TY  - JOUR
AU  - Milovanović, Željka
AU  - Lazarević, Slavica
AU  - Janković-Častvan, Ivona
AU  - Radovanović, Željko
AU  - Cvetković, Slobodan
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6578
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7169
AB  - The sepiolite/ZrO2 composites were prepared by sepiolite (Sep) modification with zirconium propoxide in toluene at room temperature for 24 h (Sep–ZrI) or 95 °C for 4 h (sample Sep–ZrII). The efficiency of the obtained composites for the removal of phosphate from aqueous solutions at initial pH = 4 and pH = 8 was investigated. Characterization of the samples shows that synthesis at a higher temperature for a shorter time provides a slightly higher content of amorphous Zr phase, which is deposited on the sepiolite fibers as a thin layer and agglomerated nanoparticles. Compared to Sep, the composites have a lower point of zero charge and higher specific surface area and pore volume. The adsorption kinetics follow the pseudo second-order model. The adsorption capacities of the composites are approximately the same at both initial pH and higher at initial pH = 4 than at pH = 8. The XPS and ATR-FTIR of Sep–ZrI before and after adsorption identifies the formation of inner-sphere complexes as the mechanism of phosphate adsorption. The slow release during desorption with NaOH solution confirms the strong bonds of the phosphates with the surface of the composites.
PB  - MDPI
T2  - Water
T1  - The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism
VL  - 15
IS  - 13
SP  - 2376
DO  - 10.3390/w15132376
ER  - 

@article{
author = "Milovanović, Željka and Lazarević, Slavica and Janković-Častvan, Ivona and Radovanović, Željko and Cvetković, Slobodan and Janaćković, Đorđe and Petrović, Rada",
year = "2023",
abstract = "The sepiolite/ZrO2 composites were prepared by sepiolite (Sep) modification with zirconium propoxide in toluene at room temperature for 24 h (Sep–ZrI) or 95 °C for 4 h (sample Sep–ZrII). The efficiency of the obtained composites for the removal of phosphate from aqueous solutions at initial pH = 4 and pH = 8 was investigated. Characterization of the samples shows that synthesis at a higher temperature for a shorter time provides a slightly higher content of amorphous Zr phase, which is deposited on the sepiolite fibers as a thin layer and agglomerated nanoparticles. Compared to Sep, the composites have a lower point of zero charge and higher specific surface area and pore volume. The adsorption kinetics follow the pseudo second-order model. The adsorption capacities of the composites are approximately the same at both initial pH and higher at initial pH = 4 than at pH = 8. The XPS and ATR-FTIR of Sep–ZrI before and after adsorption identifies the formation of inner-sphere complexes as the mechanism of phosphate adsorption. The slow release during desorption with NaOH solution confirms the strong bonds of the phosphates with the surface of the composites.",
publisher = "MDPI",
journal = "Water",
title = "The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism",
volume = "15",
number = "13",
pages = "2376",
doi = "10.3390/w15132376"
}

Milovanović, Ž., Lazarević, S., Janković-Častvan, I., Radovanović, Ž., Cvetković, S., Janaćković, Đ.,& Petrović, R.. (2023). The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism. in Water
MDPI., 15(13), 2376.
https://doi.org/10.3390/w15132376

Milovanović Ž, Lazarević S, Janković-Častvan I, Radovanović Ž, Cvetković S, Janaćković Đ, Petrović R. The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism. in Water. 2023;15(13):2376.
doi:10.3390/w15132376 .

Milovanović, Željka, Lazarević, Slavica, Janković-Častvan, Ivona, Radovanović, Željko, Cvetković, Slobodan, Janaćković, Đorđe, Petrović, Rada, "The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism" in Water, 15, no. 13 (2023):2376,
https://doi.org/10.3390/w15132376 . .

