TY  - CONF
AU  - Despotović, Ignjat
AU  - Lugonja, Nikoleta
AU  - Miletić, Srđan
AU  - Mašek, O.
AU  - Beškoski, Vladimir
AU  - Jovančićević, Branimir
AU  - Gajica, Gordana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6232
AB  - Cilj ispitivanja bio je da se uporedi efikasnost uklanjanja sirove nafte iz kontaminirane vodene sredine nakon mesec dana upotrebom biougljeva, biougljeva sa imobilizovanim mikrobnim ćelijama i samih mikrobnih ćelija.
PB  - Srpsko hemijsko društvo
C3  - Knjiga uzvoda - 9. Simpozijum Hemija i Zaštita Životne Sredine - EnviroChem2023, 4-7. jun 2023, Kladovo / Book of abstracts - 9 th Symposium Chemistry and Environmental Protection - EnviroChem2023, 4-7 th June 2023, Kladovo, Serbia
T1  - Uklanjanje sirove nafte iz vodene sredine – poređenje efikasnosti biougljeva i mikrobnih ćelija
T1  - Removal of crude oil from water environment – comparison between biochars  and microbial cells
SP  - 131
EP  - 132
UR  - https://hdl.handle.net/21.15107/rcub_cer_6232
ER  - 

@conference{
author = "Despotović, Ignjat and Lugonja, Nikoleta and Miletić, Srđan and Mašek, O. and Beškoski, Vladimir and Jovančićević, Branimir and Gajica, Gordana",
year = "2023",
abstract = "Cilj ispitivanja bio je da se uporedi efikasnost uklanjanja sirove nafte iz kontaminirane vodene sredine nakon mesec dana upotrebom biougljeva, biougljeva sa imobilizovanim mikrobnim ćelijama i samih mikrobnih ćelija.",
publisher = "Srpsko hemijsko društvo",
journal = "Knjiga uzvoda - 9. Simpozijum Hemija i Zaštita Životne Sredine - EnviroChem2023, 4-7. jun 2023, Kladovo / Book of abstracts - 9 th Symposium Chemistry and Environmental Protection - EnviroChem2023, 4-7 th June 2023, Kladovo, Serbia",
title = "Uklanjanje sirove nafte iz vodene sredine – poređenje efikasnosti biougljeva i mikrobnih ćelija, Removal of crude oil from water environment – comparison between biochars  and microbial cells",
pages = "131-132",
url = "https://hdl.handle.net/21.15107/rcub_cer_6232"
}

Despotović, I., Lugonja, N., Miletić, S., Mašek, O., Beškoski, V., Jovančićević, B.,& Gajica, G.. (2023). Uklanjanje sirove nafte iz vodene sredine – poređenje efikasnosti biougljeva i mikrobnih ćelija. in Knjiga uzvoda - 9. Simpozijum Hemija i Zaštita Životne Sredine - EnviroChem2023, 4-7. jun 2023, Kladovo / Book of abstracts - 9 th Symposium Chemistry and Environmental Protection - EnviroChem2023, 4-7 th June 2023, Kladovo, Serbia
Srpsko hemijsko društvo., 131-132.
https://hdl.handle.net/21.15107/rcub_cer_6232

Despotović I, Lugonja N, Miletić S, Mašek O, Beškoski V, Jovančićević B, Gajica G. Uklanjanje sirove nafte iz vodene sredine – poređenje efikasnosti biougljeva i mikrobnih ćelija. in Knjiga uzvoda - 9. Simpozijum Hemija i Zaštita Životne Sredine - EnviroChem2023, 4-7. jun 2023, Kladovo / Book of abstracts - 9 th Symposium Chemistry and Environmental Protection - EnviroChem2023, 4-7 th June 2023, Kladovo, Serbia. 2023;:131-132.
https://hdl.handle.net/21.15107/rcub_cer_6232 .

Despotović, Ignjat, Lugonja, Nikoleta, Miletić, Srđan, Mašek, O., Beškoski, Vladimir, Jovančićević, Branimir, Gajica, Gordana, "Uklanjanje sirove nafte iz vodene sredine – poređenje efikasnosti biougljeva i mikrobnih ćelija" in Knjiga uzvoda - 9. Simpozijum Hemija i Zaštita Životne Sredine - EnviroChem2023, 4-7. jun 2023, Kladovo / Book of abstracts - 9 th Symposium Chemistry and Environmental Protection - EnviroChem2023, 4-7 th June 2023, Kladovo, Serbia (2023):131-132,
https://hdl.handle.net/21.15107/rcub_cer_6232 .

TY  - CONF
AU  - Despotović, Ignjat
AU  - Lugonja, Nikoleta
AU  - Mašek, O.
AU  - Miletić, Srđan
AU  - Beškoski, Vladimir
AU  - Jovančićević, Branimir
AU  - Gajica, Gordana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7129
AB  - As biochar is a product of pyrolysis of organic waste, which can originate from various sources, in 
this study, the adsorptive capacity was examined for biochars obtained from rice husks (RH), mixed 
softwood pellets (SWP), sewage sludge pellets (SS), oil seed rape straw (OSR), miscanthus straw 
pellet (MSP) and wheat straw pellets (WSP), at two pyrolysis temperatures (550 and 700 ℃).
PB  - Chemical Society of Montenegro
C3  - Book of Abstracts - 23rd European Meeting on Environmental Chemistry (EMEC 23), 3-6 December, 2023, Budva, Montenegro
T1  - Determination of The Adsorptive Capacity of Biochars for Bioremediation of Petroleum-Type Pollutants
SP  - 61
EP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_cer_7129
ER  - 

@conference{
author = "Despotović, Ignjat and Lugonja, Nikoleta and Mašek, O. and Miletić, Srđan and Beškoski, Vladimir and Jovančićević, Branimir and Gajica, Gordana",
year = "2023",
abstract = "As biochar is a product of pyrolysis of organic waste, which can originate from various sources, in 
this study, the adsorptive capacity was examined for biochars obtained from rice husks (RH), mixed 
softwood pellets (SWP), sewage sludge pellets (SS), oil seed rape straw (OSR), miscanthus straw 
pellet (MSP) and wheat straw pellets (WSP), at two pyrolysis temperatures (550 and 700 ℃).",
publisher = "Chemical Society of Montenegro",
journal = "Book of Abstracts - 23rd European Meeting on Environmental Chemistry (EMEC 23), 3-6 December, 2023, Budva, Montenegro",
title = "Determination of The Adsorptive Capacity of Biochars for Bioremediation of Petroleum-Type Pollutants",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_cer_7129"
}

Despotović, I., Lugonja, N., Mašek, O., Miletić, S., Beškoski, V., Jovančićević, B.,& Gajica, G.. (2023). Determination of The Adsorptive Capacity of Biochars for Bioremediation of Petroleum-Type Pollutants. in Book of Abstracts - 23rd European Meeting on Environmental Chemistry (EMEC 23), 3-6 December, 2023, Budva, Montenegro
Chemical Society of Montenegro., 61-61.
https://hdl.handle.net/21.15107/rcub_cer_7129

Despotović I, Lugonja N, Mašek O, Miletić S, Beškoski V, Jovančićević B, Gajica G. Determination of The Adsorptive Capacity of Biochars for Bioremediation of Petroleum-Type Pollutants. in Book of Abstracts - 23rd European Meeting on Environmental Chemistry (EMEC 23), 3-6 December, 2023, Budva, Montenegro. 2023;:61-61.
https://hdl.handle.net/21.15107/rcub_cer_7129 .

Despotović, Ignjat, Lugonja, Nikoleta, Mašek, O., Miletić, Srđan, Beškoski, Vladimir, Jovančićević, Branimir, Gajica, Gordana, "Determination of The Adsorptive Capacity of Biochars for Bioremediation of Petroleum-Type Pollutants" in Book of Abstracts - 23rd European Meeting on Environmental Chemistry (EMEC 23), 3-6 December, 2023, Budva, Montenegro (2023):61-61,
https://hdl.handle.net/21.15107/rcub_cer_7129 .

TY  - JOUR
AU  - Štrbac, Snežana
AU  - Veselinović, Gorica
AU  - Antić, Nevena
AU  - Mijatović, Nevenka
AU  - Stojadinović, Sanja
AU  - Jovančićević, Branimir
AU  - Kašanin-Grubin, Milica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6179
AB  - The main objective of this study was to analyze the capacity of Cedrus atlantica (Endl.) Manetti ex Carrière 1855 to accumulate macro- and microelements in order to assess the environmental status. The element concentrations were measured using X-ray Fluorescence (XRF) analysis. The obtained pH values in this study show that the urban soils are neutral to slightly alkaline with low OM content. Macroelements with the highest mean concentrations in soil are Si, Al, Fe, K, Mg, and Ca. The ratio > 2 was determined for mean concentrations of Ca in the soil and Mg in needles from the Zvezdara forest, and for mean concentrations of Cl, Ti, and Fe in needles from the Byford’s forest in relation to the reference site. The accumulation pattern of the macroelements based on the Biological Concentration Factor (BCF) values > 1 for needles is for P, S, Cl, and Ca. Microelements with the highest mean values in soil are Ba, Zr, Ce, Cr, Zn, Rb, Sr, V, and La. Microelements with the highest mean values in Atlas cedar needles are Ce, La, Ba, and Cs. The ratio > 2 was determined for Cr and V concentrations in the needles from the Byford’s and Zvezdara forests and for Cu concentrations in needles from the Byford’s forest in relation to the reference site. The accumulation pattern of the microelements based on the BCF for needles is higher for I, Cs, Mo, Ag, Cd, In, Sn, Sb, and Tl. Since differences in the concentrations of macro- and microelements in the urban areas and the reference site can be identified C. atlantica can be recommended for assessing the environmental status.
PB  - Springer
T2  - Trees
T1  - The macro- and microelements content in Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae) needles as an indicator for assessing the environmental status
DO  - 10.1007/s00468-023-02401-9
ER  - 

@article{
author = "Štrbac, Snežana and Veselinović, Gorica and Antić, Nevena and Mijatović, Nevenka and Stojadinović, Sanja and Jovančićević, Branimir and Kašanin-Grubin, Milica",
year = "2023",
abstract = "The main objective of this study was to analyze the capacity of Cedrus atlantica (Endl.) Manetti ex Carrière 1855 to accumulate macro- and microelements in order to assess the environmental status. The element concentrations were measured using X-ray Fluorescence (XRF) analysis. The obtained pH values in this study show that the urban soils are neutral to slightly alkaline with low OM content. Macroelements with the highest mean concentrations in soil are Si, Al, Fe, K, Mg, and Ca. The ratio > 2 was determined for mean concentrations of Ca in the soil and Mg in needles from the Zvezdara forest, and for mean concentrations of Cl, Ti, and Fe in needles from the Byford’s forest in relation to the reference site. The accumulation pattern of the macroelements based on the Biological Concentration Factor (BCF) values > 1 for needles is for P, S, Cl, and Ca. Microelements with the highest mean values in soil are Ba, Zr, Ce, Cr, Zn, Rb, Sr, V, and La. Microelements with the highest mean values in Atlas cedar needles are Ce, La, Ba, and Cs. The ratio > 2 was determined for Cr and V concentrations in the needles from the Byford’s and Zvezdara forests and for Cu concentrations in needles from the Byford’s forest in relation to the reference site. The accumulation pattern of the microelements based on the BCF for needles is higher for I, Cs, Mo, Ag, Cd, In, Sn, Sb, and Tl. Since differences in the concentrations of macro- and microelements in the urban areas and the reference site can be identified C. atlantica can be recommended for assessing the environmental status.",
publisher = "Springer",
journal = "Trees",
title = "The macro- and microelements content in Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae) needles as an indicator for assessing the environmental status",
doi = "10.1007/s00468-023-02401-9"
}

Štrbac, S., Veselinović, G., Antić, N., Mijatović, N., Stojadinović, S., Jovančićević, B.,& Kašanin-Grubin, M.. (2023). The macro- and microelements content in Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae) needles as an indicator for assessing the environmental status. in Trees
Springer..
https://doi.org/10.1007/s00468-023-02401-9

Štrbac S, Veselinović G, Antić N, Mijatović N, Stojadinović S, Jovančićević B, Kašanin-Grubin M. The macro- and microelements content in Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae) needles as an indicator for assessing the environmental status. in Trees. 2023;.
doi:10.1007/s00468-023-02401-9 .

Štrbac, Snežana, Veselinović, Gorica, Antić, Nevena, Mijatović, Nevenka, Stojadinović, Sanja, Jovančićević, Branimir, Kašanin-Grubin, Milica, "The macro- and microelements content in Cedrus atlantica (Endl.) Manetti ex Carrière (Pinaceae) needles as an indicator for assessing the environmental status" in Trees (2023),
https://doi.org/10.1007/s00468-023-02401-9 . .

