TY  - JOUR
AU  - Đurđić, Slađana
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Gemeiner, Pavol
AU  - Sarakhman, Olha
AU  - Stanković, Vesna
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
AU  - Švorc, Lubomír
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7424
AB  - In the present work, a nanocomposite, based on embedding Co-doped CeO2 nanoparticles into graphitic carbon nitride (g-C3N4), was applied to functionalize commercial glassy carbon paste. This is the first application of the electrochemical sensor, developed through the proposed procedure, in electrochemical sensing. The sensor was utilized for the electrochemical determination of organophosphate pesticide fenitrothion (FNT). Cyclic voltammetry identified reversible oxidation of FNT (oxidation at 0.18 V and reduction at 0.13 V) and additional reduction at 0.62 V vs. Ag/AgCl in HCl solution (pH =1). Theoretical calculations were carried out to model and elucidate experimentally observed redox processes. Special attention was devoted to modeling experimental conditions, and based on the obtained results, a detailed redox mechanism of the investigated analyte was proposed. This represents the first complete and unambiguous elucidation of the FNT redox mechanism, supported by joined experimental and theoretical data. Square wave voltammetry (SWV) was utilized for quantification, whereby the FNT oxidation peak was chosen for monitoring the analyte concentration. The developed sensor provided a nanomolar detection limit (3.2 nmol L 1), a wide linear concentration range (from 0.01 to 13.7 μmol L 1), and good precision, repeatability, and selectivity towards FNT. Practical application possibility was explored by testing the sensor performance for examining tap water and apple samples. Recovery tests, conducted during the FNT-spiked sample assays, showed a great application capability of the developed sensor for real-time monitoring of FNT traces in environmental samples.
PB  - Elsevier
T2  - Science of The Total Environment
T1  - Nano-size cobalt-doped cerium oxide particles embedded into graphitic carbon nitride for enhanced electrochemical sensing of insecticide fenitrothion in environmental samples: An experimental study with the theoretical elucidation of redox events
VL  - 909
SP  - 168483
DO  - 10.1016/j.scitotenv.2023.168483
ER  - 

@article{
author = "Đurđić, Slađana and Vlahović, Filip and Ognjanović, Miloš and Gemeiner, Pavol and Sarakhman, Olha and Stanković, Vesna and Mutić, Jelena and Stanković, Dalibor and Švorc, Lubomír",
year = "2024",
abstract = "In the present work, a nanocomposite, based on embedding Co-doped CeO2 nanoparticles into graphitic carbon nitride (g-C3N4), was applied to functionalize commercial glassy carbon paste. This is the first application of the electrochemical sensor, developed through the proposed procedure, in electrochemical sensing. The sensor was utilized for the electrochemical determination of organophosphate pesticide fenitrothion (FNT). Cyclic voltammetry identified reversible oxidation of FNT (oxidation at 0.18 V and reduction at 0.13 V) and additional reduction at 0.62 V vs. Ag/AgCl in HCl solution (pH =1). Theoretical calculations were carried out to model and elucidate experimentally observed redox processes. Special attention was devoted to modeling experimental conditions, and based on the obtained results, a detailed redox mechanism of the investigated analyte was proposed. This represents the first complete and unambiguous elucidation of the FNT redox mechanism, supported by joined experimental and theoretical data. Square wave voltammetry (SWV) was utilized for quantification, whereby the FNT oxidation peak was chosen for monitoring the analyte concentration. The developed sensor provided a nanomolar detection limit (3.2 nmol L 1), a wide linear concentration range (from 0.01 to 13.7 μmol L 1), and good precision, repeatability, and selectivity towards FNT. Practical application possibility was explored by testing the sensor performance for examining tap water and apple samples. Recovery tests, conducted during the FNT-spiked sample assays, showed a great application capability of the developed sensor for real-time monitoring of FNT traces in environmental samples.",
publisher = "Elsevier",
journal = "Science of The Total Environment",
title = "Nano-size cobalt-doped cerium oxide particles embedded into graphitic carbon nitride for enhanced electrochemical sensing of insecticide fenitrothion in environmental samples: An experimental study with the theoretical elucidation of redox events",
volume = "909",
pages = "168483",
doi = "10.1016/j.scitotenv.2023.168483"
}

Đurđić, S., Vlahović, F., Ognjanović, M., Gemeiner, P., Sarakhman, O., Stanković, V., Mutić, J., Stanković, D.,& Švorc, L.. (2024). Nano-size cobalt-doped cerium oxide particles embedded into graphitic carbon nitride for enhanced electrochemical sensing of insecticide fenitrothion in environmental samples: An experimental study with the theoretical elucidation of redox events. in Science of The Total Environment
Elsevier., 909, 168483.
https://doi.org/10.1016/j.scitotenv.2023.168483

Đurđić S, Vlahović F, Ognjanović M, Gemeiner P, Sarakhman O, Stanković V, Mutić J, Stanković D, Švorc L. Nano-size cobalt-doped cerium oxide particles embedded into graphitic carbon nitride for enhanced electrochemical sensing of insecticide fenitrothion in environmental samples: An experimental study with the theoretical elucidation of redox events. in Science of The Total Environment. 2024;909:168483.
doi:10.1016/j.scitotenv.2023.168483 .