TY  - CONF
AU  - Milošević, Dragana
AU  - Milošević, Milena
AU  - Perendija, Jovana
AU  - Milovanović, Željka
AU  - Petrović, Predrag
AU  - Marinković, Aleksandar
AU  - Petrović, Rada
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6472
AB  - Water pollution is a consequence of permanent technological development, urbanization and industrialization, having a huge impact on human health and the environment. Thus, metal oxides received considerable scientific interest in the field of adsorption to reduce heavy metal contamination from water and wastewater. Three-dimensionally ordered macroporous (3DOM) alumina modified with iron oxide and (3-aminopropyl)triethoxysilane (APTES) ((FeAl)2O3-APTES) was synthesized and linked with subgleba of Handkea utriformis (S) through 3-(Carbomethoxy)propionyl chloride (CPC). Surface hydroxyl groups of metal oxides have an affinity for cations while the introduction of amino groups in (FeAl)2O3-APTES allows the creation of covalent attachment on subgleba. Subglebal tissue of mosaic puffball Handkea utriformis contains sugars, proteins and melanins i.e. a large number of functional groups that could interact with an adsorbate. The obtained adsorbent (SCPC-(FeAl)2O3-APTES) was used for Pb2+ removal from aqueous solutions under batch conditions, constant initial concentration of adsorbate and pH and different concentrations of the adsorbent. Composition and surface morphology were characterized by using FT-IR and  SEM analysis. Concentrations of Pb2+, before and after adsorption, were determined by using Atomic Absorption Spectroscopy (AAS). The nonlinear Langmuir and Freundlich isotherm models were evaluated to correlate experimental data in which best fit was achieved with the Langmuir isotherm model. The specific surface area (SBET) of the subgleba was very low; porosity and SBET were increased by (FeAl)2O3-APTES deposition onto SCPC, indicating the formation of porous metal oxides deposits. This modification contributed to a significant increase in adsorption capacity.
PB  - Faculty of Technology Leskovac
C3  - Book of Abstracts - 14th Symposium Novel Technologies and Economic Development, 22th-23th October 2021, Leskovac, Serbia
T1  - Structurally modified three-dimensionally ordered (3DOM) alumina linked to subgleba of Handkea utriformis for Pb2+ removal
SP  - 110
EP  - 110
UR  - https://hdl.handle.net/21.15107/rcub_cer_6472
ER  - 

@conference{
author = "Milošević, Dragana and Milošević, Milena and Perendija, Jovana and Milovanović, Željka and Petrović, Predrag and Marinković, Aleksandar and Petrović, Rada",
year = "2021",
abstract = "Water pollution is a consequence of permanent technological development, urbanization and industrialization, having a huge impact on human health and the environment. Thus, metal oxides received considerable scientific interest in the field of adsorption to reduce heavy metal contamination from water and wastewater. Three-dimensionally ordered macroporous (3DOM) alumina modified with iron oxide and (3-aminopropyl)triethoxysilane (APTES) ((FeAl)2O3-APTES) was synthesized and linked with subgleba of Handkea utriformis (S) through 3-(Carbomethoxy)propionyl chloride (CPC). Surface hydroxyl groups of metal oxides have an affinity for cations while the introduction of amino groups in (FeAl)2O3-APTES allows the creation of covalent attachment on subgleba. Subglebal tissue of mosaic puffball Handkea utriformis contains sugars, proteins and melanins i.e. a large number of functional groups that could interact with an adsorbate. The obtained adsorbent (SCPC-(FeAl)2O3-APTES) was used for Pb2+ removal from aqueous solutions under batch conditions, constant initial concentration of adsorbate and pH and different concentrations of the adsorbent. Composition and surface morphology were characterized by using FT-IR and  SEM analysis. Concentrations of Pb2+, before and after adsorption, were determined by using Atomic Absorption Spectroscopy (AAS). The nonlinear Langmuir and Freundlich isotherm models were evaluated to correlate experimental data in which best fit was achieved with the Langmuir isotherm model. The specific surface area (SBET) of the subgleba was very low; porosity and SBET were increased by (FeAl)2O3-APTES deposition onto SCPC, indicating the formation of porous metal oxides deposits. This modification contributed to a significant increase in adsorption capacity.",
publisher = "Faculty of Technology Leskovac",
journal = "Book of Abstracts - 14th Symposium Novel Technologies and Economic Development, 22th-23th October 2021, Leskovac, Serbia",
title = "Structurally modified three-dimensionally ordered (3DOM) alumina linked to subgleba of Handkea utriformis for Pb2+ removal",
pages = "110-110",
url = "https://hdl.handle.net/21.15107/rcub_cer_6472"
}

Milošević, D., Milošević, M., Perendija, J., Milovanović, Ž., Petrović, P., Marinković, A.,& Petrović, R.. (2021). Structurally modified three-dimensionally ordered (3DOM) alumina linked to subgleba of Handkea utriformis for Pb2+ removal. in Book of Abstracts - 14th Symposium Novel Technologies and Economic Development, 22th-23th October 2021, Leskovac, Serbia
Faculty of Technology Leskovac., 110-110.
https://hdl.handle.net/21.15107/rcub_cer_6472

Milošević D, Milošević M, Perendija J, Milovanović Ž, Petrović P, Marinković A, Petrović R. Structurally modified three-dimensionally ordered (3DOM) alumina linked to subgleba of Handkea utriformis for Pb2+ removal. in Book of Abstracts - 14th Symposium Novel Technologies and Economic Development, 22th-23th October 2021, Leskovac, Serbia. 2021;:110-110.
https://hdl.handle.net/21.15107/rcub_cer_6472 .

Milošević, Dragana, Milošević, Milena, Perendija, Jovana, Milovanović, Željka, Petrović, Predrag, Marinković, Aleksandar, Petrović, Rada, "Structurally modified three-dimensionally ordered (3DOM) alumina linked to subgleba of Handkea utriformis for Pb2+ removal" in Book of Abstracts - 14th Symposium Novel Technologies and Economic Development, 22th-23th October 2021, Leskovac, Serbia (2021):110-110,
https://hdl.handle.net/21.15107/rcub_cer_6472 .