TY  - JOUR
AU  - Šajnović, Aleksandra
AU  - Burazer, Nikola
AU  - Veselinović, Gorica
AU  - Stojadinović, Sanja
AU  - Gajica, G.
AU  - Trebše, P.
AU  - Glavaš, N.
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7177
AB  - In Sečovlje Salina Nature Park, the therapeutic mud matured in the natural sedimentary environmental site. This work aimed to determine the influence of the peloid maturation process on the hydrocarbon and elemental distributions, as well as changes in morphology. For this purpose, the sample before and after maturation was examined using various methods. n-Alkanes were the most abundant among saturated hydrocarbons in both immature and mature peloid samples. The results showed that the maturation mainly influenced the change in distribution and concentration (from 378 to 1958 ppm) of n-alkanes. The organic matter (OM) of the immature peloid sample was characterized by a slight prevalence of long-chain and odd carbon-numbered n-alkanes, maximizing at n-C27. However, mature peloid's OM showed a similar share of short-, mid- and long-chain n-alkanes with a slight dominance of short-chain members, maximizing at n-C16. The origin of short-chain and even carbon-numbered n-alkanes was attributed to microbial precursors (e.g., Leptolyngbyaceae). Hopanes were considerably more dominant compared to steranes in both peloids. The hopane series of immature peloid was characterized by the dominance of 22,29,30-trinor-hop-5(6)-ene (C27 hopene), as well as the presence of C30-hop-22(29)-ene (diploptene), which are widespread in cyanobacterial species. The aromatic fraction of immature peloid pointed to the predominance of polycyclic aromatic hydrocarbons (PAHs). As peloid aging progressed, the sample was richer in methyl-branched alkanes, carboxylic acids, their methyl esters, and thermodynamically more stable hopanes and steranes. The presence of elements with toxicological relevance during maturation was reduced below the limits prescribed in most of the directives for cosmetic products. It specifically refers to: As, Ni and Se. A higher concentration of total sulfur in the mature peloid can be related to gypsum precipitation in the summer and/or more intensive microbial activity.
PB  - Elsevier
T2  - Science of The Total Environment
T1  - Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)
VL  - 897
SP  - 165424
DO  - 10.1016/j.scitotenv.2023.165424
ER  - 

@article{
author = "Šajnović, Aleksandra and Burazer, Nikola and Veselinović, Gorica and Stojadinović, Sanja and Gajica, G. and Trebše, P. and Glavaš, N. and Jovančićević, Branimir",
year = "2023",
abstract = "In Sečovlje Salina Nature Park, the therapeutic mud matured in the natural sedimentary environmental site. This work aimed to determine the influence of the peloid maturation process on the hydrocarbon and elemental distributions, as well as changes in morphology. For this purpose, the sample before and after maturation was examined using various methods. n-Alkanes were the most abundant among saturated hydrocarbons in both immature and mature peloid samples. The results showed that the maturation mainly influenced the change in distribution and concentration (from 378 to 1958 ppm) of n-alkanes. The organic matter (OM) of the immature peloid sample was characterized by a slight prevalence of long-chain and odd carbon-numbered n-alkanes, maximizing at n-C27. However, mature peloid's OM showed a similar share of short-, mid- and long-chain n-alkanes with a slight dominance of short-chain members, maximizing at n-C16. The origin of short-chain and even carbon-numbered n-alkanes was attributed to microbial precursors (e.g., Leptolyngbyaceae). Hopanes were considerably more dominant compared to steranes in both peloids. The hopane series of immature peloid was characterized by the dominance of 22,29,30-trinor-hop-5(6)-ene (C27 hopene), as well as the presence of C30-hop-22(29)-ene (diploptene), which are widespread in cyanobacterial species. The aromatic fraction of immature peloid pointed to the predominance of polycyclic aromatic hydrocarbons (PAHs). As peloid aging progressed, the sample was richer in methyl-branched alkanes, carboxylic acids, their methyl esters, and thermodynamically more stable hopanes and steranes. The presence of elements with toxicological relevance during maturation was reduced below the limits prescribed in most of the directives for cosmetic products. It specifically refers to: As, Ni and Se. A higher concentration of total sulfur in the mature peloid can be related to gypsum precipitation in the summer and/or more intensive microbial activity.",
publisher = "Elsevier",
journal = "Science of The Total Environment",
title = "Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)",
volume = "897",
pages = "165424",
doi = "10.1016/j.scitotenv.2023.165424"
}

Šajnović, A., Burazer, N., Veselinović, G., Stojadinović, S., Gajica, G., Trebše, P., Glavaš, N.,& Jovančićević, B.. (2023). Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia). in Science of The Total Environment
Elsevier., 897, 165424.
https://doi.org/10.1016/j.scitotenv.2023.165424

Šajnović A, Burazer N, Veselinović G, Stojadinović S, Gajica G, Trebše P, Glavaš N, Jovančićević B. Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia). in Science of The Total Environment. 2023;897:165424.
doi:10.1016/j.scitotenv.2023.165424 .

Šajnović, Aleksandra, Burazer, Nikola, Veselinović, Gorica, Stojadinović, Sanja, Gajica, G., Trebše, P., Glavaš, N., Jovančićević, Branimir, "Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)" in Science of The Total Environment, 897 (2023):165424,
https://doi.org/10.1016/j.scitotenv.2023.165424 . .

TY  - CONF
AU  - Antić, Nevena
AU  - Kašanin-Grubin, Milica
AU  - Bertalan, Laszlo
AU  - Gajić, Violeta
AU  - Kaluđerović, Lazar
AU  - Mijatović, Nevenka
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7106
AB  - Eight sediments samples, four from Đavolja varoš and four from Kazár badland have been compared from the perspective of mineralogical composition, petrographic characterization, particle size 
distribution, pH, electrical conductivity (EC), and the sodium adsorption ratio (SAR).
PB  - Chemical Society of Montenegro
C3  - 23rd European Meeting on Environmental Chemistry, EMEC23, Book of abstracts, December 3rd - December 6th, 2023, Budva, Montenegro
T1  - How bad volcano-clastic badlands actually are?
SP  - 22
EP  - 22
UR  - https://hdl.handle.net/21.15107/rcub_cer_7106
ER  - 

@conference{
author = "Antić, Nevena and Kašanin-Grubin, Milica and Bertalan, Laszlo and Gajić, Violeta and Kaluđerović, Lazar and Mijatović, Nevenka and Jovančićević, Branimir",
year = "2023",
abstract = "Eight sediments samples, four from Đavolja varoš and four from Kazár badland have been compared from the perspective of mineralogical composition, petrographic characterization, particle size 
distribution, pH, electrical conductivity (EC), and the sodium adsorption ratio (SAR).",
publisher = "Chemical Society of Montenegro",
journal = "23rd European Meeting on Environmental Chemistry, EMEC23, Book of abstracts, December 3rd - December 6th, 2023, Budva, Montenegro",
title = "How bad volcano-clastic badlands actually are?",
pages = "22-22",
url = "https://hdl.handle.net/21.15107/rcub_cer_7106"
}

Antić, N., Kašanin-Grubin, M., Bertalan, L., Gajić, V., Kaluđerović, L., Mijatović, N.,& Jovančićević, B.. (2023). How bad volcano-clastic badlands actually are?. in 23rd European Meeting on Environmental Chemistry, EMEC23, Book of abstracts, December 3rd - December 6th, 2023, Budva, Montenegro
Chemical Society of Montenegro., 22-22.
https://hdl.handle.net/21.15107/rcub_cer_7106

Antić N, Kašanin-Grubin M, Bertalan L, Gajić V, Kaluđerović L, Mijatović N, Jovančićević B. How bad volcano-clastic badlands actually are?. in 23rd European Meeting on Environmental Chemistry, EMEC23, Book of abstracts, December 3rd - December 6th, 2023, Budva, Montenegro. 2023;:22-22.
https://hdl.handle.net/21.15107/rcub_cer_7106 .

Antić, Nevena, Kašanin-Grubin, Milica, Bertalan, Laszlo, Gajić, Violeta, Kaluđerović, Lazar, Mijatović, Nevenka, Jovančićević, Branimir, "How bad volcano-clastic badlands actually are?" in 23rd European Meeting on Environmental Chemistry, EMEC23, Book of abstracts, December 3rd - December 6th, 2023, Budva, Montenegro (2023):22-22,
https://hdl.handle.net/21.15107/rcub_cer_7106 .

TY  - CONF
AU  - Antić, Nevena
AU  - Kašanin-Grubin, Milica
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7103
AB  - Forty-seven sediment samples from four lacustrine basins were analyzed in order to determine and compare the dispersity of sediments. Twelve were sampled from the Valjevo-mionica basin were more than a half are carbonate sediments, while the rest are marls; thirteen carbonate and marl sediment samples were taken from the Lopare basin; eight samples from Aleksinac basin are marls and oil shales, while fourteen samples from Toplica basin are mainly sandstone, clay and tuffs and marls in smaller portions. Electrical conductivity (EC), pH and elemental composition were measured, while dispersivity index sodium-adsorption ratio (SAR) was calculated from the concentration of cations.
PB  - Haifa, Israel : University of Haifa
C3  - Book of abstracts - 3rd-DENUCHANGE Working Group Workshop, 13-16/3 2023, Haifa, Israel
T1  - Dispersion of the sediment caused by the land use
SP  - 4
EP  - 4
UR  - https://hdl.handle.net/21.15107/rcub_cer_7103
ER  - 

@conference{
author = "Antić, Nevena and Kašanin-Grubin, Milica and Jovančićević, Branimir",
year = "2023",
abstract = "Forty-seven sediment samples from four lacustrine basins were analyzed in order to determine and compare the dispersity of sediments. Twelve were sampled from the Valjevo-mionica basin were more than a half are carbonate sediments, while the rest are marls; thirteen carbonate and marl sediment samples were taken from the Lopare basin; eight samples from Aleksinac basin are marls and oil shales, while fourteen samples from Toplica basin are mainly sandstone, clay and tuffs and marls in smaller portions. Electrical conductivity (EC), pH and elemental composition were measured, while dispersivity index sodium-adsorption ratio (SAR) was calculated from the concentration of cations.",
publisher = "Haifa, Israel : University of Haifa",
journal = "Book of abstracts - 3rd-DENUCHANGE Working Group Workshop, 13-16/3 2023, Haifa, Israel",
title = "Dispersion of the sediment caused by the land use",
pages = "4-4",
url = "https://hdl.handle.net/21.15107/rcub_cer_7103"
}

Antić, N., Kašanin-Grubin, M.,& Jovančićević, B.. (2023). Dispersion of the sediment caused by the land use. in Book of abstracts - 3rd-DENUCHANGE Working Group Workshop, 13-16/3 2023, Haifa, Israel
Haifa, Israel : University of Haifa., 4-4.
https://hdl.handle.net/21.15107/rcub_cer_7103

Antić N, Kašanin-Grubin M, Jovančićević B. Dispersion of the sediment caused by the land use. in Book of abstracts - 3rd-DENUCHANGE Working Group Workshop, 13-16/3 2023, Haifa, Israel. 2023;:4-4.
https://hdl.handle.net/21.15107/rcub_cer_7103 .

Antić, Nevena, Kašanin-Grubin, Milica, Jovančićević, Branimir, "Dispersion of the sediment caused by the land use" in Book of abstracts - 3rd-DENUCHANGE Working Group Workshop, 13-16/3 2023, Haifa, Israel (2023):4-4,
https://hdl.handle.net/21.15107/rcub_cer_7103 .

TY  - JOUR
AU  - Stefanović, Milica
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Vergari, Francesca
AU  - Troiani, Francesco
AU  - Moreno-de-las-Heras, Mariano
AU  - Gallart, Francesc
AU  - Desloges, Joseph
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7182
AB  - The aim of this study is to investigate the influence of weathering processes on the distribution of n-alkanes in unweathered and weathered samples of badland material. Organic matter (OM) of both the weathered and unweathered zones in badland environments is derived from the same sources such any differences between the n-alkane pattern of the two zones can be attributed to the impact of weathering processes under different climate conditions. Organic geochemical and mineralogical characterizations were employed to investigate twenty-one samples from weathered badland environments in Italy, Spain, and Canada that originally derive from marine, distal alluvial, and fluvial depositional settings, respectively. According to the distribution of n-alkanes and diterpanes, unweathered samples from Italy have an original mixed aquatic-terrestrial origin of OM, with a variable (low to moderate) contribution of terrestrial plants as precursors, while unweathered samples from Spain predominantly contain OM originating from submerged/floating macrophytes deposited under reducing conditions. Unweathered samples from Canada predominantly consist of terrigenous OM. Intensity of changes in n-alkanes distribution when subjected to weathering depends on the type of precursor biomass and quantity of smectite. Predominantly terrigenous OM under semi-arid conditions shows the highest affinity for adsorption is in contact with smectite surfaces. Mid- and long-chain odd n-alkanes have a tendency to build colloidal particles with polar organic compounds such as fatty acids by strong binding and thus their preservation from degradation is possible.
PB  - Elsevier
T2  - CATENA
T1  - Impact of weathering processes on n-alkane pattern in badlands
VL  - 231
SP  - 107352
DO  - 10.1016/j.catena.2023.107352
ER  - 

@article{
author = "Stefanović, Milica and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Vergari, Francesca and Troiani, Francesco and Moreno-de-las-Heras, Mariano and Gallart, Francesc and Desloges, Joseph and Jovančićević, Branimir",
year = "2023",
abstract = "The aim of this study is to investigate the influence of weathering processes on the distribution of n-alkanes in unweathered and weathered samples of badland material. Organic matter (OM) of both the weathered and unweathered zones in badland environments is derived from the same sources such any differences between the n-alkane pattern of the two zones can be attributed to the impact of weathering processes under different climate conditions. Organic geochemical and mineralogical characterizations were employed to investigate twenty-one samples from weathered badland environments in Italy, Spain, and Canada that originally derive from marine, distal alluvial, and fluvial depositional settings, respectively. According to the distribution of n-alkanes and diterpanes, unweathered samples from Italy have an original mixed aquatic-terrestrial origin of OM, with a variable (low to moderate) contribution of terrestrial plants as precursors, while unweathered samples from Spain predominantly contain OM originating from submerged/floating macrophytes deposited under reducing conditions. Unweathered samples from Canada predominantly consist of terrigenous OM. Intensity of changes in n-alkanes distribution when subjected to weathering depends on the type of precursor biomass and quantity of smectite. Predominantly terrigenous OM under semi-arid conditions shows the highest affinity for adsorption is in contact with smectite surfaces. Mid- and long-chain odd n-alkanes have a tendency to build colloidal particles with polar organic compounds such as fatty acids by strong binding and thus their preservation from degradation is possible.",
publisher = "Elsevier",
journal = "CATENA",
title = "Impact of weathering processes on n-alkane pattern in badlands",
volume = "231",
pages = "107352",
doi = "10.1016/j.catena.2023.107352"
}

Stefanović, M., Šajnović, A., Kašanin-Grubin, M., Vergari, F., Troiani, F., Moreno-de-las-Heras, M., Gallart, F., Desloges, J.,& Jovančićević, B.. (2023). Impact of weathering processes on n-alkane pattern in badlands. in CATENA
Elsevier., 231, 107352.
https://doi.org/10.1016/j.catena.2023.107352

Stefanović M, Šajnović A, Kašanin-Grubin M, Vergari F, Troiani F, Moreno-de-las-Heras M, Gallart F, Desloges J, Jovančićević B. Impact of weathering processes on n-alkane pattern in badlands. in CATENA. 2023;231:107352.
doi:10.1016/j.catena.2023.107352 .

Stefanović, Milica, Šajnović, Aleksandra, Kašanin-Grubin, Milica, Vergari, Francesca, Troiani, Francesco, Moreno-de-las-Heras, Mariano, Gallart, Francesc, Desloges, Joseph, Jovančićević, Branimir, "Impact of weathering processes on n-alkane pattern in badlands" in CATENA, 231 (2023):107352,
https://doi.org/10.1016/j.catena.2023.107352 . .