Đurđić, Slađana, Vlahović, Filip, Ognjanović, Miloš, Gemeiner, Pavol, Sarakhman, Olha, Stanković, Vesna, Mutić, Jelena, Stanković, Dalibor, Švorc, Lubomír, "Nano-size cobalt-doped cerium oxide particles embedded into graphitic carbon nitride for enhanced electrochemical sensing of insecticide fenitrothion in environmental samples: An experimental study with the theoretical elucidation of redox events" in Science of The Total Environment, 909 (2024):168483,
https://doi.org/10.1016/j.scitotenv.2023.168483 . .

TY  - JOUR
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Đurđić, Slađana
AU  - Kukuzar, Andrej
AU  - Antić, Bratislav
AU  - Dojčinović, Biljana
AU  - Stanković, Dalibor
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6361
AB  - We have set-up an electrochemical advanced oxidation process for ethidium bromide (1), based on the Eu-doped MnWO4 (Eu:MnWO4), obtained through a template-driven synthesis, along with developing a suitable monitoring method. Under galvanostatic conditions, Eu:MnWO4-coated graphite electrode serves as anode, applicable for removal of 1. To go further and augment the catalytic method, we have applied a modified carbon paste electrode for the monitoring of 1 with the limit of detection (LOD) of 54 nM. Enhancement of the hydrogen evolution reaction is an indication of electrocatalytic properties of the material, whereby developed method emerges as a candidate for straightforward application in electrochemical advanced oxidation processes (EAOPs). We have enriched experimental data with theoretical insights, provided by Density Functional Theory (DFT), and proposed oxidation mechanism of 1. Based on obtained results, we propose the new nanomaterial as a potent electrochemical modifier, suitable for catalytic treatment and process monitoring of the 1-polluted waters.
PB  - Elsevier
T2  - Applied Catalysis B: Environmental
T1  - Design of an ethidium bromide control circuit supported by deep theoretical insight
VL  - 334
IS  - 122819
DO  - 10.1016/j.apcatb.2023.122819
ER  - 

@article{
author = "Vlahović, Filip and Ognjanović, Miloš and Đurđić, Slađana and Kukuzar, Andrej and Antić, Bratislav and Dojčinović, Biljana and Stanković, Dalibor",
year = "2023",
abstract = "We have set-up an electrochemical advanced oxidation process for ethidium bromide (1), based on the Eu-doped MnWO4 (Eu:MnWO4), obtained through a template-driven synthesis, along with developing a suitable monitoring method. Under galvanostatic conditions, Eu:MnWO4-coated graphite electrode serves as anode, applicable for removal of 1. To go further and augment the catalytic method, we have applied a modified carbon paste electrode for the monitoring of 1 with the limit of detection (LOD) of 54 nM. Enhancement of the hydrogen evolution reaction is an indication of electrocatalytic properties of the material, whereby developed method emerges as a candidate for straightforward application in electrochemical advanced oxidation processes (EAOPs). We have enriched experimental data with theoretical insights, provided by Density Functional Theory (DFT), and proposed oxidation mechanism of 1. Based on obtained results, we propose the new nanomaterial as a potent electrochemical modifier, suitable for catalytic treatment and process monitoring of the 1-polluted waters.",
publisher = "Elsevier",
journal = "Applied Catalysis B: Environmental",
title = "Design of an ethidium bromide control circuit supported by deep theoretical insight",
volume = "334",
number = "122819",
doi = "10.1016/j.apcatb.2023.122819"
}

Vlahović, F., Ognjanović, M., Đurđić, S., Kukuzar, A., Antić, B., Dojčinović, B.,& Stanković, D.. (2023). Design of an ethidium bromide control circuit supported by deep theoretical insight. in Applied Catalysis B: Environmental
Elsevier., 334(122819).
https://doi.org/10.1016/j.apcatb.2023.122819

Vlahović F, Ognjanović M, Đurđić S, Kukuzar A, Antić B, Dojčinović B, Stanković D. Design of an ethidium bromide control circuit supported by deep theoretical insight. in Applied Catalysis B: Environmental. 2023;334(122819).
doi:10.1016/j.apcatb.2023.122819 .

Vlahović, Filip, Ognjanović, Miloš, Đurđić, Slađana, Kukuzar, Andrej, Antić, Bratislav, Dojčinović, Biljana, Stanković, Dalibor, "Design of an ethidium bromide control circuit supported by deep theoretical insight" in Applied Catalysis B: Environmental, 334, no. 122819 (2023),
https://doi.org/10.1016/j.apcatb.2023.122819 . .