TY  - JOUR
AU  - Popović, Slađana
AU  - Krizmanić, Jelena
AU  - Vidaković, Danijela
AU  - Karadžić, Vesna
AU  - Milovanović, Željka
AU  - Pećić, Marija
AU  - Subakov Simić, Gordana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4025
AB  - Domination of certain aerophytic phototrophic group or specific taxon in biofilms is connected with biofilm features recognised in situ. Well-developed, gelatinous, olive to dark-green biofilms are composed mostly of coccoid cyanobacterial forms. The same features, characterised biofilms dominated by one coccoid taxon, except the latter were vividly coloured. Gloeobacter caused the appearance of purple, Gloeocapsa representatives yellow and Chroococcidiopsis black biofilm. The brown to the dark colour of heterocytous biofilms was mainly caused by Nostoc. Simple trichal Cyanobacteria were occasionally present in biofilm, except in one blue-coloured sample. According to the principal component analysis (PCA), well-developed and gelatinous biofilms were correlated with Cyanobacteria, while scanning electron microscopy (SEM) revealed richness of extracellular polymeric substances (EPS) in such biofilms. Biofilm with calcified cyanobacterium (Geitleria cf. calcarea) was also found. Chlorophyta-abundant biofilms (many rich in Desmococcus), thinner than cyanobacterial, were predominantly green and occasionally yellow and blue. Many were dry when observed in situ (confirmed with PCA), with few being moistened (i.e. Klebsormidium-dominant). Diatom biofilms were usually developed on sediment, mosses or near seeping water (demonstrated by PCA) and were also thinner than cyanobacterial ones. Compared to cyanobacterial biofilms, SEM showed less developed EPS in those rich in diatoms and green algae, where microorganisms are more exposed to the environment. The study demonstrates an easy method for biofilm assessment based on visual characterisation and provides encouragement for more frequent biofilm investigation in caves that can be important from an ecological, biological, biotechnological point of view and which assessment can have an irreplaceable role in potential monitoring and protection.
PB  - Springer Science and Business Media LLC
T2  - Environmental Monitoring and Assessment
T1  - Biofilms in caves: easy method for the assessment of dominant phototrophic groups/taxa in situ
VL  - 192
IS  - 11
SP  - 720
DO  - 10.1007/s10661-020-08686-4
ER  - 

@article{
author = "Popović, Slađana and Krizmanić, Jelena and Vidaković, Danijela and Karadžić, Vesna and Milovanović, Željka and Pećić, Marija and Subakov Simić, Gordana",
year = "2020",
abstract = "Domination of certain aerophytic phototrophic group or specific taxon in biofilms is connected with biofilm features recognised in situ. Well-developed, gelatinous, olive to dark-green biofilms are composed mostly of coccoid cyanobacterial forms. The same features, characterised biofilms dominated by one coccoid taxon, except the latter were vividly coloured. Gloeobacter caused the appearance of purple, Gloeocapsa representatives yellow and Chroococcidiopsis black biofilm. The brown to the dark colour of heterocytous biofilms was mainly caused by Nostoc. Simple trichal Cyanobacteria were occasionally present in biofilm, except in one blue-coloured sample. According to the principal component analysis (PCA), well-developed and gelatinous biofilms were correlated with Cyanobacteria, while scanning electron microscopy (SEM) revealed richness of extracellular polymeric substances (EPS) in such biofilms. Biofilm with calcified cyanobacterium (Geitleria cf. calcarea) was also found. Chlorophyta-abundant biofilms (many rich in Desmococcus), thinner than cyanobacterial, were predominantly green and occasionally yellow and blue. Many were dry when observed in situ (confirmed with PCA), with few being moistened (i.e. Klebsormidium-dominant). Diatom biofilms were usually developed on sediment, mosses or near seeping water (demonstrated by PCA) and were also thinner than cyanobacterial ones. Compared to cyanobacterial biofilms, SEM showed less developed EPS in those rich in diatoms and green algae, where microorganisms are more exposed to the environment. The study demonstrates an easy method for biofilm assessment based on visual characterisation and provides encouragement for more frequent biofilm investigation in caves that can be important from an ecological, biological, biotechnological point of view and which assessment can have an irreplaceable role in potential monitoring and protection.",
publisher = "Springer Science and Business Media LLC",
journal = "Environmental Monitoring and Assessment",
title = "Biofilms in caves: easy method for the assessment of dominant phototrophic groups/taxa in situ",
volume = "192",
number = "11",
pages = "720",
doi = "10.1007/s10661-020-08686-4"
}

Popović, S., Krizmanić, J., Vidaković, D., Karadžić, V., Milovanović, Ž., Pećić, M.,& Subakov Simić, G.. (2020). Biofilms in caves: easy method for the assessment of dominant phototrophic groups/taxa in situ. in Environmental Monitoring and Assessment
Springer Science and Business Media LLC., 192(11), 720.
https://doi.org/10.1007/s10661-020-08686-4

Popović S, Krizmanić J, Vidaković D, Karadžić V, Milovanović Ž, Pećić M, Subakov Simić G. Biofilms in caves: easy method for the assessment of dominant phototrophic groups/taxa in situ. in Environmental Monitoring and Assessment. 2020;192(11):720.
doi:10.1007/s10661-020-08686-4 .