TY  - JOUR
AU  - Antić, Nevena
AU  - Kašanin-Grubin, Milica
AU  - Štrbac, Snežana
AU  - Xie, Chunxia
AU  - Mijatović, Nevenka
AU  - Tosti, Tomislav
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6252
AB  - A diversity of factors, led by lithology, weathering, and erosion processes, plays a significant role in the formation and future of badland terrains. Then on previous observations it can be concluded that surface flow processes are the first trigger of erosion and that intense soil erosion combined with rapid and deep weathering are tightly connected to high erosion rates.
Since climate change presents a global issue that gains increasing attention and due to the complexity of the interactions and processes that are a part of general badlands origin and evolution, a weathering experiment on badland sediments from China was conducted. Explaining temporal changes, the impact of different precipitation types and its durations of exposure on sediments during weathering processes, as well as its impact on leachate ions behaviour are the aims behind this experiment.
Red clayey siltstone and mudstone badland sediments selected for the laboratory experiment were organized in four sets that included three different samples, making a total of 12 treated samples. Based on field climate data, in laboratory conditions samples were exposed to rain, acid rain, snow, and acid snow through fifteen daily cycles. Leachate was collected after each cycle and its volume, pH, electrical conductivity (EC), and ion concentrations were measured and analysed from the leachate. Changes occurring on the surface of the sample were observed through photographs taken at the end of each cycle.
Based on obtained results it can be said that the main differences occur when comparing rain and snow treatments generally. Temporal, cyclic changes were, to a certain extent, noticed through sediment decay. More importantly, durations of sediment exposure to precipitation proved to be crucial for weathering processes of tested siltstones and mudstones, having exclusion and ionic forces - ion exchange chromatography as dominant chemical processes.
PB  - Elsevier
T2  - CATENA
T1  - Type of precipitation and durations of sediment exposure as important weathering factors
VL  - 228
SP  - 107192
DO  - 10.1016/j.catena.2023.107192
ER  - 

@article{
author = "Antić, Nevena and Kašanin-Grubin, Milica and Štrbac, Snežana and Xie, Chunxia and Mijatović, Nevenka and Tosti, Tomislav and Jovančićević, Branimir",
year = "2023",
abstract = "A diversity of factors, led by lithology, weathering, and erosion processes, plays a significant role in the formation and future of badland terrains. Then on previous observations it can be concluded that surface flow processes are the first trigger of erosion and that intense soil erosion combined with rapid and deep weathering are tightly connected to high erosion rates.
Since climate change presents a global issue that gains increasing attention and due to the complexity of the interactions and processes that are a part of general badlands origin and evolution, a weathering experiment on badland sediments from China was conducted. Explaining temporal changes, the impact of different precipitation types and its durations of exposure on sediments during weathering processes, as well as its impact on leachate ions behaviour are the aims behind this experiment.
Red clayey siltstone and mudstone badland sediments selected for the laboratory experiment were organized in four sets that included three different samples, making a total of 12 treated samples. Based on field climate data, in laboratory conditions samples were exposed to rain, acid rain, snow, and acid snow through fifteen daily cycles. Leachate was collected after each cycle and its volume, pH, electrical conductivity (EC), and ion concentrations were measured and analysed from the leachate. Changes occurring on the surface of the sample were observed through photographs taken at the end of each cycle.
Based on obtained results it can be said that the main differences occur when comparing rain and snow treatments generally. Temporal, cyclic changes were, to a certain extent, noticed through sediment decay. More importantly, durations of sediment exposure to precipitation proved to be crucial for weathering processes of tested siltstones and mudstones, having exclusion and ionic forces - ion exchange chromatography as dominant chemical processes.",
publisher = "Elsevier",
journal = "CATENA",
title = "Type of precipitation and durations of sediment exposure as important weathering factors",
volume = "228",
pages = "107192",
doi = "10.1016/j.catena.2023.107192"
}

Antić, N., Kašanin-Grubin, M., Štrbac, S., Xie, C., Mijatović, N., Tosti, T.,& Jovančićević, B.. (2023). Type of precipitation and durations of sediment exposure as important weathering factors. in CATENA
Elsevier., 228, 107192.
https://doi.org/10.1016/j.catena.2023.107192

Antić N, Kašanin-Grubin M, Štrbac S, Xie C, Mijatović N, Tosti T, Jovančićević B. Type of precipitation and durations of sediment exposure as important weathering factors. in CATENA. 2023;228:107192.
doi:10.1016/j.catena.2023.107192 .

Antić, Nevena, Kašanin-Grubin, Milica, Štrbac, Snežana, Xie, Chunxia, Mijatović, Nevenka, Tosti, Tomislav, Jovančićević, Branimir, "Type of precipitation and durations of sediment exposure as important weathering factors" in CATENA, 228 (2023):107192,
https://doi.org/10.1016/j.catena.2023.107192 . .

TY  - JOUR
AU  - Spahić, Darko
AU  - Šajnović, Aleksandra
AU  - Burazer, Nikola
AU  - Radisavljević, Marija
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6681
AB  - With the objective to quantify the Neogene extensional geodynamic drivers of the Peri Pannonian Realm s.l., a series of 1D basin models were carried out by integrating the available geological and geochemical data extracted from the landlocked Toplica Basin (central-southern Serbia; Serbo-Macedonian Unit). The modeling was conducted on four wells located immediately south of Jastrebac Mt., in the area of the Toplica Basin. The investigated southernmost point of the Peri Pannonian Ream s.l. (areas surrounding the basin, to the south of rivers Danube and Sava) underwent intense tectonically-driven subsidence episodes, which lasted from the Lower Miocene up to the Pliocene. The restored Neogene burial history (subsidence rates), paleotemperature, and calibrated paleo-heat fluxes (or changes in the ancient crustal or basal heat flow) indicated a two-staged crustal stretching of the wider Toplica area. The combined tectonic, i.e., thermal subsidence, resulted in a very high sedimentation rate, having an average ca. 300–400 m/Ma (Čučale unit). The intense tectonically-driven subsidence is consistent with the involvement of extensional processes, affecting the crustal and lithospheric layers of the retreating Adria/Dinarides, amplified by a distant Carpathian rollback stage. The regional extension led to the asymmetric opening and the formation of the Toplica Lower Miocene mesosaline to the freshwater lacustrine system. Higher participation of mixed microbiologically reworked/terrestrial organic matter incorporated in oil-prone Type II kerogen mainly characterized the investigated lacustrine sedimentary sequence. The latest Oligocene–earliest Neogene subsidence onset was characterized by elevated temperatures, affecting the early development of the oil window (ca. at 16 Ma). The 1D models also showed that the Lower Čučale unit achieved ca. 50% transformation ratio for the Type II organic matter. The two intra-Neogene extensional episodes suggested the existence of the Early Neogene “syn-rift” stage, followed by a thermal sagging. The Neogene continuous thinning of the overriding Serbo-Macedonian continental crust contributed to the “negative inversion” of the former pre-Neogene nappes. Therefore, Neogene tectonic reactivation induced contemporaneous subsidence, further allowing the extensional rise of the Jastrebac core complex.
PB  - Elsevier BV
T2  - Geoenergy Science and Engineering
T1  - Neogene subsidence rates of the southern Peri Pannonian realm (1D basin modeling): Constraints on the extensional geodynamic drivers of the asymmetric Toplica basin (central-southern Serbia)
VL  - 226
SP  - 211714
DO  - 10.1016/j.geoen.2023.211714
ER  - 

@article{
author = "Spahić, Darko and Šajnović, Aleksandra and Burazer, Nikola and Radisavljević, Marija and Jovančićević, Branimir",
year = "2023",
abstract = "With the objective to quantify the Neogene extensional geodynamic drivers of the Peri Pannonian Realm s.l., a series of 1D basin models were carried out by integrating the available geological and geochemical data extracted from the landlocked Toplica Basin (central-southern Serbia; Serbo-Macedonian Unit). The modeling was conducted on four wells located immediately south of Jastrebac Mt., in the area of the Toplica Basin. The investigated southernmost point of the Peri Pannonian Ream s.l. (areas surrounding the basin, to the south of rivers Danube and Sava) underwent intense tectonically-driven subsidence episodes, which lasted from the Lower Miocene up to the Pliocene. The restored Neogene burial history (subsidence rates), paleotemperature, and calibrated paleo-heat fluxes (or changes in the ancient crustal or basal heat flow) indicated a two-staged crustal stretching of the wider Toplica area. The combined tectonic, i.e., thermal subsidence, resulted in a very high sedimentation rate, having an average ca. 300–400 m/Ma (Čučale unit). The intense tectonically-driven subsidence is consistent with the involvement of extensional processes, affecting the crustal and lithospheric layers of the retreating Adria/Dinarides, amplified by a distant Carpathian rollback stage. The regional extension led to the asymmetric opening and the formation of the Toplica Lower Miocene mesosaline to the freshwater lacustrine system. Higher participation of mixed microbiologically reworked/terrestrial organic matter incorporated in oil-prone Type II kerogen mainly characterized the investigated lacustrine sedimentary sequence. The latest Oligocene–earliest Neogene subsidence onset was characterized by elevated temperatures, affecting the early development of the oil window (ca. at 16 Ma). The 1D models also showed that the Lower Čučale unit achieved ca. 50% transformation ratio for the Type II organic matter. The two intra-Neogene extensional episodes suggested the existence of the Early Neogene “syn-rift” stage, followed by a thermal sagging. The Neogene continuous thinning of the overriding Serbo-Macedonian continental crust contributed to the “negative inversion” of the former pre-Neogene nappes. Therefore, Neogene tectonic reactivation induced contemporaneous subsidence, further allowing the extensional rise of the Jastrebac core complex.",
publisher = "Elsevier BV",
journal = "Geoenergy Science and Engineering",
title = "Neogene subsidence rates of the southern Peri Pannonian realm (1D basin modeling): Constraints on the extensional geodynamic drivers of the asymmetric Toplica basin (central-southern Serbia)",
volume = "226",
pages = "211714",
doi = "10.1016/j.geoen.2023.211714"
}

Spahić, D., Šajnović, A., Burazer, N., Radisavljević, M.,& Jovančićević, B.. (2023). Neogene subsidence rates of the southern Peri Pannonian realm (1D basin modeling): Constraints on the extensional geodynamic drivers of the asymmetric Toplica basin (central-southern Serbia). in Geoenergy Science and Engineering
Elsevier BV., 226, 211714.
https://doi.org/10.1016/j.geoen.2023.211714

Spahić D, Šajnović A, Burazer N, Radisavljević M, Jovančićević B. Neogene subsidence rates of the southern Peri Pannonian realm (1D basin modeling): Constraints on the extensional geodynamic drivers of the asymmetric Toplica basin (central-southern Serbia). in Geoenergy Science and Engineering. 2023;226:211714.
doi:10.1016/j.geoen.2023.211714 .

Spahić, Darko, Šajnović, Aleksandra, Burazer, Nikola, Radisavljević, Marija, Jovančićević, Branimir, "Neogene subsidence rates of the southern Peri Pannonian realm (1D basin modeling): Constraints on the extensional geodynamic drivers of the asymmetric Toplica basin (central-southern Serbia)" in Geoenergy Science and Engineering, 226 (2023):211714,
https://doi.org/10.1016/j.geoen.2023.211714 . .

TY  - JOUR
AU  - Saheed, Ramadan Musbah M.
AU  - Šolević Knudsen, Tatjana
AU  - Faraj, Musbah Abduljalil M.
AU  - Nytoft, Hans Peter
AU  - Jovančićević, Branimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5651
AB  - Crude oil samples from the Sharara-C oil field (Concession NC-115, Murzuq Basin, SW Libya) were analysed by organic geochemical methods in order to infer the geochemical characteristics of their respective source rocks. Aromatic hydrocarbons were analysed by gas chromatography – mass spectrometry (GC-MS), and gas chromatography – tandem mass spectrometry (GC-MS-MS) was used to analyse saturated biomarkers. The Sharara-C oils are interpreted to have been generated by marine shales containing mixed terrigenous and marine organic materials deposited in an intermediate (suboxic) environment. Age-specific biomarker ratios indicated that the oils are older than Cretaceous, and maturation-related parameters pointed to their high thermal maturity. Consistent with previous studies, source rocks are inferred to be “hot” shales in the Lower Silurian Tanezzuft Formation. Almost all the parameter ratios calculated varied over a very narrow range, indicating that the investigated oils were compositionally similar. The only significant difference that was noted concerned the sterane/hopane ratios whose variation suggested that there was some variability in the composition of the source organic material. The organic geochemical parameters determined for the Sharara-C crude oils were compared with published data on other crude oils from Concession NC-115. Almost all the parameters agreed well with previously published data on oils from this part of the Murzuq Basin. The greatest deviation concerned the values of some of the maturity parameters. This tended to confirm the conclusions of previous studies concerning the presence of a number of distinct oil families and sub-families in the Sharara oil field area which are genetically related but which have different maturities. © 2023 The Authors. Journal of Petroleum Geology.
PB  - John Wiley and Sons Inc
T2  - Journal of Petroleum Geology
T1  - Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya
VL  - 46
IS  - 1
SP  - 103
EP  - 123
DO  - 10.1111/jpg.12832
ER  - 

@article{
author = "Saheed, Ramadan Musbah M. and Šolević Knudsen, Tatjana and Faraj, Musbah Abduljalil M. and Nytoft, Hans Peter and Jovančićević, Branimir",
year = "2023",
abstract = "Crude oil samples from the Sharara-C oil field (Concession NC-115, Murzuq Basin, SW Libya) were analysed by organic geochemical methods in order to infer the geochemical characteristics of their respective source rocks. Aromatic hydrocarbons were analysed by gas chromatography – mass spectrometry (GC-MS), and gas chromatography – tandem mass spectrometry (GC-MS-MS) was used to analyse saturated biomarkers. The Sharara-C oils are interpreted to have been generated by marine shales containing mixed terrigenous and marine organic materials deposited in an intermediate (suboxic) environment. Age-specific biomarker ratios indicated that the oils are older than Cretaceous, and maturation-related parameters pointed to their high thermal maturity. Consistent with previous studies, source rocks are inferred to be “hot” shales in the Lower Silurian Tanezzuft Formation. Almost all the parameter ratios calculated varied over a very narrow range, indicating that the investigated oils were compositionally similar. The only significant difference that was noted concerned the sterane/hopane ratios whose variation suggested that there was some variability in the composition of the source organic material. The organic geochemical parameters determined for the Sharara-C crude oils were compared with published data on other crude oils from Concession NC-115. Almost all the parameters agreed well with previously published data on oils from this part of the Murzuq Basin. The greatest deviation concerned the values of some of the maturity parameters. This tended to confirm the conclusions of previous studies concerning the presence of a number of distinct oil families and sub-families in the Sharara oil field area which are genetically related but which have different maturities. © 2023 The Authors. Journal of Petroleum Geology.",
publisher = "John Wiley and Sons Inc",
journal = "Journal of Petroleum Geology",
title = "Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya",
volume = "46",
number = "1",
pages = "103-123",
doi = "10.1111/jpg.12832"
}

Saheed, R. M. M., Šolević Knudsen, T., Faraj, M. A. M., Nytoft, H. P.,& Jovančićević, B.. (2023). Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya. in Journal of Petroleum Geology
John Wiley and Sons Inc., 46(1), 103-123.
https://doi.org/10.1111/jpg.12832

Saheed RMM, Šolević Knudsen T, Faraj MAM, Nytoft HP, Jovančićević B. Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya. in Journal of Petroleum Geology. 2023;46(1):103-123.
doi:10.1111/jpg.12832 .