TY  - CONF
AU  - Mijajlović, Aleksandar
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Manojlović, Dragan
AU  - Stanković, Dalibor
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7357
AB  - Pesticides have a significant role in the world food chain in the setting of rising agricultural output demand and rising climate change impacts on agricultural productivity. Pesticide contamination across the world is not just a pressing issue; it also has the potential to get worse, for instance, because of movements in global production to nations with laxer environmental regulations [1]. In this work, we have designed a new electrochemical sensor for detecting bentazone (BZT) by using NP-Y2O3/g-C3N4 modified carbon paste electrode (CP). For the first time, the Pechini method was employed to synthesize the Y2O3 nanocomposite. The nanomaterial was characterized by Xray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). In order to create an analytical technique for identifying and measuring BZT, the electrocatalytic characteristics of the suggested Y2O3/g-C3N4 modified CP electrode were examined. Using the CV and DPV approaches, the electrochemical behavior of BZT at the Y2O3/gC3N4 sensor was investigated. The proposed electrochemical sensor exhibited excellent electrochemical response toward BZT with a wide linear range of 1 to 100 µM, with a detection limit of 0.68 µM. The effect of possible interfering agents is negligible, confirming the good selectivity of the method. The sensor also displayed excellent sensitivity, reproducibility, and stability. Additionally, the Y2O3/g-C3N4 sensor was utilized for the detection of BZT in water and soil samples, and also in red and green pepper samples, and it exhibited good recovery results.
PB  - University of Belgrade : Faculty of Chemistry
C3  - 28th Young Investigators' Seminar  on Analytical Chemistry YISAC 2023, Book of Abstracts, June 25th - 28th, 2023, Belgrade, Serbia
T1  - A novel carbon paste electrode modified by NP-Y2O3 doped with the g-C3N4 for sensitive electrochemical detection of herbicide bentazone in river, soil, and vegetable samples
SP  - 26
EP  - 26
UR  - https://hdl.handle.net/21.15107/rcub_cer_7357
ER  - 

@conference{
author = "Mijajlović, Aleksandar and Stanković, Vesna and Đurđić, Slađana and Manojlović, Dragan and Stanković, Dalibor",
year = "2023",
abstract = "Pesticides have a significant role in the world food chain in the setting of rising agricultural output demand and rising climate change impacts on agricultural productivity. Pesticide contamination across the world is not just a pressing issue; it also has the potential to get worse, for instance, because of movements in global production to nations with laxer environmental regulations [1]. In this work, we have designed a new electrochemical sensor for detecting bentazone (BZT) by using NP-Y2O3/g-C3N4 modified carbon paste electrode (CP). For the first time, the Pechini method was employed to synthesize the Y2O3 nanocomposite. The nanomaterial was characterized by Xray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). In order to create an analytical technique for identifying and measuring BZT, the electrocatalytic characteristics of the suggested Y2O3/g-C3N4 modified CP electrode were examined. Using the CV and DPV approaches, the electrochemical behavior of BZT at the Y2O3/gC3N4 sensor was investigated. The proposed electrochemical sensor exhibited excellent electrochemical response toward BZT with a wide linear range of 1 to 100 µM, with a detection limit of 0.68 µM. The effect of possible interfering agents is negligible, confirming the good selectivity of the method. The sensor also displayed excellent sensitivity, reproducibility, and stability. Additionally, the Y2O3/g-C3N4 sensor was utilized for the detection of BZT in water and soil samples, and also in red and green pepper samples, and it exhibited good recovery results.",
publisher = "University of Belgrade : Faculty of Chemistry",
journal = "28th Young Investigators' Seminar  on Analytical Chemistry YISAC 2023, Book of Abstracts, June 25th - 28th, 2023, Belgrade, Serbia",
title = "A novel carbon paste electrode modified by NP-Y2O3 doped with the g-C3N4 for sensitive electrochemical detection of herbicide bentazone in river, soil, and vegetable samples",
pages = "26-26",
url = "https://hdl.handle.net/21.15107/rcub_cer_7357"
}

Mijajlović, A., Stanković, V., Đurđić, S., Manojlović, D.,& Stanković, D.. (2023). A novel carbon paste electrode modified by NP-Y2O3 doped with the g-C3N4 for sensitive electrochemical detection of herbicide bentazone in river, soil, and vegetable samples. in 28th Young Investigators' Seminar  on Analytical Chemistry YISAC 2023, Book of Abstracts, June 25th - 28th, 2023, Belgrade, Serbia
University of Belgrade : Faculty of Chemistry., 26-26.
https://hdl.handle.net/21.15107/rcub_cer_7357

Mijajlović A, Stanković V, Đurđić S, Manojlović D, Stanković D. A novel carbon paste electrode modified by NP-Y2O3 doped with the g-C3N4 for sensitive electrochemical detection of herbicide bentazone in river, soil, and vegetable samples. in 28th Young Investigators' Seminar  on Analytical Chemistry YISAC 2023, Book of Abstracts, June 25th - 28th, 2023, Belgrade, Serbia. 2023;:26-26.
https://hdl.handle.net/21.15107/rcub_cer_7357 .