Popović, Slađana, Krizmanić, Jelena, Vidaković, Danijela, Karadžić, Vesna, Milovanović, Željka, Pećić, Marija, Subakov Simić, Gordana, "Biofilms in caves: easy method for the assessment of dominant phototrophic groups/taxa in situ" in Environmental Monitoring and Assessment, 192, no. 11 (2020):720,
https://doi.org/10.1007/s10661-020-08686-4 . .

TY  - JOUR
AU  - Milovanović, Željka
AU  - Popović, Slađana
AU  - Pantelić, Ana
AU  - Milinkov, Jelena R.
AU  - Milošević, Dragana L.
AU  - Petrović, Vladimir M.
AU  - Vidović, Milka
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3931
AB  - The ionic content was examined in nine aqueous tea extracts in which time of boiling, acidification of the medium using lemon juice and way of preparation were observed as factors. Ion chromatography was used for determination of inorganic anion content, and data were processed using CANOCO program for multivariate analysis. The variations in ionic content were observed among different tea samples. The highest concentrations of chloride, nitrate, phosphate, and sulphate ions were found in nettle, while the highest concentrations of fluorides were detected in elderflower tea infusion. The effect of boiling time (5, 10, and 20 min), acidification of the medium and different preparation procedure (boiling and cooling at room temperature) were statistically presented using principal component analysis. The examined factors did not have a significant effect on the ionic concentration in tea infusions.
AB  - Јонски садржај испитиван је код девет водених раствора чаја, при чему је на екстракцију јона посматран утицај дужине кувања, киселости средине (која је постигнута додатком лимуновог сока) и начинa припреме. Јонска хроматографија коришћена је за одређивање садржаја неорганских анјона, а пoдаци су обрађени помоћу Canoco програма за мултиваријациону анализу. Јонски садржај варира код различитих узорака чаја. Највеће концентрације хлоридних, нитратних, фосфатних и сулфатних јона одређене су у коприви, док су највеће концентрације флуорида одређене у инфузији кантариона. Утицај времена кључања (5, 10 и 20 мин.), киселост медијума и различити начини припреме (кључање и хлађење на собној температури) статистички су приказани помоћу анализе главних компоненти. Испитивани фактори нису имали значајан утицај на јонску концентрацију у чајним инфузијама.
PB  - Serbia : Matica srpska
T2  - Zbornik Matice Srpske za Prirodne Nauke
T1  - Determination of inorganic anions in herbal tea infusions using ion chromatography
T1  - Određivanje neorganskih jona u rastvoru biljnih čajeva jonskom hromatografijom
IS  - 134
SP  - 89
EP  - 99
DO  - 10.2298/ZMSPN1834089M
ER  - 

@article{
author = "Milovanović, Željka and Popović, Slađana and Pantelić, Ana and Milinkov, Jelena R. and Milošević, Dragana L. and Petrović, Vladimir M. and Vidović, Milka",
year = "2018",
abstract = "The ionic content was examined in nine aqueous tea extracts in which time of boiling, acidification of the medium using lemon juice and way of preparation were observed as factors. Ion chromatography was used for determination of inorganic anion content, and data were processed using CANOCO program for multivariate analysis. The variations in ionic content were observed among different tea samples. The highest concentrations of chloride, nitrate, phosphate, and sulphate ions were found in nettle, while the highest concentrations of fluorides were detected in elderflower tea infusion. The effect of boiling time (5, 10, and 20 min), acidification of the medium and different preparation procedure (boiling and cooling at room temperature) were statistically presented using principal component analysis. The examined factors did not have a significant effect on the ionic concentration in tea infusions., Јонски садржај испитиван је код девет водених раствора чаја, при чему је на екстракцију јона посматран утицај дужине кувања, киселости средине (која је постигнута додатком лимуновог сока) и начинa припреме. Јонска хроматографија коришћена је за одређивање садржаја неорганских анјона, а пoдаци су обрађени помоћу Canoco програма за мултиваријациону анализу. Јонски садржај варира код различитих узорака чаја. Највеће концентрације хлоридних, нитратних, фосфатних и сулфатних јона одређене су у коприви, док су највеће концентрације флуорида одређене у инфузији кантариона. Утицај времена кључања (5, 10 и 20 мин.), киселост медијума и различити начини припреме (кључање и хлађење на собној температури) статистички су приказани помоћу анализе главних компоненти. Испитивани фактори нису имали значајан утицај на јонску концентрацију у чајним инфузијама.",
publisher = "Serbia : Matica srpska",
journal = "Zbornik Matice Srpske za Prirodne Nauke",
title = "Determination of inorganic anions in herbal tea infusions using ion chromatography, Određivanje neorganskih jona u rastvoru biljnih čajeva jonskom hromatografijom",
number = "134",
pages = "89-99",
doi = "10.2298/ZMSPN1834089M"
}