Saheed, Ramadan Musbah M., Šolević Knudsen, Tatjana, Faraj, Musbah Abduljalil M., Nytoft, Hans Peter, Jovančićević, Branimir, "Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya" in Journal of Petroleum Geology, 46, no. 1 (2023):103-123,
https://doi.org/10.1111/jpg.12832 . .

TY  - CONF
AU  - Jednak Berić, Tanja
AU  - Ilić, Mila
AU  - Avdalović, Jelena
AU  - Milić, Jelena
AU  - Jovančićević, Branimir
AU  - Vrvić, Miroslav
AU  - Miletić, Srđan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5327
AB  - The aim of this research was to investigate if a consortium of the microorganisms (CMOs) used in the process of bioremediation of soil contaminated with the sludge of the residual heavy fuel oil (SoRHFO) can change the chemical form of heavy metals from waste HDSc.
PB  - Serbian Society of Microbiology
C3  - Electronic Abstract Book - FEMS Conference on Microbiology in association with Serbian Society of Microbiology
T1  - Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations
SP  - 734
EP  - 735
UR  - https://hdl.handle.net/21.15107/rcub_cer_5327
ER  - 

@conference{
author = "Jednak Berić, Tanja and Ilić, Mila and Avdalović, Jelena and Milić, Jelena and Jovančićević, Branimir and Vrvić, Miroslav and Miletić, Srđan",
year = "2022",
abstract = "The aim of this research was to investigate if a consortium of the microorganisms (CMOs) used in the process of bioremediation of soil contaminated with the sludge of the residual heavy fuel oil (SoRHFO) can change the chemical form of heavy metals from waste HDSc.",
publisher = "Serbian Society of Microbiology",
journal = "Electronic Abstract Book - FEMS Conference on Microbiology in association with Serbian Society of Microbiology",
title = "Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations",
pages = "734-735",
url = "https://hdl.handle.net/21.15107/rcub_cer_5327"
}

Jednak Berić, T., Ilić, M., Avdalović, J., Milić, J., Jovančićević, B., Vrvić, M.,& Miletić, S.. (2022). Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations. in Electronic Abstract Book - FEMS Conference on Microbiology in association with Serbian Society of Microbiology
Serbian Society of Microbiology., 734-735.
https://hdl.handle.net/21.15107/rcub_cer_5327

Jednak Berić T, Ilić M, Avdalović J, Milić J, Jovančićević B, Vrvić M, Miletić S. Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations. in Electronic Abstract Book - FEMS Conference on Microbiology in association with Serbian Society of Microbiology. 2022;:734-735.
https://hdl.handle.net/21.15107/rcub_cer_5327 .

Jednak Berić, Tanja, Ilić, Mila, Avdalović, Jelena, Milić, Jelena, Jovančićević, Branimir, Vrvić, Miroslav, Miletić, Srđan, "Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations" in Electronic Abstract Book - FEMS Conference on Microbiology in association with Serbian Society of Microbiology (2022):734-735,
https://hdl.handle.net/21.15107/rcub_cer_5327 .

TY  - CONF
AU  - Jednak Berić, Tanja
AU  - Ilić, Mila
AU  - Avdalović, Jelena
AU  - Milić, Jelena
AU  - Jovančićević, Branimir
AU  - Vrvić, Miroslav
AU  - Miletić, Srđan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5328
AB  - Poster presented at: FEMS Conference on Microbiology in association with Serbian Society of Microbiology, 30/06/2022-02/07/2022
T1  - Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations
UR  - https://hdl.handle.net/21.15107/rcub_cer_5328
ER  - 

@conference{
author = "Jednak Berić, Tanja and Ilić, Mila and Avdalović, Jelena and Milić, Jelena and Jovančićević, Branimir and Vrvić, Miroslav and Miletić, Srđan",
year = "2022",
abstract = "Poster presented at: FEMS Conference on Microbiology in association with Serbian Society of Microbiology, 30/06/2022-02/07/2022",
title = "Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations",
url = "https://hdl.handle.net/21.15107/rcub_cer_5328"
}

Jednak Berić, T., Ilić, M., Avdalović, J., Milić, J., Jovančićević, B., Vrvić, M.,& Miletić, S.. (2022). Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations. .
https://hdl.handle.net/21.15107/rcub_cer_5328

Jednak Berić T, Ilić M, Avdalović J, Milić J, Jovančićević B, Vrvić M, Miletić S. Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_5328 .

Jednak Berić, Tanja, Ilić, Mila, Avdalović, Jelena, Milić, Jelena, Jovančićević, Branimir, Vrvić, Miroslav, Miletić, Srđan, "Microbiological degradation and transformation of complex refinery waste caused by violent destruction of installations" (2022),
https://hdl.handle.net/21.15107/rcub_cer_5328 .

TY  - JOUR
AU  - Stojadinović, Sanja
AU  - Šajnović, Aleksandra
AU  - Kašanin-Grubin, Milica
AU  - Gajica, Gordana
AU  - Veselinović, Gorica
AU  - Štrbac, Snežana
AU  - Jovančićević, Branimir
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5023
AB  - Purpose
The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of Belgrade at the Sava and Danube River’s confluence. The position of GWI causes a large number of possible hydrocarbons inputs that influence the quality of both river waters and sediments. The main objective of this research is to assess the distribution and source of hydrocarbons in sediments deposited at the GWI depending on the river’s flow regimes and depositional environment.

Material and methods
Sediment samples were collected from 16 sites (11 sites along the GWI’s coast, 4 sites from the inner of the Island, and 1 specific wetland site). The grain size was determined using a standard wet sieving procedure. The extractable organic matter (OM) was quantified after Soxhlet extraction, and aliphatic and aromatic fractions were isolated by column chromatography. n-Alkanes, diterpanes, terpanes, steranes, and 16 PAHs are analyzed by gas chromatography-mass spectrometry.

Results and discussion
Sand fraction predominates in coastal samples, and clay size fraction in the samples from the inner island environment. The predominance of odd higher n-alkanes indicates the terrestrial origin of OM, while the distribution of lower n-alkanes indicates a certain proportion of algae, bacteria, and/or high maturity of OM. The presence of oil-type pollutants is confirmed by thermodynamically stable biomarker isomers and/or the presence of unresolved complex mixture (UCM). Inner island samples are characterized by the largest amount of Corg (up 6%), indicating high bioproductivity and good preservation of OM. Samples from wetland environment are distinguished by the domination of pimaranes and phyllocladanes among saturated hydrocarbons.

Conclusions
This study revealed that sediments of the GWI mainly contain native OM with a certain anthropogenic input. The native OM predominately comes from higher terrestrial plants (Salix alba, Populus nigra, Fraxinus viridis, Taxodium distichum Rich.), followed by various types of grasses, macrophytes (Salvinia natans, Nymphaea alba), bacteria, algae, and phytoplankton. Anthropogenic OM originates from petroleum, but also combustion products arrived by deposition from the air and runoff.
PB  - Springer
T2  - Journal of Soil and Sediments
T1  - Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)
VL  - 22
SP  - 640
EP  - 655
DO  - 10.1007/s11368-021-03103-w
ER  - 

@article{
author = "Stojadinović, Sanja and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Gajica, Gordana and Veselinović, Gorica and Štrbac, Snežana and Jovančićević, Branimir",
year = "2022",
abstract = "Purpose
The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of Belgrade at the Sava and Danube River’s confluence. The position of GWI causes a large number of possible hydrocarbons inputs that influence the quality of both river waters and sediments. The main objective of this research is to assess the distribution and source of hydrocarbons in sediments deposited at the GWI depending on the river’s flow regimes and depositional environment.

Material and methods
Sediment samples were collected from 16 sites (11 sites along the GWI’s coast, 4 sites from the inner of the Island, and 1 specific wetland site). The grain size was determined using a standard wet sieving procedure. The extractable organic matter (OM) was quantified after Soxhlet extraction, and aliphatic and aromatic fractions were isolated by column chromatography. n-Alkanes, diterpanes, terpanes, steranes, and 16 PAHs are analyzed by gas chromatography-mass spectrometry.

Results and discussion
Sand fraction predominates in coastal samples, and clay size fraction in the samples from the inner island environment. The predominance of odd higher n-alkanes indicates the terrestrial origin of OM, while the distribution of lower n-alkanes indicates a certain proportion of algae, bacteria, and/or high maturity of OM. The presence of oil-type pollutants is confirmed by thermodynamically stable biomarker isomers and/or the presence of unresolved complex mixture (UCM). Inner island samples are characterized by the largest amount of Corg (up 6%), indicating high bioproductivity and good preservation of OM. Samples from wetland environment are distinguished by the domination of pimaranes and phyllocladanes among saturated hydrocarbons.

Conclusions
This study revealed that sediments of the GWI mainly contain native OM with a certain anthropogenic input. The native OM predominately comes from higher terrestrial plants (Salix alba, Populus nigra, Fraxinus viridis, Taxodium distichum Rich.), followed by various types of grasses, macrophytes (Salvinia natans, Nymphaea alba), bacteria, algae, and phytoplankton. Anthropogenic OM originates from petroleum, but also combustion products arrived by deposition from the air and runoff.",
publisher = "Springer",
journal = "Journal of Soil and Sediments",
title = "Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)",
volume = "22",
pages = "640-655",
doi = "10.1007/s11368-021-03103-w"
}

Stojadinović, S., Šajnović, A., Kašanin-Grubin, M., Gajica, G., Veselinović, G., Štrbac, S.,& Jovančićević, B.. (2022). Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia). in Journal of Soil and Sediments
Springer., 22, 640-655.
https://doi.org/10.1007/s11368-021-03103-w

Stojadinović S, Šajnović A, Kašanin-Grubin M, Gajica G, Veselinović G, Štrbac S, Jovančićević B. Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia). in Journal of Soil and Sediments. 2022;22:640-655.
doi:10.1007/s11368-021-03103-w .

Stojadinović, Sanja, Šajnović, Aleksandra, Kašanin-Grubin, Milica, Gajica, Gordana, Veselinović, Gorica, Štrbac, Snežana, Jovančićević, Branimir, "Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)" in Journal of Soil and Sediments, 22 (2022):640-655,
https://doi.org/10.1007/s11368-021-03103-w . .

TY  - JOUR
AU  - Pržulj, Sanja
AU  - Radojičić, Ana
AU  - Kašanin-Grubin, Milica
AU  - Pešević, Dušica
AU  - Stojadinović, Sanja
AU  - Jovančićević, Branimir
AU  - Veselinović, Gorica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5024
AB  - Heavy metals are naturally occurring elements, but they are regarded as significant environmental pollutants due to their high density and high toxicity even at low concentrations. The aim of this paper is the evaluation of the pollution level of heavy metals in the river and riverbank sediments, as well as the estimation of their origin and spatial differences along the course of the Vrbas River through Banja Luka. The concentrations of metals have been assessed using the Inductively coupled plasma – optical emission spectrometry and Advanced mercury analyzer for mercury determination. The anthropogenic impact on heavy metal concentration in sediments was estimated by the calculating of pollution indices: geoaccumulation index (Igeo ), contamination factor (Cf ), pollution load index (PLI) and potential ecological risk index (Er). Obtained results indicate that there is no statistically significant spatial difference in metal concentration, indicating that heavy metals in sediments have a constant source. The anthropogenic impact expressed by the values of pollution indices showed that sites are generally uncontaminated by Co, Cr and V and moderately contaminated by Zn, Cu and Ni. On the contrary, lead, mercury and cadmium pose the highest ecological risk. The anthropogenic source of Pb, Hg and Cd is industry, municipal waste and the combustion of fossil fuels. The obtained results demonstrate the high ecological risk and the need for environmental monitoring, with the aim to support an efficient strategy to reduce local pollution and contamination of the investigated system.
AB  - Тешки метали су елементи природног порекла, али се сматрају значајним полутантима животне средине због велике густине и токсичности, чак и при малим концентрацијама. Циљ овог рада је процена нивоа загађености речних и приобалних седимената тешким металима, као и процена њиховог порекла и просторне расподеле дуж тока реке Врбас кроз Бањалуку. Концентрације тешких метала одређиване су помоћу индуктивно спрегнуте плазме – оптичке емисионе спектрометрије и наменског живиног анализатора. Антропогени утицај на концентрацију тешких метала у седиментима процењен је израчунавањем различитих индекса загађења: индекса геоакумулације (Igeo),фактора контаминације (Cf), индекса оптерећења загађењем (PLI) и индекса потенцијалног еколошког ризика (Er). Добијени резултати указују да не постоје статистички значајне просторне разлике у концентрацији метала, што указује на то да тешки метали у испитиваним седиментима имају константан извор. Антропогени утицај изражен у вредностима индекса загађења показао је да су локације генерално незагађене кобалтом, хромом и ванадијумом, а умерено загађене цинком, бакром и никлом. С друге стране, кадмијум, жива и олово представљају највећи еколошки ризик. Антропогени извори ових метала су индустрија, комунални отпад и сагоревање фосилних горива. Добијени резултати показују висок еколошки ризик и потребу за мониторингом животне средине, подржавајући развој ефикасне стратегије за смањење локалног загађења и загађења испитиваног подручја.
PB  - Serbian Chemical Society
T2  - Journal of Serbian Chemical Society
T1  - Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina
T1  - Примена индекса загађења у одређивању просторних и временских разлика у концентрацији тешких метала у седиментима реке Врбас, (Бања Лука, Босна и Херцеговина)
VL  - 87
IS  - 4
SP  - 519
EP  - 530
DO  - 10.2298/JSC210608070P
ER  - 