Mijajlović, Aleksandar, Stanković, Vesna, Đurđić, Slađana, Manojlović, Dragan, Stanković, Dalibor, "A novel carbon paste electrode modified by NP-Y2O3 doped with the g-C3N4 for sensitive electrochemical detection of herbicide bentazone in river, soil, and vegetable samples" in 28th Young Investigators' Seminar  on Analytical Chemistry YISAC 2023, Book of Abstracts, June 25th - 28th, 2023, Belgrade, Serbia (2023):26-26,
https://hdl.handle.net/21.15107/rcub_cer_7357 .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Vlahović, Filip
AU  - Markićević, Milan
AU  - Mutić, Jelena
AU  - Manojlović, Dragan
AU  - Stanković, Vesna
AU  - Švorc, Ľubomír
AU  - Stanković, Dalibor
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5774
AB  - Herein, a screen–printed diamond electrode (SPDE) coupled with a “point-of-care” platform (30 µL-drop concepts, single-drop-detection approach) was successfully applied for the electrochemical determination of pterostilbene (PTS). Cyclic voltammetry identified irreversible oxidation of PTS, where oxidation peak was shown to be strongly dependent on the pH of the working environmental. Although the proposition of the detailed electrochemical oxidation mechanism of PTS goes out of the scope of the present research, we have determined the most probable reactive site of our analyte, by utilizing DFT-based reactivity descriptors (Fukui functions). For electrochemical quantification of PTS, oxidation peak at 0.32 V (vs. Ag/AgCl) was followed in presence of 0.5 mol L−1 of Briton–Robinson buffer solution (pH = 9). Coupled with the optimized parameters of differential pulse voltammetry (DPV), SPDE detected PTS in two linear ranges (first range was from 0.011 to 0.912 µmol L−1; second range was from 0.912 to 4.420 µmol L−1), providing the LOD and LOQ on a nanomolar level (3.1 nmol L−1 and 10.0 nmol L−1, respectively). The selectivity of the optimized DPV method was found to be excellent, with the current changes of less than 7%, in the presence of ten times higher concentrations of the certain interferences. The practical applicability of the SPDE and single-drop-detection approach in dietary supplements (with a declared PTS content of 50 mg/tablet), with the recovery values ranging from 95 to 102%, shows that the developed method has high potential for precise and accurate PTS detection, as well as exceptional miniaturization possibilities of relevant equipment for on-site sensing.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Chemosensors
T1  - Application of Screen Printed Diamond Electrode, Coupled with “Point-of-Care” Platform, for Nanomolar Quantification of Phytonutrient Pterostilbene in Dietary Supplements: An Experimental Study Supported by Theory
VL  - 11
IS  - 1
SP  - 15
DO  - 10.3390/chemosensors11010015
ER  - 

@article{
author = "Đurđić, Slađana and Vlahović, Filip and Markićević, Milan and Mutić, Jelena and Manojlović, Dragan and Stanković, Vesna and Švorc, Ľubomír and Stanković, Dalibor",
year = "2023",
abstract = "Herein, a screen–printed diamond electrode (SPDE) coupled with a “point-of-care” platform (30 µL-drop concepts, single-drop-detection approach) was successfully applied for the electrochemical determination of pterostilbene (PTS). Cyclic voltammetry identified irreversible oxidation of PTS, where oxidation peak was shown to be strongly dependent on the pH of the working environmental. Although the proposition of the detailed electrochemical oxidation mechanism of PTS goes out of the scope of the present research, we have determined the most probable reactive site of our analyte, by utilizing DFT-based reactivity descriptors (Fukui functions). For electrochemical quantification of PTS, oxidation peak at 0.32 V (vs. Ag/AgCl) was followed in presence of 0.5 mol L−1 of Briton–Robinson buffer solution (pH = 9). Coupled with the optimized parameters of differential pulse voltammetry (DPV), SPDE detected PTS in two linear ranges (first range was from 0.011 to 0.912 µmol L−1; second range was from 0.912 to 4.420 µmol L−1), providing the LOD and LOQ on a nanomolar level (3.1 nmol L−1 and 10.0 nmol L−1, respectively). The selectivity of the optimized DPV method was found to be excellent, with the current changes of less than 7%, in the presence of ten times higher concentrations of the certain interferences. The practical applicability of the SPDE and single-drop-detection approach in dietary supplements (with a declared PTS content of 50 mg/tablet), with the recovery values ranging from 95 to 102%, shows that the developed method has high potential for precise and accurate PTS detection, as well as exceptional miniaturization possibilities of relevant equipment for on-site sensing.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Chemosensors",
title = "Application of Screen Printed Diamond Electrode, Coupled with “Point-of-Care” Platform, for Nanomolar Quantification of Phytonutrient Pterostilbene in Dietary Supplements: An Experimental Study Supported by Theory",
volume = "11",
number = "1",
pages = "15",
doi = "10.3390/chemosensors11010015"
}

Đurđić, S., Vlahović, F., Markićević, M., Mutić, J., Manojlović, D., Stanković, V., Švorc, Ľ.,& Stanković, D.. (2023). Application of Screen Printed Diamond Electrode, Coupled with “Point-of-Care” Platform, for Nanomolar Quantification of Phytonutrient Pterostilbene in Dietary Supplements: An Experimental Study Supported by Theory. in Chemosensors
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 11(1), 15.
https://doi.org/10.3390/chemosensors11010015

Đurđić S, Vlahović F, Markićević M, Mutić J, Manojlović D, Stanković V, Švorc Ľ, Stanković D. Application of Screen Printed Diamond Electrode, Coupled with “Point-of-Care” Platform, for Nanomolar Quantification of Phytonutrient Pterostilbene in Dietary Supplements: An Experimental Study Supported by Theory. in Chemosensors. 2023;11(1):15.
doi:10.3390/chemosensors11010015 .