Milovanović, Ž., Popović, S., Pantelić, A., Milinkov, J. R., Milošević, D. L., Petrović, V. M.,& Vidović, M.. (2018). Determination of inorganic anions in herbal tea infusions using ion chromatography. in Zbornik Matice Srpske za Prirodne Nauke
Serbia : Matica srpska.(134), 89-99.
https://doi.org/10.2298/ZMSPN1834089M

Milovanović Ž, Popović S, Pantelić A, Milinkov JR, Milošević DL, Petrović VM, Vidović M. Determination of inorganic anions in herbal tea infusions using ion chromatography. in Zbornik Matice Srpske za Prirodne Nauke. 2018;(134):89-99.
doi:10.2298/ZMSPN1834089M .

Milovanović, Željka, Popović, Slađana, Pantelić, Ana, Milinkov, Jelena R., Milošević, Dragana L., Petrović, Vladimir M., Vidović, Milka, "Determination of inorganic anions in herbal tea infusions using ion chromatography" in Zbornik Matice Srpske za Prirodne Nauke, no. 134 (2018):89-99,
https://doi.org/10.2298/ZMSPN1834089M . .

TY  - JOUR
AU  - Popović, Slađana
AU  - Pantelić, Ana
AU  - Milovanović, Željka
AU  - Milinkov, J.
AU  - Vidović, Milka
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2211
AB  - The concentrations of iron, zinc, manganese, copper, chromium, nickel, lead, arsenic, and cadmium were determined using flame and graphite furnace atomic absorption spectrometry in nine herbal tea samples. Hawthorn, yarrow, elderflower, and bearberry are herbal teas for which the metal content has been rarely determined. The concentration of cadmium in St John’s wort exceeded the maximum permissible limit of 0.3 mg/kg. The metals were also determined in aqueous extracts following 5, 10, and 20 min of boiling and using different preparations, including acidification with lemon juice. The influence of these factors on metal release was demonstrated using multivariate analyses by redundancy analysis and principal component analysis. The metal release was not considerably affected by the boiling time, while the acidity of the medium was generally positively correlated. For the infusions, arsenic was detected only in acidified mint tea. The extraction efficiencies of metals were determined and classified as highly, moderately, and poorly extractable, with chromium showing largest variations.
PB  - Taylor and Francis Inc.
T2  - Analytical Letters
T1  - Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis
VL  - 50
IS  - 16
SP  - 2619
EP  - 2633
DO  - 10.1080/00032719.2017.1307849
ER  - 

@article{
author = "Popović, Slađana and Pantelić, Ana and Milovanović, Željka and Milinkov, J. and Vidović, Milka",
year = "2017",
abstract = "The concentrations of iron, zinc, manganese, copper, chromium, nickel, lead, arsenic, and cadmium were determined using flame and graphite furnace atomic absorption spectrometry in nine herbal tea samples. Hawthorn, yarrow, elderflower, and bearberry are herbal teas for which the metal content has been rarely determined. The concentration of cadmium in St John’s wort exceeded the maximum permissible limit of 0.3 mg/kg. The metals were also determined in aqueous extracts following 5, 10, and 20 min of boiling and using different preparations, including acidification with lemon juice. The influence of these factors on metal release was demonstrated using multivariate analyses by redundancy analysis and principal component analysis. The metal release was not considerably affected by the boiling time, while the acidity of the medium was generally positively correlated. For the infusions, arsenic was detected only in acidified mint tea. The extraction efficiencies of metals were determined and classified as highly, moderately, and poorly extractable, with chromium showing largest variations.",
publisher = "Taylor and Francis Inc.",
journal = "Analytical Letters",
title = "Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis",
volume = "50",
number = "16",
pages = "2619-2633",
doi = "10.1080/00032719.2017.1307849"
}

Popović, S., Pantelić, A., Milovanović, Ž., Milinkov, J.,& Vidović, M.. (2017). Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis. in Analytical Letters
Taylor and Francis Inc.., 50(16), 2619-2633.
https://doi.org/10.1080/00032719.2017.1307849

Popović S, Pantelić A, Milovanović Ž, Milinkov J, Vidović M. Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis. in Analytical Letters. 2017;50(16):2619-2633.
doi:10.1080/00032719.2017.1307849 .

Popović, Slađana, Pantelić, Ana, Milovanović, Željka, Milinkov, J., Vidović, Milka, "Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis" in Analytical Letters, 50, no. 16 (2017):2619-2633,
https://doi.org/10.1080/00032719.2017.1307849 . .