@article{
author = "Pržulj, Sanja and Radojičić, Ana and Kašanin-Grubin, Milica and Pešević, Dušica and Stojadinović, Sanja and Jovančićević, Branimir and Veselinović, Gorica",
year = "2022",
abstract = "Heavy metals are naturally occurring elements, but they are regarded as significant environmental pollutants due to their high density and high toxicity even at low concentrations. The aim of this paper is the evaluation of the pollution level of heavy metals in the river and riverbank sediments, as well as the estimation of their origin and spatial differences along the course of the Vrbas River through Banja Luka. The concentrations of metals have been assessed using the Inductively coupled plasma – optical emission spectrometry and Advanced mercury analyzer for mercury determination. The anthropogenic impact on heavy metal concentration in sediments was estimated by the calculating of pollution indices: geoaccumulation index (Igeo ), contamination factor (Cf ), pollution load index (PLI) and potential ecological risk index (Er). Obtained results indicate that there is no statistically significant spatial difference in metal concentration, indicating that heavy metals in sediments have a constant source. The anthropogenic impact expressed by the values of pollution indices showed that sites are generally uncontaminated by Co, Cr and V and moderately contaminated by Zn, Cu and Ni. On the contrary, lead, mercury and cadmium pose the highest ecological risk. The anthropogenic source of Pb, Hg and Cd is industry, municipal waste and the combustion of fossil fuels. The obtained results demonstrate the high ecological risk and the need for environmental monitoring, with the aim to support an efficient strategy to reduce local pollution and contamination of the investigated system., Тешки метали су елементи природног порекла, али се сматрају значајним полутантима животне средине због велике густине и токсичности, чак и при малим концентрацијама. Циљ овог рада је процена нивоа загађености речних и приобалних седимената тешким металима, као и процена њиховог порекла и просторне расподеле дуж тока реке Врбас кроз Бањалуку. Концентрације тешких метала одређиване су помоћу индуктивно спрегнуте плазме – оптичке емисионе спектрометрије и наменског живиног анализатора. Антропогени утицај на концентрацију тешких метала у седиментима процењен је израчунавањем различитих индекса загађења: индекса геоакумулације (Igeo),фактора контаминације (Cf), индекса оптерећења загађењем (PLI) и индекса потенцијалног еколошког ризика (Er). Добијени резултати указују да не постоје статистички значајне просторне разлике у концентрацији метала, што указује на то да тешки метали у испитиваним седиментима имају константан извор. Антропогени утицај изражен у вредностима индекса загађења показао је да су локације генерално незагађене кобалтом, хромом и ванадијумом, а умерено загађене цинком, бакром и никлом. С друге стране, кадмијум, жива и олово представљају највећи еколошки ризик. Антропогени извори ових метала су индустрија, комунални отпад и сагоревање фосилних горива. Добијени резултати показују висок еколошки ризик и потребу за мониторингом животне средине, подржавајући развој ефикасне стратегије за смањење локалног загађења и загађења испитиваног подручја.",
publisher = "Serbian Chemical Society",
journal = "Journal of Serbian Chemical Society",
title = "Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina, Примена индекса загађења у одређивању просторних и временских разлика у концентрацији тешких метала у седиментима реке Врбас, (Бања Лука, Босна и Херцеговина)",
volume = "87",
number = "4",
pages = "519-530",
doi = "10.2298/JSC210608070P"
}

Pržulj, S., Radojičić, A., Kašanin-Grubin, M., Pešević, D., Stojadinović, S., Jovančićević, B.,& Veselinović, G.. (2022). Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina. in Journal of Serbian Chemical Society
Serbian Chemical Society., 87(4), 519-530.
https://doi.org/10.2298/JSC210608070P

Pržulj S, Radojičić A, Kašanin-Grubin M, Pešević D, Stojadinović S, Jovančićević B, Veselinović G. Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina. in Journal of Serbian Chemical Society. 2022;87(4):519-530.
doi:10.2298/JSC210608070P .

Pržulj, Sanja, Radojičić, Ana, Kašanin-Grubin, Milica, Pešević, Dušica, Stojadinović, Sanja, Jovančićević, Branimir, Veselinović, Gorica, "Distribution and provenance of heavy metals in sediments of the Vrbas River, Bosnia and Herzegovina" in Journal of Serbian Chemical Society, 87, no. 4 (2022):519-530,
https://doi.org/10.2298/JSC210608070P . .

TY  - JOUR
AU  - Gajica, Gordana
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija
AU  - Schwarzbauer, Jan
AU  - Kostić, Aleksandar
AU  - Jovančićević, Branimir
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4900
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.
PB  - Elsevier
T2  - Marine and Petroleum Geology
T1  - A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
VL  - 136
SP  - 105383
DO  - 10.1016/j.marpetgeo.2021.105383
ER  - 

@article{
author = "Gajica, Gordana and Šajnović, Aleksandra and Stojanović, Ksenija and Schwarzbauer, Jan and Kostić, Aleksandar and Jovančićević, Branimir",
year = "2022",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.",
publisher = "Elsevier",
journal = "Marine and Petroleum Geology",
title = "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)",
volume = "136",
pages = "105383",
doi = "10.1016/j.marpetgeo.2021.105383"
}

Gajica, G., Šajnović, A., Stojanović, K., Schwarzbauer, J., Kostić, A.,& Jovančićević, B.. (2022). A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology
Elsevier., 136, 105383.
https://doi.org/10.1016/j.marpetgeo.2021.105383

Gajica G, Šajnović A, Stojanović K, Schwarzbauer J, Kostić A, Jovančićević B. A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology. 2022;136:105383.
doi:10.1016/j.marpetgeo.2021.105383 .

Gajica, Gordana, Šajnović, Aleksandra, Stojanović, Ksenija, Schwarzbauer, Jan, Kostić, Aleksandar, Jovančićević, Branimir, "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, 136 (2022):105383,
https://doi.org/10.1016/j.marpetgeo.2021.105383 . .

TY  - JOUR
AU  - Gajica, Gordana
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija
AU  - Schwarzbauer, Jan
AU  - Kostić, Aleksandar
AU  - Jovančićević, Branimir
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5233
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.
PB  - Elsevier
T2  - Marine and Petroleum Geology
T1  - A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
VL  - 136
SP  - 105383
DO  - 10.1016/j.marpetgeo.2021.105383
ER  - 

@article{
author = "Gajica, Gordana and Šajnović, Aleksandra and Stojanović, Ksenija and Schwarzbauer, Jan and Kostić, Aleksandar and Jovančićević, Branimir",
year = "2022",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were performed on two selected samples that showed high content of total organic carbon and hydrocarbon generation potential, but also certain variations in sources/depositional environment of organic matter (type I and mixed type I/II kerogen) within previous research of the oil shales sample set. The biomarker signatures were evaluated using gas chromatography-mass spectrometry (GC-MS) and δ13C of individual n-alkanes in bitumen and liquid pyrolysates. The molecular composition of liquid pyrolysates from the OS is very similar to those in initial bitumen, independently on kerogen type, confirming algal origin of organic matter (OM) deposited in lacustrine environment, even more apparently than results of initial bitumen. Therefore, OS can be useful for assessment of source and depositional environment of OM. Pyrolysis in the CS caused more intense thermal alterations, therefore the source fingerprints sometimes notably disappear. The liquid pyrolysates from the CS have the distributions of biomarkers similar to those in crude oils. The biomarker maturity parameters showed slightly higher values in the CS pyrolysate of mixed type I/II kerogen in relation to type I kerogen. δ13C of n-alkanes in liquid pyrolysates from the OS are isotopically lighter in comparison to bitumen, independently on kerogen type. Oppositely, in liquid pyrolysates from the CS, they become heavier than in bitumen, indicating the thermal influence on δ13C signatures, with more pronounced difference for type I kerogen.",
publisher = "Elsevier",
journal = "Marine and Petroleum Geology",
title = "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)",
volume = "136",
pages = "105383",
doi = "10.1016/j.marpetgeo.2021.105383"
}

Gajica, G., Šajnović, A., Stojanović, K., Schwarzbauer, J., Kostić, A.,& Jovančićević, B.. (2022). A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology
Elsevier., 136, 105383.
https://doi.org/10.1016/j.marpetgeo.2021.105383

Gajica G, Šajnović A, Stojanović K, Schwarzbauer J, Kostić A, Jovančićević B. A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems). in Marine and Petroleum Geology. 2022;136:105383.
doi:10.1016/j.marpetgeo.2021.105383 .

Gajica, Gordana, Šajnović, Aleksandra, Stojanović, Ksenija, Schwarzbauer, Jan, Kostić, Aleksandar, Jovančićević, Branimir, "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, 136 (2022):105383,
https://doi.org/10.1016/j.marpetgeo.2021.105383 . .

TY  - JOUR
AU  - Jednak Berić, Tanja
AU  - Avdalović, Jelena
AU  - Milić, Jelena
AU  - Teofilović, Vesna
AU  - Vrvić, Miroslav
AU  - Jovančićević, Branimir
AU  - Miletić, Srđan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5503
AB  - Refinery wastes generated in conventional crude oil refining processes, or in accidental situations, are complex substrates for treatment and disposal. Petroleum desulphurisation catalysts can also be hazardous refinery waste. They contain various metals, such as cobalt, molybdenum, nickel and tungsten. In this paper, three petroleum refiner’s spent desulphurisation catalysts were investigated. These catalysts were not suitable for recycling and, therefore, were classified as hazardous waste. They were chemically characterised, including phase composition and their effect on a consortium of microorganisms used in the process of bioremediation. Catalysts contained up to 2.26 g kg−1 of total petroleum hydrocarbons, up to 56.7 g kg−1 of iron, 18.6 g kg−1 of molybdenum, and less than 0.1 mg kg−1 each of cobalt and nickel. These obtained results show that bioremediation of such waste is possible.
PB  - Taylor & Francis
T2  - Chemistry and Ecology
T1  - The influence on microorganisms of heavy metals from refiner’s spent desulphurisation catalysts
DO  - 10.1080/02757540.2022.2158185
ER  - 

@article{
author = "Jednak Berić, Tanja and Avdalović, Jelena and Milić, Jelena and Teofilović, Vesna and Vrvić, Miroslav and Jovančićević, Branimir and Miletić, Srđan",
year = "2022",
abstract = "Refinery wastes generated in conventional crude oil refining processes, or in accidental situations, are complex substrates for treatment and disposal. Petroleum desulphurisation catalysts can also be hazardous refinery waste. They contain various metals, such as cobalt, molybdenum, nickel and tungsten. In this paper, three petroleum refiner’s spent desulphurisation catalysts were investigated. These catalysts were not suitable for recycling and, therefore, were classified as hazardous waste. They were chemically characterised, including phase composition and their effect on a consortium of microorganisms used in the process of bioremediation. Catalysts contained up to 2.26 g kg−1 of total petroleum hydrocarbons, up to 56.7 g kg−1 of iron, 18.6 g kg−1 of molybdenum, and less than 0.1 mg kg−1 each of cobalt and nickel. These obtained results show that bioremediation of such waste is possible.",
publisher = "Taylor & Francis",
journal = "Chemistry and Ecology",
title = "The influence on microorganisms of heavy metals from refiner’s spent desulphurisation catalysts",
doi = "10.1080/02757540.2022.2158185"
}

Jednak Berić, T., Avdalović, J., Milić, J., Teofilović, V., Vrvić, M., Jovančićević, B.,& Miletić, S.. (2022). The influence on microorganisms of heavy metals from refiner’s spent desulphurisation catalysts. in Chemistry and Ecology
Taylor & Francis..
https://doi.org/10.1080/02757540.2022.2158185

Jednak Berić T, Avdalović J, Milić J, Teofilović V, Vrvić M, Jovančićević B, Miletić S. The influence on microorganisms of heavy metals from refiner’s spent desulphurisation catalysts. in Chemistry and Ecology. 2022;.
doi:10.1080/02757540.2022.2158185 .

Jednak Berić, Tanja, Avdalović, Jelena, Milić, Jelena, Teofilović, Vesna, Vrvić, Miroslav, Jovančićević, Branimir, Miletić, Srđan, "The influence on microorganisms of heavy metals from refiner’s spent desulphurisation catalysts" in Chemistry and Ecology (2022),
https://doi.org/10.1080/02757540.2022.2158185 . .