Đurđić, Slađana, Vlahović, Filip, Markićević, Milan, Mutić, Jelena, Manojlović, Dragan, Stanković, Vesna, Švorc, Ľubomír, Stanković, Dalibor, "Application of Screen Printed Diamond Electrode, Coupled with “Point-of-Care” Platform, for Nanomolar Quantification of Phytonutrient Pterostilbene in Dietary Supplements: An Experimental Study Supported by Theory" in Chemosensors, 11, no. 1 (2023):15,
https://doi.org/10.3390/chemosensors11010015 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, Kurt
AU  - Ćirković Veličković, T.
AU  - Mutić, Jelena
AU  - Stanković, Dalibor M.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4523
AB  - Based on graphene nanoplatelets capability to build block composites, as well as well-known electrochemical characteristic of the manganese oxide materials, in the present research, a nanocomposite, formed from graphene nanoplatelets (GNP) and manganese(IV)-oxide (MnO2) nanoparticles, has been proposed as a novel and convenient support for enzyme immobilization. Performance of screen printed carbon electrodes (SPCEs) was significantly improved after their modification with GNP@MnO2 (SPCE/GNP@MnO2). The polyphenolic index biosensor was prepared by applying the drop coating technique using laccase and Nafion®. Developed biosensor shows a fast and reliable amperometric response toward caffeic acid, as a model compound, at operating potential of +0.40 V (vs Ag/AgCl), with a wide linear range and detection limit of 1.9 μmol l-1. Developed procedure was successfully applied for the determination of polyphenolic indexes in wine samples. Recovery tests indicate excellent accuracy and precision of the method, concluding that the biosensor can offer a fast, accurate, reliable and precise determination of the polyphenolic index. More importantly, our results suggest a great potential for the application in real samples. © 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PB  - The Electrochemical Society ("ECS").
T2  - Journal of Electrochemical Society
T1  - Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application
VL  - 168
IS  - 3
SP  - 037510
DO  - 10.1149/1945-7111/abeaf2
ER  - 

@article{
author = "Đurđić, Slađana and Stanković, Vesna and Vlahović, Filip and Ognjanović, Miloš and Kalcher, Kurt and Ćirković Veličković, T. and Mutić, Jelena and Stanković, Dalibor M.",
year = "2021",
abstract = "Based on graphene nanoplatelets capability to build block composites, as well as well-known electrochemical characteristic of the manganese oxide materials, in the present research, a nanocomposite, formed from graphene nanoplatelets (GNP) and manganese(IV)-oxide (MnO2) nanoparticles, has been proposed as a novel and convenient support for enzyme immobilization. Performance of screen printed carbon electrodes (SPCEs) was significantly improved after their modification with GNP@MnO2 (SPCE/GNP@MnO2). The polyphenolic index biosensor was prepared by applying the drop coating technique using laccase and Nafion®. Developed biosensor shows a fast and reliable amperometric response toward caffeic acid, as a model compound, at operating potential of +0.40 V (vs Ag/AgCl), with a wide linear range and detection limit of 1.9 μmol l-1. Developed procedure was successfully applied for the determination of polyphenolic indexes in wine samples. Recovery tests indicate excellent accuracy and precision of the method, concluding that the biosensor can offer a fast, accurate, reliable and precise determination of the polyphenolic index. More importantly, our results suggest a great potential for the application in real samples. © 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.",
publisher = "The Electrochemical Society ("ECS").",
journal = "Journal of Electrochemical Society",
title = "Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application",
volume = "168",
number = "3",
pages = "037510",
doi = "10.1149/1945-7111/abeaf2"
}

Đurđić, S., Stanković, V., Vlahović, F., Ognjanović, M., Kalcher, K., Ćirković Veličković, T., Mutić, J.,& Stanković, D. M.. (2021). Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application. in Journal of Electrochemical Society
The Electrochemical Society ("ECS").., 168(3), 037510.
https://doi.org/10.1149/1945-7111/abeaf2

Đurđić S, Stanković V, Vlahović F, Ognjanović M, Kalcher K, Ćirković Veličković T, Mutić J, Stanković DM. Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application. in Journal of Electrochemical Society. 2021;168(3):037510.
doi:10.1149/1945-7111/abeaf2 .