TY  - JOUR
AU  - Popović, Slađana
AU  - Pantelić, Ana
AU  - Milovanović, Željka
AU  - Milinkov, J.
AU  - Vidović, Milka
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3065
AB  - The concentrations of iron, zinc, manganese, copper, chromium, nickel, lead, arsenic, and cadmium were determined using flame and graphite furnace atomic absorption spectrometry in nine herbal tea samples. Hawthorn, yarrow, elderflower, and bearberry are herbal teas for which the metal content has been rarely determined. The concentration of cadmium in St John’s wort exceeded the maximum permissible limit of 0.3 mg/kg. The metals were also determined in aqueous extracts following 5, 10, and 20 min of boiling and using different preparations, including acidification with lemon juice. The influence of these factors on metal release was demonstrated using multivariate analyses by redundancy analysis and principal component analysis. The metal release was not considerably affected by the boiling time, while the acidity of the medium was generally positively correlated. For the infusions, arsenic was detected only in acidified mint tea. The extraction efficiencies of metals were determined and classified as highly, moderately, and poorly extractable, with chromium showing largest variations.
PB  - Taylor and Francis Inc.
T2  - Analytical Letters
T1  - Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis
VL  - 50
IS  - 16
SP  - 2619
EP  - 2633
DO  - 10.1080/00032719.2017.1307849
ER  - 

@article{
author = "Popović, Slađana and Pantelić, Ana and Milovanović, Željka and Milinkov, J. and Vidović, Milka",
year = "2017",
abstract = "The concentrations of iron, zinc, manganese, copper, chromium, nickel, lead, arsenic, and cadmium were determined using flame and graphite furnace atomic absorption spectrometry in nine herbal tea samples. Hawthorn, yarrow, elderflower, and bearberry are herbal teas for which the metal content has been rarely determined. The concentration of cadmium in St John’s wort exceeded the maximum permissible limit of 0.3 mg/kg. The metals were also determined in aqueous extracts following 5, 10, and 20 min of boiling and using different preparations, including acidification with lemon juice. The influence of these factors on metal release was demonstrated using multivariate analyses by redundancy analysis and principal component analysis. The metal release was not considerably affected by the boiling time, while the acidity of the medium was generally positively correlated. For the infusions, arsenic was detected only in acidified mint tea. The extraction efficiencies of metals were determined and classified as highly, moderately, and poorly extractable, with chromium showing largest variations.",
publisher = "Taylor and Francis Inc.",
journal = "Analytical Letters",
title = "Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis",
volume = "50",
number = "16",
pages = "2619-2633",
doi = "10.1080/00032719.2017.1307849"
}

Popović, S., Pantelić, A., Milovanović, Ž., Milinkov, J.,& Vidović, M.. (2017). Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis. in Analytical Letters
Taylor and Francis Inc.., 50(16), 2619-2633.
https://doi.org/10.1080/00032719.2017.1307849

Popović S, Pantelić A, Milovanović Ž, Milinkov J, Vidović M. Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis. in Analytical Letters. 2017;50(16):2619-2633.
doi:10.1080/00032719.2017.1307849 .

Popović, Slađana, Pantelić, Ana, Milovanović, Željka, Milinkov, J., Vidović, Milka, "Analysis of Tea for Metals by Flame and Graphite Furnace Atomic Absorption Spectrometry with Multivariate Analysis" in Analytical Letters, 50, no. 16 (2017):2619-2633,
https://doi.org/10.1080/00032719.2017.1307849 . .

TY  - CONF
AU  - Vidović, Milka
AU  - Jovanić, Sanja
AU  - Trajković, Ivana
AU  - Gotovina, Željka
AU  - Pantelić, Ana
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7150
AB  - Pri emisiji otpadnih voda u vodotokove dolazi do formiranja biološkog reaktora, u kome se odvijaju procesi razblaženja i samoprečišćavanja. Stepen razblaženja zavisi od odnosa protoka vode u vodotoku i količine otpadnih voda, a razmatranja procesa samoprečišćavanja fokusirana su na bilans kiseonika, pa se iz tih razloga ovaj parametar obavezno prati u donošenju mera sanitacije vodotoka. Na osnovu analitičkih metoda za određivanje biološke potrošnje kiseonika teško se može sagledati kinetika biorazgradnje i odrediti potrebni kinetički parametri za procese samoprečišćavanja otpadnih voda. Iz tih razloga u ovom radu prikazana je primena nekih od najčešćih modela u literaturi, a koji se koriste u cilju određivanja koeficijenta biorazgradnje. Grafički predstavljeni rezultati i izračunate vrednosti koeficijenata biorazgradnje ukazuju da su metod najmanjeg kvadrata, Fujimoto metod i Thomas metod, modeli koje se mogu na efikasan način primeniti na konkretnu metodu pri laboratorijskom određivanju.
AB  - Wastewater emissions into watercourses lead to the biological reactor’s formation, in which the processes of dilution and self-purification occured. The degree of dilution depends on the ratio of the stream water flow and wastewater volume, and considerations of the self-purification processes are focused on the oxygen balance, and for these reasons this parameter is due to be monitored in adoption of remedial measures. Based on the analytical methods for the determination of biological oxygen demand, it is difficult to consider the kinetic of biodegradation and determine the kinetic parameters required for the processes of self-purification of wastewater. Therefore, in this paper the application of some of the most common models that are available in the literature are presented, which are used in order to determine the coefficient of biodegradation. Graphically presented results and the calculated values of the coefficients of biodegradation indicate that the method of least squares, Fujimoto method and Thomas method, are models that can be efficiently applied to a specific method in the laboratory testing.
PB  - Udruženje za tehnologiju vode i sanitarno inženjerstvo / Association for water technology and sanitary engineering
C3  - Zbornik radova - Sedmi međunarodni kongres Ekologija, zdravlje, sport
T1  - Određivanje koeficijenta biorazgradnje otpadnih voda
T1  - Determination of coefficient of biodegardation for wastewater
SP  - 150
EP  - 154
UR  - https://hdl.handle.net/21.15107/rcub_cer_7150
ER  - 