TY  - CONF
AU  - Despotović, Ignjat
AU  - Lugonja, Nikoleta
AU  - Miletić, Srđan
AU  - Mašek, O.
AU  - Beškoski, Vladimir
AU  - Jovančićević, Branimir
AU  - Gajica, Gordana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5456
AB  - Petroleum pollutants and organic waste are both important environmental issues. Biochar is a highly complex and heterogenous material consisting of both organic and inorganic compounds obtained by thermal degradation of organic wastes. Using biochar for removal of petroleum pollutants could decrease the environmental impact of both petroleum pollutants and organic waste. Furthermore, immobilising microorganisms on biochar could increase removal trough the effect of biosorption and eventually biodegradation. The aim of this research was to examine the efficiency of removal of petroleum hydrocarbons using biochar, microbial consortium and their
combination. Microorganisms were isolated from soil polluted with hydrocarbons and enriched on media supplemented with diesel, while two biochar samples (made from wheat straw pellets and sewage sludge) were used as adsorbers and carriers for immobilization of these hydrocarbon degrading microorganisms.
The remediation study was performed on water samples prepared in laboratory condition by adding crude oil and minerals into the distilled water. The period of the remediation was 96 days, while the analysis of the removal and degradation of petroleum pollutants was performed every 32 days for each sample.
Measurement of the removal of total petroleum pollutants was followed gravimetrically measuring fraction of extracted soluble organic matter, separated saturated and aromatic fractions of crude oil that remained in water phase. Furthermore, saturated and aromatic fractions were analysed by GC-MS. From the obtained results it can be seen that more than 99% of crude oil was removed from numerous water samples and that microorganisms primarily degrade n-alkanes over other groups of compounds.
In further studies, if method effectiveness proven successful, should be tested on real samples and it should be scaled up for industrial purposes.
PB  - Association of Chemistry and the Environment
PB  - Univerza v Ljubljani, Zdravstvena fakulteta
C3  - Book of Abstracts - The 22nd European Meeting on Environmental Chemistry (EMEC 22), 5 – 8 December,2022, Ljubljana, Slovenia
T1  - Sorption and Biosorption of Petroleum Pollutants from Water Samples Using Biochar, Hydrocarbon Degrading Microorganisms and Their Combination
SP  - 78
DO  - 10.55295/9789612970352
ER  - 

@conference{
author = "Despotović, Ignjat and Lugonja, Nikoleta and Miletić, Srđan and Mašek, O. and Beškoski, Vladimir and Jovančićević, Branimir and Gajica, Gordana",
year = "2022",
abstract = "Petroleum pollutants and organic waste are both important environmental issues. Biochar is a highly complex and heterogenous material consisting of both organic and inorganic compounds obtained by thermal degradation of organic wastes. Using biochar for removal of petroleum pollutants could decrease the environmental impact of both petroleum pollutants and organic waste. Furthermore, immobilising microorganisms on biochar could increase removal trough the effect of biosorption and eventually biodegradation. The aim of this research was to examine the efficiency of removal of petroleum hydrocarbons using biochar, microbial consortium and their
combination. Microorganisms were isolated from soil polluted with hydrocarbons and enriched on media supplemented with diesel, while two biochar samples (made from wheat straw pellets and sewage sludge) were used as adsorbers and carriers for immobilization of these hydrocarbon degrading microorganisms.
The remediation study was performed on water samples prepared in laboratory condition by adding crude oil and minerals into the distilled water. The period of the remediation was 96 days, while the analysis of the removal and degradation of petroleum pollutants was performed every 32 days for each sample.
Measurement of the removal of total petroleum pollutants was followed gravimetrically measuring fraction of extracted soluble organic matter, separated saturated and aromatic fractions of crude oil that remained in water phase. Furthermore, saturated and aromatic fractions were analysed by GC-MS. From the obtained results it can be seen that more than 99% of crude oil was removed from numerous water samples and that microorganisms primarily degrade n-alkanes over other groups of compounds.
In further studies, if method effectiveness proven successful, should be tested on real samples and it should be scaled up for industrial purposes.",
publisher = "Association of Chemistry and the Environment, Univerza v Ljubljani, Zdravstvena fakulteta",
journal = "Book of Abstracts - The 22nd European Meeting on Environmental Chemistry (EMEC 22), 5 – 8 December,2022, Ljubljana, Slovenia",
title = "Sorption and Biosorption of Petroleum Pollutants from Water Samples Using Biochar, Hydrocarbon Degrading Microorganisms and Their Combination",
pages = "78",
doi = "10.55295/9789612970352"
}

Despotović, I., Lugonja, N., Miletić, S., Mašek, O., Beškoski, V., Jovančićević, B.,& Gajica, G.. (2022). Sorption and Biosorption of Petroleum Pollutants from Water Samples Using Biochar, Hydrocarbon Degrading Microorganisms and Their Combination. in Book of Abstracts - The 22nd European Meeting on Environmental Chemistry (EMEC 22), 5 – 8 December,2022, Ljubljana, Slovenia
Association of Chemistry and the Environment., 78.
https://doi.org/10.55295/9789612970352

Despotović I, Lugonja N, Miletić S, Mašek O, Beškoski V, Jovančićević B, Gajica G. Sorption and Biosorption of Petroleum Pollutants from Water Samples Using Biochar, Hydrocarbon Degrading Microorganisms and Their Combination. in Book of Abstracts - The 22nd European Meeting on Environmental Chemistry (EMEC 22), 5 – 8 December,2022, Ljubljana, Slovenia. 2022;:78.
doi:10.55295/9789612970352 .

Despotović, Ignjat, Lugonja, Nikoleta, Miletić, Srđan, Mašek, O., Beškoski, Vladimir, Jovančićević, Branimir, Gajica, Gordana, "Sorption and Biosorption of Petroleum Pollutants from Water Samples Using Biochar, Hydrocarbon Degrading Microorganisms and Their Combination" in Book of Abstracts - The 22nd European Meeting on Environmental Chemistry (EMEC 22), 5 – 8 December,2022, Ljubljana, Slovenia (2022):78,
https://doi.org/10.55295/9789612970352 . .

TY  - JOUR
AU  - Bulatović, Sandra
AU  - Ilić, Mila
AU  - Šolević Knudsen, Tatjana
AU  - Milić, Jelena
AU  - Pucarević, Mira
AU  - Jovančićević, Branimir
AU  - Vrvić, Miroslav
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4804
AB  - The oil pollutant in the Sava River aquifer in the residential area of Belgrade, Serbia was investigated in order to analyze the extent, origin and spatial distribution of the pollution, with the aim to estimate potential human health risks from exposure to the compounds detected. Analytical methods indicated that the dominant compounds in this oil pollutant were gasoline range organic compounds. Benzene, toluene, ethylbenzene and xylenes (BTEX) were identified as compounds of concern and quantified by headspace gas chromatography. The concentrations of benzene measured at all sampling points were higher than the remediation value while the maximum concentrations of BTEX quantified were among the highest concentrations of these compounds reported in the petroleum-contaminated aquifers in the world. The assessment of the human health risks from exposure to BTEX-covered industrial scenario for adult receptors and residential scenario for adult receptors and children. The exposure routes analyzed were dermal contact with and ingestion of contaminated water, considering both cancer and non-cancer effects. The analysis of the lifetime incremental cancer risk indicated the potential for adverse health effects for human exposure at the investigated location, and because of that it was interpreted as an unacceptable risk level or risks of high priority which required immediate consideration for remedial measures at this location. A complete set of mitigation measures was proposed including: groundwater decontamination treatment, installation of filters for tap water, development of the system for monitoring of BTEX in the groundwater and development of the emergency response capacities at this location.
PB  - Switzerland : Springer Nature
T2  - Environmental Geochemistry Health
T1  - Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia
VL  - 44
SP  - 3451
EP  - 3472
DO  - 10.1007/s10653-021-01119-2
ER  - 

@article{
author = "Bulatović, Sandra and Ilić, Mila and Šolević Knudsen, Tatjana and Milić, Jelena and Pucarević, Mira and Jovančićević, Branimir and Vrvić, Miroslav",
year = "2022",
abstract = "The oil pollutant in the Sava River aquifer in the residential area of Belgrade, Serbia was investigated in order to analyze the extent, origin and spatial distribution of the pollution, with the aim to estimate potential human health risks from exposure to the compounds detected. Analytical methods indicated that the dominant compounds in this oil pollutant were gasoline range organic compounds. Benzene, toluene, ethylbenzene and xylenes (BTEX) were identified as compounds of concern and quantified by headspace gas chromatography. The concentrations of benzene measured at all sampling points were higher than the remediation value while the maximum concentrations of BTEX quantified were among the highest concentrations of these compounds reported in the petroleum-contaminated aquifers in the world. The assessment of the human health risks from exposure to BTEX-covered industrial scenario for adult receptors and residential scenario for adult receptors and children. The exposure routes analyzed were dermal contact with and ingestion of contaminated water, considering both cancer and non-cancer effects. The analysis of the lifetime incremental cancer risk indicated the potential for adverse health effects for human exposure at the investigated location, and because of that it was interpreted as an unacceptable risk level or risks of high priority which required immediate consideration for remedial measures at this location. A complete set of mitigation measures was proposed including: groundwater decontamination treatment, installation of filters for tap water, development of the system for monitoring of BTEX in the groundwater and development of the emergency response capacities at this location.",
publisher = "Switzerland : Springer Nature",
journal = "Environmental Geochemistry Health",
title = "Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia",
volume = "44",
pages = "3451-3472",
doi = "10.1007/s10653-021-01119-2"
}

Bulatović, S., Ilić, M., Šolević Knudsen, T., Milić, J., Pucarević, M., Jovančićević, B.,& Vrvić, M.. (2022). Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia. in Environmental Geochemistry Health
Switzerland : Springer Nature., 44, 3451-3472.
https://doi.org/10.1007/s10653-021-01119-2

Bulatović S, Ilić M, Šolević Knudsen T, Milić J, Pucarević M, Jovančićević B, Vrvić M. Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia. in Environmental Geochemistry Health. 2022;44:3451-3472.
doi:10.1007/s10653-021-01119-2 .

Bulatović, Sandra, Ilić, Mila, Šolević Knudsen, Tatjana, Milić, Jelena, Pucarević, Mira, Jovančićević, Branimir, Vrvić, Miroslav, "Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia" in Environmental Geochemistry Health, 44 (2022):3451-3472,
https://doi.org/10.1007/s10653-021-01119-2 . .

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Gajica, Gordana
AU  - Veselinović, Gorica
AU  - Kašanin-Grubin, Milica
AU  - Šolević Knudsen, Tatjana
AU  - Štrbac, Snežana
AU  - Šajnović, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5025
AB  - Biological markers (BMs) are organic compounds in oils in which a precursor is known, and during the transformation of organic matter these compounds undergo certain structural and stereochemical changes. Based on the established precursors of BMs, the origin of the examined oils can be estimated, and based on the intensity and the type of changes and also geological history. It includes defining the deposition medium, the degree of maturation, the length of the oil migration path, the degree of biodegradation. The most studied and applied BMs are normal alkanes, isoprenoid aliphatic alkanes pristane and phytane, and polycyclic alkanes of the sterane and terapane type. On the other hand, in the environmental chemistry, these compounds can significantly contribute to the identification of petroleum pollutants, as well as to the assessment of the migration mechanism and the intensity of biodegradation. This review paper first presents the results related to the application of BMs in the organic geochemical correlations of oil in the south-eastern part of the Pannonian Basin (I). The second part provides an overview of those researches in which the same BMs were used in the identification of oil pollutants and in monitoring their changes during the migration and the biodegradation in rivers and river sediments of Serbia (II).
AB  - Биолошки маркери у нафтама су једињења за које се зна прекурсор, у току трансформација органске супстанце ова једињења трпе извесне структурне и стереохемијске промене. На основу установљеног прекурсора појединачних биомаркера, процењује се порекло испитиваних нафти, а на основу интензитета и типа промена, геолошка историја. Она укључује дефинисање средине таложења, степена матурисаности, дужине миграционог пута нафте, степена биодеградације. Највише изучавани и примењивани биолошки маркери су нормални алкани, изопреноидни алифатични алакани пристан и фитан, и полициклични алкани типа стерана и терпана. С друге стране, у хемији животне средине ова једињења у значајној мери могу да допринесу идентификацији нафтног полутанта, као и процени механизма миграције и интензитета биодеградације. У овом прегледном раду прво су приказани резултати који се односе на примену биолошких маркера у органско геохемијским корелацијама нафти југоисточног дела Панонског басена (I). У другом делу дат је преглед оних радова у којима су исти биолошки маркери коришћени у идентификацији нафтних полутаната и у праћењу његових промена у току миграције и биодеградације у рекама и речним седиментима Србије (II).
PB  - Serbian Chemical Society
T2  - Journal of Serbian Chemical Society
T1  - The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II).
T1  - Употреба биолошких маркера у органско-геохемијским испитивањима порекла и геолошке историје сирових нафти (I) и у процени нафтног загађења река и речних седимената Србије (II)
VL  - 87
IS  - 1
SP  - 7
EP  - 25
DO  - 10.2298/JSC210701072J
ER  - 

@article{
author = "Jovančićević, Branimir and Gajica, Gordana and Veselinović, Gorica and Kašanin-Grubin, Milica and Šolević Knudsen, Tatjana and Štrbac, Snežana and Šajnović, Aleksandra",
year = "2022",
abstract = "Biological markers (BMs) are organic compounds in oils in which a precursor is known, and during the transformation of organic matter these compounds undergo certain structural and stereochemical changes. Based on the established precursors of BMs, the origin of the examined oils can be estimated, and based on the intensity and the type of changes and also geological history. It includes defining the deposition medium, the degree of maturation, the length of the oil migration path, the degree of biodegradation. The most studied and applied BMs are normal alkanes, isoprenoid aliphatic alkanes pristane and phytane, and polycyclic alkanes of the sterane and terapane type. On the other hand, in the environmental chemistry, these compounds can significantly contribute to the identification of petroleum pollutants, as well as to the assessment of the migration mechanism and the intensity of biodegradation. This review paper first presents the results related to the application of BMs in the organic geochemical correlations of oil in the south-eastern part of the Pannonian Basin (I). The second part provides an overview of those researches in which the same BMs were used in the identification of oil pollutants and in monitoring their changes during the migration and the biodegradation in rivers and river sediments of Serbia (II)., Биолошки маркери у нафтама су једињења за које се зна прекурсор, у току трансформација органске супстанце ова једињења трпе извесне структурне и стереохемијске промене. На основу установљеног прекурсора појединачних биомаркера, процењује се порекло испитиваних нафти, а на основу интензитета и типа промена, геолошка историја. Она укључује дефинисање средине таложења, степена матурисаности, дужине миграционог пута нафте, степена биодеградације. Највише изучавани и примењивани биолошки маркери су нормални алкани, изопреноидни алифатични алакани пристан и фитан, и полициклични алкани типа стерана и терпана. С друге стране, у хемији животне средине ова једињења у значајној мери могу да допринесу идентификацији нафтног полутанта, као и процени механизма миграције и интензитета биодеградације. У овом прегледном раду прво су приказани резултати који се односе на примену биолошких маркера у органско геохемијским корелацијама нафти југоисточног дела Панонског басена (I). У другом делу дат је преглед оних радова у којима су исти биолошки маркери коришћени у идентификацији нафтних полутаната и у праћењу његових промена у току миграције и биодеградације у рекама и речним седиментима Србије (II).",
publisher = "Serbian Chemical Society",
journal = "Journal of Serbian Chemical Society",
title = "The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II)., Употреба биолошких маркера у органско-геохемијским испитивањима порекла и геолошке историје сирових нафти (I) и у процени нафтног загађења река и речних седимената Србије (II)",
volume = "87",
number = "1",
pages = "7-25",
doi = "10.2298/JSC210701072J"
}

Jovančićević, B., Gajica, G., Veselinović, G., Kašanin-Grubin, M., Šolević Knudsen, T., Štrbac, S.,& Šajnović, A.. (2022). The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II).. in Journal of Serbian Chemical Society
Serbian Chemical Society., 87(1), 7-25.
https://doi.org/10.2298/JSC210701072J

Jovančićević B, Gajica G, Veselinović G, Kašanin-Grubin M, Šolević Knudsen T, Štrbac S, Šajnović A. The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II).. in Journal of Serbian Chemical Society. 2022;87(1):7-25.
doi:10.2298/JSC210701072J .