Đurđić, Slađana, Stanković, Vesna, Vlahović, Filip, Ognjanović, Miloš, Kalcher, Kurt, Ćirković Veličković, T., Mutić, Jelena, Stanković, Dalibor M., "Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application" in Journal of Electrochemical Society, 168, no. 3 (2021):037510,
https://doi.org/10.1149/1945-7111/abeaf2 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, Kurt
AU  - Ćirković Veličković, T.
AU  - Mutić, Jelena
AU  - Stanković, Dalibor M.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4578
AB  - Based on graphene nanoplatelets capability to build block composites, as well as well-known electrochemical characteristic of the manganese oxide materials, in the present research, a nanocomposite, formed from graphene nanoplatelets (GNP) and manganese(IV)-oxide (MnO2) nanoparticles, has been proposed as a novel and convenient support for enzyme immobilization. Performance of screen printed carbon electrodes (SPCEs) was significantly improved after their modification with GNP@MnO2 (SPCE/GNP@MnO2). The polyphenolic index biosensor was prepared by applying the drop coating technique using laccase and Nafion®. Developed biosensor shows a fast and reliable amperometric response toward caffeic acid, as a model compound, at operating potential of +0.40 V (vs Ag/AgCl), with a wide linear range and detection limit of 1.9 μmol l-1. Developed procedure was successfully applied for the determination of polyphenolic indexes in wine samples. Recovery tests indicate excellent accuracy and precision of the method, concluding that the biosensor can offer a fast, accurate, reliable and precise determination of the polyphenolic index. More importantly, our results suggest a great potential for the application in real samples. © 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PB  - The Electrochemical Society ("ECS").
T2  - Journal of Electrochemical Society
T1  - Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application
VL  - 168
IS  - 3
SP  - 037510
DO  - 10.1149/1945-7111/abeaf2
ER  - 

@article{
author = "Đurđić, Slađana and Stanković, Vesna and Vlahović, Filip and Ognjanović, Miloš and Kalcher, Kurt and Ćirković Veličković, T. and Mutić, Jelena and Stanković, Dalibor M.",
year = "2021",
abstract = "Based on graphene nanoplatelets capability to build block composites, as well as well-known electrochemical characteristic of the manganese oxide materials, in the present research, a nanocomposite, formed from graphene nanoplatelets (GNP) and manganese(IV)-oxide (MnO2) nanoparticles, has been proposed as a novel and convenient support for enzyme immobilization. Performance of screen printed carbon electrodes (SPCEs) was significantly improved after their modification with GNP@MnO2 (SPCE/GNP@MnO2). The polyphenolic index biosensor was prepared by applying the drop coating technique using laccase and Nafion®. Developed biosensor shows a fast and reliable amperometric response toward caffeic acid, as a model compound, at operating potential of +0.40 V (vs Ag/AgCl), with a wide linear range and detection limit of 1.9 μmol l-1. Developed procedure was successfully applied for the determination of polyphenolic indexes in wine samples. Recovery tests indicate excellent accuracy and precision of the method, concluding that the biosensor can offer a fast, accurate, reliable and precise determination of the polyphenolic index. More importantly, our results suggest a great potential for the application in real samples. © 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.",
publisher = "The Electrochemical Society ("ECS").",
journal = "Journal of Electrochemical Society",
title = "Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application",
volume = "168",
number = "3",
pages = "037510",
doi = "10.1149/1945-7111/abeaf2"
}

Đurđić, S., Stanković, V., Vlahović, F., Ognjanović, M., Kalcher, K., Ćirković Veličković, T., Mutić, J.,& Stanković, D. M.. (2021). Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application. in Journal of Electrochemical Society
The Electrochemical Society ("ECS").., 168(3), 037510.
https://doi.org/10.1149/1945-7111/abeaf2

Đurđić S, Stanković V, Vlahović F, Ognjanović M, Kalcher K, Ćirković Veličković T, Mutić J, Stanković DM. Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application. in Journal of Electrochemical Society. 2021;168(3):037510.
doi:10.1149/1945-7111/abeaf2 .

Đurđić, Slađana, Stanković, Vesna, Vlahović, Filip, Ognjanović, Miloš, Kalcher, Kurt, Ćirković Veličković, T., Mutić, Jelena, Stanković, Dalibor M., "Laccase Polyphenolic Biosensor Supported on MnO2@GNP Decorated SPCE: Preparation, Characterization, and Analytical Application" in Journal of Electrochemical Society, 168, no. 3 (2021):037510,
https://doi.org/10.1149/1945-7111/abeaf2 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, Kurt
AU  - Manojlović, Dragan
AU  - Mutić, Jelena
AU  - Stanković, Dalibor M.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4683
AB  - L-DOPA (L-3,4-dihydroxyphenylalanine), the precursor of dopamine, is widely used in the treatment of Parkinson’s disease, thus determining and monitoring the concentration of L-DOPA is of utmost importance for both medical and scientific purposes. Although many analytical approaches, designed for drug detection and quantification, already exist, there is a constant need for modification of old and tailoring of new, faster, and selective methods. Redox active chemical species, such as L-DOPA, can be measured directly by electrochemical means, whereas electrochemical sensors combine sensitivity and selectivity within a small analytical device. This work demonstrates the development of such electrochemical sensor, based on carboxylated single-wall carbon nanotubes (SWCNT-COOH) decorated with SiO2 coated-Nd2O3 nanoparticles, and further application for the detection of L-DOPA. Developed SWCNT-COOH@Nd2O3-SiO2 sensor shows linear response in the range from 2 µmol L−1 to 52 µmol L−1 analyte concentration, and beside the low detection limit, it is characterized by a fast response time, as well as good life-time, reproducibility and repeatability.
PB  - Elsevier
T2  - Microchemical Journal
T1  - Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection
VL  - 168
SP  - 106416
DO  - 10.1016/j.microc.2021.106416
ER  - 