@conference{
author = "Vidović, Milka and Jovanić, Sanja and Trajković, Ivana and Gotovina, Željka and Pantelić, Ana",
year = "2015",
abstract = "Pri emisiji otpadnih voda u vodotokove dolazi do formiranja biološkog reaktora, u kome se odvijaju procesi razblaženja i samoprečišćavanja. Stepen razblaženja zavisi od odnosa protoka vode u vodotoku i količine otpadnih voda, a razmatranja procesa samoprečišćavanja fokusirana su na bilans kiseonika, pa se iz tih razloga ovaj parametar obavezno prati u donošenju mera sanitacije vodotoka. Na osnovu analitičkih metoda za određivanje biološke potrošnje kiseonika teško se može sagledati kinetika biorazgradnje i odrediti potrebni kinetički parametri za procese samoprečišćavanja otpadnih voda. Iz tih razloga u ovom radu prikazana je primena nekih od najčešćih modela u literaturi, a koji se koriste u cilju određivanja koeficijenta biorazgradnje. Grafički predstavljeni rezultati i izračunate vrednosti koeficijenata biorazgradnje ukazuju da su metod najmanjeg kvadrata, Fujimoto metod i Thomas metod, modeli koje se mogu na efikasan način primeniti na konkretnu metodu pri laboratorijskom određivanju., Wastewater emissions into watercourses lead to the biological reactor’s formation, in which the processes of dilution and self-purification occured. The degree of dilution depends on the ratio of the stream water flow and wastewater volume, and considerations of the self-purification processes are focused on the oxygen balance, and for these reasons this parameter is due to be monitored in adoption of remedial measures. Based on the analytical methods for the determination of biological oxygen demand, it is difficult to consider the kinetic of biodegradation and determine the kinetic parameters required for the processes of self-purification of wastewater. Therefore, in this paper the application of some of the most common models that are available in the literature are presented, which are used in order to determine the coefficient of biodegradation. Graphically presented results and the calculated values of the coefficients of biodegradation indicate that the method of least squares, Fujimoto method and Thomas method, are models that can be efficiently applied to a specific method in the laboratory testing.",
publisher = "Udruženje za tehnologiju vode i sanitarno inženjerstvo / Association for water technology and sanitary engineering",
journal = "Zbornik radova - Sedmi međunarodni kongres Ekologija, zdravlje, sport",
title = "Određivanje koeficijenta biorazgradnje otpadnih voda, Determination of coefficient of biodegardation for wastewater",
pages = "150-154",
url = "https://hdl.handle.net/21.15107/rcub_cer_7150"
}

Vidović, M., Jovanić, S., Trajković, I., Gotovina, Ž.,& Pantelić, A.. (2015). Određivanje koeficijenta biorazgradnje otpadnih voda. in Zbornik radova - Sedmi međunarodni kongres Ekologija, zdravlje, sport
Udruženje za tehnologiju vode i sanitarno inženjerstvo / Association for water technology and sanitary engineering., 150-154.
https://hdl.handle.net/21.15107/rcub_cer_7150

Vidović M, Jovanić S, Trajković I, Gotovina Ž, Pantelić A. Određivanje koeficijenta biorazgradnje otpadnih voda. in Zbornik radova - Sedmi međunarodni kongres Ekologija, zdravlje, sport. 2015;:150-154.
https://hdl.handle.net/21.15107/rcub_cer_7150 .

Vidović, Milka, Jovanić, Sanja, Trajković, Ivana, Gotovina, Željka, Pantelić, Ana, "Određivanje koeficijenta biorazgradnje otpadnih voda" in Zbornik radova - Sedmi međunarodni kongres Ekologija, zdravlje, sport (2015):150-154,
https://hdl.handle.net/21.15107/rcub_cer_7150 .