Jovančićević, Branimir, Gajica, Gordana, Veselinović, Gorica, Kašanin-Grubin, Milica, Šolević Knudsen, Tatjana, Štrbac, Snežana, Šajnović, Aleksandra, "The use of biological markers in organic geochemical investigations of the origin and geological history of crude oils (I) and in the assessment of oil pollution of rivers and river sediments of Serbia (II)." in Journal of Serbian Chemical Society, 87, no. 1 (2022):7-25,
https://doi.org/10.2298/JSC210701072J . .

TY  - CONF
AU  - Pržulj, Sanja
AU  - Veselinović, Gorica
AU  - Ivanišević, Marko
AU  - Gnjato, Slobodan
AU  - Balaban, Milica
AU  - Jovančićević, Branimir
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6205
AB  - PAHs are a group of ubiquitous persistent organic pollutants that cause sever global environmental 
concerns for ecosystems and human health due to their potential toxicity and carcinogenicity. PAHs are a group of organic pollutants strongly related to anthropogenic activities such as settlement, transport, and industrial development. Due to their lipophilicity and persistence, PAHs are readily adsorbed in the particulate matter once they enter the urban river system and are finally deposited in the sediment. [1] The aim of this work was to evaluate the distribution of PAHs in the sediments of Vrbas River, to assess their occurrence and to establish the origin 
 (pyrogenic/petrogenic) of pollution sources.This study focussed on investigation on the state of pollution and identification of potential sources of contamination of river sediments by polycyclic aromatic hydrocarbons along entire course of the Vrbas River (Bosnia and Herzegovina). 
Nineteen sampling points were selected covering the entire course of the Vrbas River (Bosnia and 
Herzegovina). The samples were extracted in a Soxhlet apparatus and fractionated using column 
chromatography. In the fraction of aromatic hydrocarbons, PAHs were analysed by gas chromatography - mass spectrometry (GC-MS) in a selected ion monitoring (SIM) mode. The ions 
monitored were: m/z = 128 (naphthalene), m/z = 152 (acenaphthylene), m/z = 154 acenaphthene), 
m/z = 166 (fluorene), m/z = 178 (phenanthrene andanthracene), m/z = 202 (fluoranthene and 
pyrene), m/z = 228 (benzo[a]anthracene and chrysene), m/z = 252 (benzo[b]fluoranthene, 
benzo[k]fluoranthene, benzo[j]fluoranthene, benzo[e]pyrene and benzo[a]pyrene), m/z = 276 
(indeno[1,2,3-c,d]pyrene and benzo[g,h,i]perylene), and m/z = 278 (dibenzo[a,h]anthracene) [2]. Thereafter numerous PAH diagnostic ratios were calculated and analysed. High molecular weight polycyclic aromatic hydrocarbons (4, 5 or 6 rings) are more prevalent in the observed samples. The analysis of different PAH diagnostic ratios indicate the pyrogenic PAHs origin. In most samples, according to calculated parameters, these are combustion products of coal, grass, and wood, while in some samples these parameters implicate the fuel combustion origin of PAHs. No regularity was observed in the distribution of PAHs in the samples, indicating the existence of multiple sources of these compounds in the investigated area. Thus, the conclusion is that 
this area was exposed to both point and diffuse sources of PAH contaminants.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Program and the Book of Abstracts - 23rd Annual Conference YUCOMAT 2022 & 12th World Round Table Conference on Sintering WRTCS 2022, August 29 - September 2, 2022, Herceg Novi, Montenegro
T1  - Study of oil type pollutant adsorption on Vrbas River sediments (Bosnia and Herecgovina)
SP  - 141
EP  - 141
UR  - https://hdl.handle.net/21.15107/rcub_cer_6205
ER  - 

@conference{
author = "Pržulj, Sanja and Veselinović, Gorica and Ivanišević, Marko and Gnjato, Slobodan and Balaban, Milica and Jovančićević, Branimir",
year = "2022",
abstract = "PAHs are a group of ubiquitous persistent organic pollutants that cause sever global environmental 
concerns for ecosystems and human health due to their potential toxicity and carcinogenicity. PAHs are a group of organic pollutants strongly related to anthropogenic activities such as settlement, transport, and industrial development. Due to their lipophilicity and persistence, PAHs are readily adsorbed in the particulate matter once they enter the urban river system and are finally deposited in the sediment. [1] The aim of this work was to evaluate the distribution of PAHs in the sediments of Vrbas River, to assess their occurrence and to establish the origin 
 (pyrogenic/petrogenic) of pollution sources.This study focussed on investigation on the state of pollution and identification of potential sources of contamination of river sediments by polycyclic aromatic hydrocarbons along entire course of the Vrbas River (Bosnia and Herzegovina). 
Nineteen sampling points were selected covering the entire course of the Vrbas River (Bosnia and 
Herzegovina). The samples were extracted in a Soxhlet apparatus and fractionated using column 
chromatography. In the fraction of aromatic hydrocarbons, PAHs were analysed by gas chromatography - mass spectrometry (GC-MS) in a selected ion monitoring (SIM) mode. The ions 
monitored were: m/z = 128 (naphthalene), m/z = 152 (acenaphthylene), m/z = 154 acenaphthene), 
m/z = 166 (fluorene), m/z = 178 (phenanthrene andanthracene), m/z = 202 (fluoranthene and 
pyrene), m/z = 228 (benzo[a]anthracene and chrysene), m/z = 252 (benzo[b]fluoranthene, 
benzo[k]fluoranthene, benzo[j]fluoranthene, benzo[e]pyrene and benzo[a]pyrene), m/z = 276 
(indeno[1,2,3-c,d]pyrene and benzo[g,h,i]perylene), and m/z = 278 (dibenzo[a,h]anthracene) [2]. Thereafter numerous PAH diagnostic ratios were calculated and analysed. High molecular weight polycyclic aromatic hydrocarbons (4, 5 or 6 rings) are more prevalent in the observed samples. The analysis of different PAH diagnostic ratios indicate the pyrogenic PAHs origin. In most samples, according to calculated parameters, these are combustion products of coal, grass, and wood, while in some samples these parameters implicate the fuel combustion origin of PAHs. No regularity was observed in the distribution of PAHs in the samples, indicating the existence of multiple sources of these compounds in the investigated area. Thus, the conclusion is that 
this area was exposed to both point and diffuse sources of PAH contaminants.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Program and the Book of Abstracts - 23rd Annual Conference YUCOMAT 2022 & 12th World Round Table Conference on Sintering WRTCS 2022, August 29 - September 2, 2022, Herceg Novi, Montenegro",
title = "Study of oil type pollutant adsorption on Vrbas River sediments (Bosnia and Herecgovina)",
pages = "141-141",
url = "https://hdl.handle.net/21.15107/rcub_cer_6205"
}

Pržulj, S., Veselinović, G., Ivanišević, M., Gnjato, S., Balaban, M.,& Jovančićević, B.. (2022). Study of oil type pollutant adsorption on Vrbas River sediments (Bosnia and Herecgovina). in Program and the Book of Abstracts - 23rd Annual Conference YUCOMAT 2022 & 12th World Round Table Conference on Sintering WRTCS 2022, August 29 - September 2, 2022, Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 141-141.
https://hdl.handle.net/21.15107/rcub_cer_6205

Pržulj S, Veselinović G, Ivanišević M, Gnjato S, Balaban M, Jovančićević B. Study of oil type pollutant adsorption on Vrbas River sediments (Bosnia and Herecgovina). in Program and the Book of Abstracts - 23rd Annual Conference YUCOMAT 2022 & 12th World Round Table Conference on Sintering WRTCS 2022, August 29 - September 2, 2022, Herceg Novi, Montenegro. 2022;:141-141.
https://hdl.handle.net/21.15107/rcub_cer_6205 .

Pržulj, Sanja, Veselinović, Gorica, Ivanišević, Marko, Gnjato, Slobodan, Balaban, Milica, Jovančićević, Branimir, "Study of oil type pollutant adsorption on Vrbas River sediments (Bosnia and Herecgovina)" in Program and the Book of Abstracts - 23rd Annual Conference YUCOMAT 2022 & 12th World Round Table Conference on Sintering WRTCS 2022, August 29 - September 2, 2022, Herceg Novi, Montenegro (2022):141-141,
https://hdl.handle.net/21.15107/rcub_cer_6205 .

TY  - CONF
AU  - Stojadinović, Sanja
AU  - Veselinović, Gorica
AU  - Pržulj, Sanja
AU  - Šajnović, Aleksandra
AU  - Gajica, Gordana
AU  - Štrbac, Snežana
AU  - Jovančićević, Branimir
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7488
AB  - The Vrbas River is an important river ecosystem in Bosnia and Herzegovina with a length of 250 km and catchment areas of 5900 km2 . Before reaching Banja Luka, the Vrbas River passes through a canyon and numerous gorges, which are from 1955 protected by the Law on the Protection of Natural Values. This river flows through many towns and villages along the entire course, but the main anthropogenic influence comes from Banja Luka, one of the largest cities in Bosnia and Herzegovina.The aim of this research was to characterise extractable organic matter of sediments from the Vrbas River in the city area of Banja Luka. Six samples were collected at locations which were selected based on the vicinity of potential sources of anthropogenic pollution: 1 and 3 – sites near bridge and frequent traffic, 2 – city’s promenade, 6 – site in the vicinity of the thermal power plant, 7 – site close to Banja Luka Brewery and the bridge on frequent road, and 8 – site close to the food industry “Vitaminka”. Extractable organic matter was isolated with dichloromethane/ methanol mixture using a Soxhlet apparatus. Hydrocarbons were isolated from the extracts using a column chromatography and analyzed by gas chromatography – mass spectrometry (GC-MS). Detailed analysis of n-alkanes (m/z 71), diterpanes (m/z 123), hopanes (m/z 191) and steranes (m/z 217) was done. The individual peaks were identified by comparison with literature data [1] and based on their mass spectra (library: NIST11). Among saturated hydrocarbons diterpane, 16α(H)phyllocladane is the most dominant component in almost all samples (Fig.1). The exception is a sample 7. This diterpane is followed by n-alkanes with a predominance of higher odd homologues.  It indicates predominately native organic matter of Vrbas river sediments, originated mostly from terrestrial plants. That was noticed the predominant presence of native organic material in noticed in samples 2, 3, 6, while the presence of oil type pollutants was confirmed in other samples (1, 7, 8), which are near the bridge and frequent traffic roads. Fig 1. Total ion current (TIC) of saturated fraction. The previous study regarding the contents distribution of heavy metals in these sediments showed that most contaminated samples are at sampling points 2 and 6 [2]. That is not the case with oil contamination pointing to probably different sources of anthropogenic pollution.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of Abstracts 21st - European Meeting on Environmental Chemistry
T1  - Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina)
SP  - 138
EP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_cer_7488
ER  - 

@conference{
author = "Stojadinović, Sanja and Veselinović, Gorica and Pržulj, Sanja and Šajnović, Aleksandra and Gajica, Gordana and Štrbac, Snežana and Jovančićević, Branimir",
year = "2021",
abstract = "The Vrbas River is an important river ecosystem in Bosnia and Herzegovina with a length of 250 km and catchment areas of 5900 km2 . Before reaching Banja Luka, the Vrbas River passes through a canyon and numerous gorges, which are from 1955 protected by the Law on the Protection of Natural Values. This river flows through many towns and villages along the entire course, but the main anthropogenic influence comes from Banja Luka, one of the largest cities in Bosnia and Herzegovina.The aim of this research was to characterise extractable organic matter of sediments from the Vrbas River in the city area of Banja Luka. Six samples were collected at locations which were selected based on the vicinity of potential sources of anthropogenic pollution: 1 and 3 – sites near bridge and frequent traffic, 2 – city’s promenade, 6 – site in the vicinity of the thermal power plant, 7 – site close to Banja Luka Brewery and the bridge on frequent road, and 8 – site close to the food industry “Vitaminka”. Extractable organic matter was isolated with dichloromethane/ methanol mixture using a Soxhlet apparatus. Hydrocarbons were isolated from the extracts using a column chromatography and analyzed by gas chromatography – mass spectrometry (GC-MS). Detailed analysis of n-alkanes (m/z 71), diterpanes (m/z 123), hopanes (m/z 191) and steranes (m/z 217) was done. The individual peaks were identified by comparison with literature data [1] and based on their mass spectra (library: NIST11). Among saturated hydrocarbons diterpane, 16α(H)phyllocladane is the most dominant component in almost all samples (Fig.1). The exception is a sample 7. This diterpane is followed by n-alkanes with a predominance of higher odd homologues.  It indicates predominately native organic matter of Vrbas river sediments, originated mostly from terrestrial plants. That was noticed the predominant presence of native organic material in noticed in samples 2, 3, 6, while the presence of oil type pollutants was confirmed in other samples (1, 7, 8), which are near the bridge and frequent traffic roads. Fig 1. Total ion current (TIC) of saturated fraction. The previous study regarding the contents distribution of heavy metals in these sediments showed that most contaminated samples are at sampling points 2 and 6 [2]. That is not the case with oil contamination pointing to probably different sources of anthropogenic pollution.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of Abstracts 21st - European Meeting on Environmental Chemistry",
title = "Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina)",
pages = "138-138",
url = "https://hdl.handle.net/21.15107/rcub_cer_7488"
}

Stojadinović, S., Veselinović, G., Pržulj, S., Šajnović, A., Gajica, G., Štrbac, S.,& Jovančićević, B.. (2021). Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina). in Book of Abstracts 21st - European Meeting on Environmental Chemistry
Belgrade : Serbian Chemical Society., 138-138.
https://hdl.handle.net/21.15107/rcub_cer_7488

Stojadinović S, Veselinović G, Pržulj S, Šajnović A, Gajica G, Štrbac S, Jovančićević B. Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina). in Book of Abstracts 21st - European Meeting on Environmental Chemistry. 2021;:138-138.
https://hdl.handle.net/21.15107/rcub_cer_7488 .