@article{
author = "Đurđić, Slađana and Stanković, Vesna and Vlahović, Filip and Ognjanović, Miloš and Kalcher, Kurt and Manojlović, Dragan and Mutić, Jelena and Stanković, Dalibor M.",
year = "2021",
abstract = "L-DOPA (L-3,4-dihydroxyphenylalanine), the precursor of dopamine, is widely used in the treatment of Parkinson’s disease, thus determining and monitoring the concentration of L-DOPA is of utmost importance for both medical and scientific purposes. Although many analytical approaches, designed for drug detection and quantification, already exist, there is a constant need for modification of old and tailoring of new, faster, and selective methods. Redox active chemical species, such as L-DOPA, can be measured directly by electrochemical means, whereas electrochemical sensors combine sensitivity and selectivity within a small analytical device. This work demonstrates the development of such electrochemical sensor, based on carboxylated single-wall carbon nanotubes (SWCNT-COOH) decorated with SiO2 coated-Nd2O3 nanoparticles, and further application for the detection of L-DOPA. Developed SWCNT-COOH@Nd2O3-SiO2 sensor shows linear response in the range from 2 µmol L−1 to 52 µmol L−1 analyte concentration, and beside the low detection limit, it is characterized by a fast response time, as well as good life-time, reproducibility and repeatability.",
publisher = "Elsevier",
journal = "Microchemical Journal",
title = "Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection",
volume = "168",
pages = "106416",
doi = "10.1016/j.microc.2021.106416"
}

Đurđić, S., Stanković, V., Vlahović, F., Ognjanović, M., Kalcher, K., Manojlović, D., Mutić, J.,& Stanković, D. M.. (2021). Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection. in Microchemical Journal
Elsevier., 168, 106416.
https://doi.org/10.1016/j.microc.2021.106416

Đurđić S, Stanković V, Vlahović F, Ognjanović M, Kalcher K, Manojlović D, Mutić J, Stanković DM. Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection. in Microchemical Journal. 2021;168:106416.
doi:10.1016/j.microc.2021.106416 .

Đurđić, Slađana, Stanković, Vesna, Vlahović, Filip, Ognjanović, Miloš, Kalcher, Kurt, Manojlović, Dragan, Mutić, Jelena, Stanković, Dalibor M., "Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection" in Microchemical Journal, 168 (2021):106416,
https://doi.org/10.1016/j.microc.2021.106416 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Ražić, Slavica
AU  - Mutić, Jelena
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4831
AB  - Lead isotope ratio pattern (206Pb/207Pb, 208Pb/206Pb, 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb) was analyzed in 59 samples of Serbian wine, from four geographical regions. By utilization of powerful inductively coupled plasma mass spectrometry (ICP-QMS), lead isotope ratios were used as unique “fingerprint”, when combined with multivariate methods of analysis (Principal Component Analysis), provided information on the geographical origin of wine. In validation of ICP- QMS method and quantitative analysis, the certified reference material NIST SRM 981 was employed to test the mass-bias correction and thallium isotopes 203Tl and 205Tl (NIST SRM 997) as an internal standard. The obtained results were discussed in correlation with the corresponding values of LIRs of different European and Australian wines. In addition, the impact of anthropogenic Pb from different sources on the total Pb isotopic composition in Serbian wines was analyzed too. On the other side, the obtained values of Pb content were compared with the applicable health safety standards, according to the International Code of Oenological Practices.
PB  - Frontiers in Chemistry
T2  - Frontiers in Chemistry
T1  - Is a Lead Isotope Ratios in Wine Good Marker for Origin Assessment?
VL  - 9
SP  - 746695
DO  - 10.3389/fchem.2021.746695
ER  - 

@article{
author = "Đurđić, Slađana and Stanković, Vesna and Ražić, Slavica and Mutić, Jelena",
year = "2021",
abstract = "Lead isotope ratio pattern (206Pb/207Pb, 208Pb/206Pb, 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb) was analyzed in 59 samples of Serbian wine, from four geographical regions. By utilization of powerful inductively coupled plasma mass spectrometry (ICP-QMS), lead isotope ratios were used as unique “fingerprint”, when combined with multivariate methods of analysis (Principal Component Analysis), provided information on the geographical origin of wine. In validation of ICP- QMS method and quantitative analysis, the certified reference material NIST SRM 981 was employed to test the mass-bias correction and thallium isotopes 203Tl and 205Tl (NIST SRM 997) as an internal standard. The obtained results were discussed in correlation with the corresponding values of LIRs of different European and Australian wines. In addition, the impact of anthropogenic Pb from different sources on the total Pb isotopic composition in Serbian wines was analyzed too. On the other side, the obtained values of Pb content were compared with the applicable health safety standards, according to the International Code of Oenological Practices.",
publisher = "Frontiers in Chemistry",
journal = "Frontiers in Chemistry",
title = "Is a Lead Isotope Ratios in Wine Good Marker for Origin Assessment?",
volume = "9",
pages = "746695",
doi = "10.3389/fchem.2021.746695"
}