TY  - CONF
AU  - Vidović, Milka
AU  - Jovanić, Sanja
AU  - Trajković, Ivana
AU  - Ćirić, Miloš
AU  - Gotovina, Željka
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7265
AB  - u laboratorijskim uslovima, teško se može sagledati kinetika biorazgradnje i odrediti potrebni kinetički parametri za projektovanje postrojenja za prečišćavanje otpadnih voda. Iz tih razloga u ovom radu prikazana je primena nekih od modela koji su najčešće dostupni u literaturi, a koriste se u cilju određivanja koeficijenta biorazgradnje. Grafički predstavljeni rezultati i izračunate vrednosti koeficijenata biorazgradnje ukazuju da su metod najmanjeg kvadrata, Fujimoto metod i Thomas metod, metode koje se mogu na efikasan način primeniti na konkretnu metodu pri laboratorijskom određivanju.
PB  - Udruženje za tehnologiju vode i sanitarno inženjerstvo / Association for water technology and sanitary engineering
C3  - Međunarodna konferencija „Otpadne vode, komunalni čvrsti otpad i opasan otpad“, 21-23 April 2015, Budva, Montenegro / International conference "Waste waters, municipal solid waste and hazardous wastes", 21-23 april 2015, Budva
T1  - Efikasnost primene modela određivanja koeficijenta biorazgradnje otpadnih voda
T1  - Efficiency of the model application to determine the coefficient of biodegradation of wastewater
SP  - 77
EP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_cer_7265
ER  - 

@conference{
author = "Vidović, Milka and Jovanić, Sanja and Trajković, Ivana and Ćirić, Miloš and Gotovina, Željka",
year = "2015",
abstract = "u laboratorijskim uslovima, teško se može sagledati kinetika biorazgradnje i odrediti potrebni kinetički parametri za projektovanje postrojenja za prečišćavanje otpadnih voda. Iz tih razloga u ovom radu prikazana je primena nekih od modela koji su najčešće dostupni u literaturi, a koriste se u cilju određivanja koeficijenta biorazgradnje. Grafički predstavljeni rezultati i izračunate vrednosti koeficijenata biorazgradnje ukazuju da su metod najmanjeg kvadrata, Fujimoto metod i Thomas metod, metode koje se mogu na efikasan način primeniti na konkretnu metodu pri laboratorijskom određivanju.",
publisher = "Udruženje za tehnologiju vode i sanitarno inženjerstvo / Association for water technology and sanitary engineering",
journal = "Međunarodna konferencija „Otpadne vode, komunalni čvrsti otpad i opasan otpad“, 21-23 April 2015, Budva, Montenegro / International conference "Waste waters, municipal solid waste and hazardous wastes", 21-23 april 2015, Budva",
title = "Efikasnost primene modela određivanja koeficijenta biorazgradnje otpadnih voda, Efficiency of the model application to determine the coefficient of biodegradation of wastewater",
pages = "77-83",
url = "https://hdl.handle.net/21.15107/rcub_cer_7265"
}

Vidović, M., Jovanić, S., Trajković, I., Ćirić, M.,& Gotovina, Ž.. (2015). Efikasnost primene modela određivanja koeficijenta biorazgradnje otpadnih voda. in Međunarodna konferencija „Otpadne vode, komunalni čvrsti otpad i opasan otpad“, 21-23 April 2015, Budva, Montenegro / International conference "Waste waters, municipal solid waste and hazardous wastes", 21-23 april 2015, Budva
Udruženje za tehnologiju vode i sanitarno inženjerstvo / Association for water technology and sanitary engineering., 77-83.
https://hdl.handle.net/21.15107/rcub_cer_7265

Vidović M, Jovanić S, Trajković I, Ćirić M, Gotovina Ž. Efikasnost primene modela određivanja koeficijenta biorazgradnje otpadnih voda. in Međunarodna konferencija „Otpadne vode, komunalni čvrsti otpad i opasan otpad“, 21-23 April 2015, Budva, Montenegro / International conference "Waste waters, municipal solid waste and hazardous wastes", 21-23 april 2015, Budva. 2015;:77-83.
https://hdl.handle.net/21.15107/rcub_cer_7265 .

Vidović, Milka, Jovanić, Sanja, Trajković, Ivana, Ćirić, Miloš, Gotovina, Željka, "Efikasnost primene modela određivanja koeficijenta biorazgradnje otpadnih voda" in Međunarodna konferencija „Otpadne vode, komunalni čvrsti otpad i opasan otpad“, 21-23 April 2015, Budva, Montenegro / International conference "Waste waters, municipal solid waste and hazardous wastes", 21-23 april 2015, Budva (2015):77-83,
https://hdl.handle.net/21.15107/rcub_cer_7265 .