Stojadinović, Sanja, Veselinović, Gorica, Pržulj, Sanja, Šajnović, Aleksandra, Gajica, Gordana, Štrbac, Snežana, Jovančićević, Branimir, "Determination of Extractable Organic Matter Type from Urban Sediments of Vrbas River (Banja Luka, Bosnia and Herzegovina)" in Book of Abstracts 21st - European Meeting on Environmental Chemistry (2021):138-138,
https://hdl.handle.net/21.15107/rcub_cer_7488 .

TY  - JOUR
AU  - Stojadinović, Sanja
AU  - Jovančićević, Branimir
AU  - Šajnović, Aleksandra
AU  - Golumbenau, Mariana
AU  - Almasan, Roxana
AU  - Jovanović, Đorđe
AU  - Brceski, Ilija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4006
AB  - The Techirghiol Lake, located on the Romanian coast of the Black Sea, is a hypersaline lake. In this environment, a unique ecosystem in Europe has developed with the specific capacity of producing mud by the decomposition of flora and fauna under the microbial activity (saprogenic sludge), which is used for therapeutic purposes.
In this study, hydrocarbon compositions of the Techirghiol Lake mud are investigated in order to determine the origin and type of organic matter (OM). All samples are characterized by a high abundance of n-alkanes, short and high chain alkenes, pimarane, phyllocladane, indicating that OM was mainly derived from phytoplankton, filamentous green alga Cladophora vagabunda, Cyanobacteria, submerged/floating macrophytes, terrestrial and emergent plants. The terrestrial origin of organic matter is probably related to a significant input by wind or rivers. Typical oil distributions of terpanes and steranes biomarkers clearly indicate that the muds of Techirghiol Lake, in addition to native organic matter, contain a relatively low contribution of petroleum type pollutants, as well as PAH compounds of pyrogenic origin. 
The relatively high abundance of 1-chloroalkenes, which in some samples represent the most abundant compounds in the total distribution of hydrocarbons, together with isoprenoid thiophenes indicate the local presence of significant amounts of chloride and sulphur species in the water column or surface sediment.
PB  - Parlar Scientific Publications
T2  - Fresenius Environmental Bulletin
T1  - Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4898
ER  - 

@article{
author = "Stojadinović, Sanja and Jovančićević, Branimir and Šajnović, Aleksandra and Golumbenau, Mariana and Almasan, Roxana and Jovanović, Đorđe and Brceski, Ilija",
year = "2021",
abstract = "The Techirghiol Lake, located on the Romanian coast of the Black Sea, is a hypersaline lake. In this environment, a unique ecosystem in Europe has developed with the specific capacity of producing mud by the decomposition of flora and fauna under the microbial activity (saprogenic sludge), which is used for therapeutic purposes.
In this study, hydrocarbon compositions of the Techirghiol Lake mud are investigated in order to determine the origin and type of organic matter (OM). All samples are characterized by a high abundance of n-alkanes, short and high chain alkenes, pimarane, phyllocladane, indicating that OM was mainly derived from phytoplankton, filamentous green alga Cladophora vagabunda, Cyanobacteria, submerged/floating macrophytes, terrestrial and emergent plants. The terrestrial origin of organic matter is probably related to a significant input by wind or rivers. Typical oil distributions of terpanes and steranes biomarkers clearly indicate that the muds of Techirghiol Lake, in addition to native organic matter, contain a relatively low contribution of petroleum type pollutants, as well as PAH compounds of pyrogenic origin. 
The relatively high abundance of 1-chloroalkenes, which in some samples represent the most abundant compounds in the total distribution of hydrocarbons, together with isoprenoid thiophenes indicate the local presence of significant amounts of chloride and sulphur species in the water column or surface sediment.",
publisher = "Parlar Scientific Publications",
journal = "Fresenius Environmental Bulletin",
title = "Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4898"
}

Stojadinović, S., Jovančićević, B., Šajnović, A., Golumbenau, M., Almasan, R., Jovanović, Đ.,& Brceski, I.. (2021). Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania. in Fresenius Environmental Bulletin
Parlar Scientific Publications..
https://hdl.handle.net/21.15107/rcub_cherry_4898

Stojadinović S, Jovančićević B, Šajnović A, Golumbenau M, Almasan R, Jovanović Đ, Brceski I. Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania. in Fresenius Environmental Bulletin. 2021;.
https://hdl.handle.net/21.15107/rcub_cherry_4898 .

Stojadinović, Sanja, Jovančićević, Branimir, Šajnović, Aleksandra, Golumbenau, Mariana, Almasan, Roxana, Jovanović, Đorđe, Brceski, Ilija, "Organic-geochemical characteristics of the mud from the Techirghiol Lake, Romania" in Fresenius Environmental Bulletin (2021),
https://hdl.handle.net/21.15107/rcub_cherry_4898 .

TY  - CONF
AU  - Antić, Nevena
AU  - Stefanović, Milica
AU  - Mijatović, Nevenka
AU  - Kašanin-Grubin, Milica
AU  - Veselinović, Gorica
AU  - Stojadinović, Sanja
AU  - Jovančićević, Branimir
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7101
AB  - Badlands are areas with scarce or completely absent vegetation formed in a wide range of lithologies in different climate conditions and exposed to a wide range of geomorphological processes [1]. Generally, rapid evolution governed by erosion processes is a consequence of complex mineralogical and physico-chemical sediment composition and climate conditions. Because of that, badlands are often described as natural field laboratories and, furthermore, badland material is suitable for laboratory experiments that can, in controlled conditions, provide insight of changes that occur in the field.
As indicated above, beside lithology, climate is one of the most significant factors in badlands forming. Since human activities have great impact on the environment and since climate changes present one of the biggest environmental pollution problems nowadays, in this research badland material was exposed to different conditions with the aim of monitoring changes caused by extreme climate conditions and acid ice.
Three samples from badlands in China organized in six sets were treated with ice (representing snow) and acid ice (frozen acid rain) during fifteen cycles, dried in the oven for three cycles and afterwards again threated with ice and acid ice for additional five cycles. After each cycle samples were photographed, so that physical changes can be tracked, while leachate was collected and analyzed for monitoring changes in its volume, pH, electrical conductivity (EC) and cation concentration.
Beside slight oscillations in parameters through cycles of samples treated with acid ice, extreme changes in observed parameters were not noticed neither between samples, nor between treatments. Leachate EC were a bit higher in samples treated with ice, leachate volume was higher for samples treated with acid ice, while pH was similar in both cases. Cation concentrations are similar in the leachate of all tested samples. In most of cases, the highest concentrations were measured at the beginning of the experiment, during the first two cycles or during the first “ice” cycles after drying. This indicates the high cation concentrations originate from the sediment surface or washing along the crack that appeared after drying.   
Physical changes that occurred through cycles implied that heat/drought is more aggressive agent of sediment decay. Decay caused by ice is slower, not as aggressive as drought, but not negligible, causing noticeable and significant cracks and fissures of fragments.
 This experiment confirmed that drought has high impact on sediment weathering, but more importantly, pointed out the impact of ice and its thawing, opening new questions about climate impact on forming, erosion processes and evolution of badlands which need to be further examined.
PB  - Belgrade : Serbian Chemical Society
C3  - 21st European Meeting on Environmental Chemistry, EMEC21 - Book of Abstracts, November 30 – December 3, 2021 Novi Sad, Serbia
T1  - Anthropogenic and Climate Influence on Land Degradation
SP  - 141
EP  - 141
UR  - https://hdl.handle.net/21.15107/rcub_cer_7101
ER  - 

@conference{
author = "Antić, Nevena and Stefanović, Milica and Mijatović, Nevenka and Kašanin-Grubin, Milica and Veselinović, Gorica and Stojadinović, Sanja and Jovančićević, Branimir",
year = "2021",
abstract = "Badlands are areas with scarce or completely absent vegetation formed in a wide range of lithologies in different climate conditions and exposed to a wide range of geomorphological processes [1]. Generally, rapid evolution governed by erosion processes is a consequence of complex mineralogical and physico-chemical sediment composition and climate conditions. Because of that, badlands are often described as natural field laboratories and, furthermore, badland material is suitable for laboratory experiments that can, in controlled conditions, provide insight of changes that occur in the field.
As indicated above, beside lithology, climate is one of the most significant factors in badlands forming. Since human activities have great impact on the environment and since climate changes present one of the biggest environmental pollution problems nowadays, in this research badland material was exposed to different conditions with the aim of monitoring changes caused by extreme climate conditions and acid ice.
Three samples from badlands in China organized in six sets were treated with ice (representing snow) and acid ice (frozen acid rain) during fifteen cycles, dried in the oven for three cycles and afterwards again threated with ice and acid ice for additional five cycles. After each cycle samples were photographed, so that physical changes can be tracked, while leachate was collected and analyzed for monitoring changes in its volume, pH, electrical conductivity (EC) and cation concentration.
Beside slight oscillations in parameters through cycles of samples treated with acid ice, extreme changes in observed parameters were not noticed neither between samples, nor between treatments. Leachate EC were a bit higher in samples treated with ice, leachate volume was higher for samples treated with acid ice, while pH was similar in both cases. Cation concentrations are similar in the leachate of all tested samples. In most of cases, the highest concentrations were measured at the beginning of the experiment, during the first two cycles or during the first “ice” cycles after drying. This indicates the high cation concentrations originate from the sediment surface or washing along the crack that appeared after drying.   
Physical changes that occurred through cycles implied that heat/drought is more aggressive agent of sediment decay. Decay caused by ice is slower, not as aggressive as drought, but not negligible, causing noticeable and significant cracks and fissures of fragments.
 This experiment confirmed that drought has high impact on sediment weathering, but more importantly, pointed out the impact of ice and its thawing, opening new questions about climate impact on forming, erosion processes and evolution of badlands which need to be further examined.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "21st European Meeting on Environmental Chemistry, EMEC21 - Book of Abstracts, November 30 – December 3, 2021 Novi Sad, Serbia",
title = "Anthropogenic and Climate Influence on Land Degradation",
pages = "141-141",
url = "https://hdl.handle.net/21.15107/rcub_cer_7101"
}

Antić, N., Stefanović, M., Mijatović, N., Kašanin-Grubin, M., Veselinović, G., Stojadinović, S.,& Jovančićević, B.. (2021). Anthropogenic and Climate Influence on Land Degradation. in 21st European Meeting on Environmental Chemistry, EMEC21 - Book of Abstracts, November 30 – December 3, 2021 Novi Sad, Serbia
Belgrade : Serbian Chemical Society., 141-141.
https://hdl.handle.net/21.15107/rcub_cer_7101

Antić N, Stefanović M, Mijatović N, Kašanin-Grubin M, Veselinović G, Stojadinović S, Jovančićević B. Anthropogenic and Climate Influence on Land Degradation. in 21st European Meeting on Environmental Chemistry, EMEC21 - Book of Abstracts, November 30 – December 3, 2021 Novi Sad, Serbia. 2021;:141-141.
https://hdl.handle.net/21.15107/rcub_cer_7101 .

Antić, Nevena, Stefanović, Milica, Mijatović, Nevenka, Kašanin-Grubin, Milica, Veselinović, Gorica, Stojadinović, Sanja, Jovančićević, Branimir, "Anthropogenic and Climate Influence on Land Degradation" in 21st European Meeting on Environmental Chemistry, EMEC21 - Book of Abstracts, November 30 – December 3, 2021 Novi Sad, Serbia (2021):141-141,
https://hdl.handle.net/21.15107/rcub_cer_7101 .

TY  - CONF
AU  - Gajica, Gordana
AU  - Šajnović, Aleksandra
AU  - Schwarzbauer, Jan
AU  - Kostić, A.
AU  - Jovančićević, Branimir
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7463
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined.The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently on kerogen type. The LPs from the CS pyrolysis have the distributions of biomarkers similar to those in crude oils generated in an early to main stage of “oil window“. The biomarker data suggests that mixed type I/II kerogen attained slightly higher maturity level by the CS pyrolysis than type I kerogen. The isotopic signatures of n-alkanes in LPs obtained by the OS pyrolysis are isotopically lighter than in initial bitumen, independently on kerogen type, whereas in liquid products from the CS they become heavier; showing more pronounced difference for type I kerogen. The results indicate that δ13C data should be used with caution in interpretation of samples having different maturity and particularly of LPs obtained by different system pyrolysis.
PB  - European Association of Geoscientists & Engineers
C3  - Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)
T1  - Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system)
VL  - 2021
DO  - 10.3997/2214-4609.202134040
ER  - 

@conference{
author = "Gajica, Gordana and Šajnović, Aleksandra and Schwarzbauer, Jan and Kostić, A. and Jovančićević, Branimir and Stojanović, Ksenija",
year = "2021",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined.The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently on kerogen type. The LPs from the CS pyrolysis have the distributions of biomarkers similar to those in crude oils generated in an early to main stage of “oil window“. The biomarker data suggests that mixed type I/II kerogen attained slightly higher maturity level by the CS pyrolysis than type I kerogen. The isotopic signatures of n-alkanes in LPs obtained by the OS pyrolysis are isotopically lighter than in initial bitumen, independently on kerogen type, whereas in liquid products from the CS they become heavier; showing more pronounced difference for type I kerogen. The results indicate that δ13C data should be used with caution in interpretation of samples having different maturity and particularly of LPs obtained by different system pyrolysis.",
publisher = "European Association of Geoscientists & Engineers",
journal = "Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)",
title = "Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system)",
volume = "2021",
doi = "10.3997/2214-4609.202134040"
}

Gajica, G., Šajnović, A., Schwarzbauer, J., Kostić, A., Jovančićević, B.,& Stojanović, K.. (2021). Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system). in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)
European Association of Geoscientists & Engineers., 2021.
https://doi.org/10.3997/2214-4609.202134040

Gajica G, Šajnović A, Schwarzbauer J, Kostić A, Jovančićević B, Stojanović K. Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system). in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021). 2021;2021.
doi:10.3997/2214-4609.202134040 .

Gajica, Gordana, Šajnović, Aleksandra, Schwarzbauer, Jan, Kostić, A., Jovančićević, Branimir, Stojanović, Ksenija, "Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system)" in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021), 2021 (2021),
https://doi.org/10.3997/2214-4609.202134040 . .