Đurđić, S., Stanković, V., Ražić, S.,& Mutić, J.. (2021). Is a Lead Isotope Ratios in Wine Good Marker for Origin Assessment?. in Frontiers in Chemistry
Frontiers in Chemistry., 9, 746695.
https://doi.org/10.3389/fchem.2021.746695

Đurđić S, Stanković V, Ražić S, Mutić J. Is a Lead Isotope Ratios in Wine Good Marker for Origin Assessment?. in Frontiers in Chemistry. 2021;9:746695.
doi:10.3389/fchem.2021.746695 .

Đurđić, Slađana, Stanković, Vesna, Ražić, Slavica, Mutić, Jelena, "Is a Lead Isotope Ratios in Wine Good Marker for Origin Assessment?" in Frontiers in Chemistry, 9 (2021):746695,
https://doi.org/10.3389/fchem.2021.746695 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3419
AB  - Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor
VL  - 860
SP  - 113928
DO  - 10.1016/j.jelechem.2020.113928
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2020",
abstract = "Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor",
volume = "860",
pages = "113928",
doi = "10.1016/j.jelechem.2020.113928"
}

Stanković, V., Đurđić, S., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2020). Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry
Elsevier., 860, 113928.
https://doi.org/10.1016/j.jelechem.2020.113928

Stanković V, Đurđić S, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry. 2020;860:113928.
doi:10.1016/j.jelechem.2020.113928 .

Stanković, Vesna, Đurđić, Slađana, Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor" in Journal of Electroanalytical Chemistry, 860 (2020):113928,
https://doi.org/10.1016/j.jelechem.2020.113928 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3420
AB  - Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor
VL  - 860
SP  - 113928
DO  - 10.1016/j.jelechem.2020.113928
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2020",
abstract = "Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor",
volume = "860",
pages = "113928",
doi = "10.1016/j.jelechem.2020.113928"
}

Stanković, V., Đurđić, S., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2020). Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry
Elsevier., 860, 113928.
https://doi.org/10.1016/j.jelechem.2020.113928

Stanković V, Đurđić S, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry. 2020;860:113928.
doi:10.1016/j.jelechem.2020.113928 .

Stanković, Vesna, Đurđić, Slađana, Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor" in Journal of Electroanalytical Chemistry, 860 (2020):113928,
https://doi.org/10.1016/j.jelechem.2020.113928 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Mutić, Jelena
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3612
AB  - A nonenzymatic hydrogen-peroxide sensor was developed by utilization of silver nanoparticles and graphene
nanoribbons. The mentioned composite was inflicted on a screen-printed carbon electrode which provides disposable,
ready-to-use sensor. The structure and morphology of the nanocomposite were analyzed by scanning electron microscopy
and X-ray diffraction. The sensor has excellent performance toward H2O2 amperometric detection. Figures of
merit include dynamic response range from 0.05 to 5 mM and detection limit of 20 μM (at S/N =3). The fabricated
sensor was used for the determination ofH2O2 in milk samples. The obtained results showed that the proposed AgNp@
GNR/SPCE sensor can be used for the determination of hydrogen peroxide in real samples.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode
VL  - 876
SP  - 114487
DO  - 10.1016/j.jelechem.2020.114487
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana and Ognjanović, Miloš and Mutić, Jelena and Kalcher, Kurt and Stanković, Dalibor",
year = "2020",
abstract = "A nonenzymatic hydrogen-peroxide sensor was developed by utilization of silver nanoparticles and graphene
nanoribbons. The mentioned composite was inflicted on a screen-printed carbon electrode which provides disposable,
ready-to-use sensor. The structure and morphology of the nanocomposite were analyzed by scanning electron microscopy
and X-ray diffraction. The sensor has excellent performance toward H2O2 amperometric detection. Figures of
merit include dynamic response range from 0.05 to 5 mM and detection limit of 20 μM (at S/N =3). The fabricated
sensor was used for the determination ofH2O2 in milk samples. The obtained results showed that the proposed AgNp@
GNR/SPCE sensor can be used for the determination of hydrogen peroxide in real samples.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode",
volume = "876",
pages = "114487",
doi = "10.1016/j.jelechem.2020.114487"
}

Stanković, V., Đurđić, S., Ognjanović, M., Mutić, J., Kalcher, K.,& Stanković, D.. (2020). A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry
Elsevier., 876, 114487.
https://doi.org/10.1016/j.jelechem.2020.114487

Stanković V, Đurđić S, Ognjanović M, Mutić J, Kalcher K, Stanković D. A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry. 2020;876:114487.
doi:10.1016/j.jelechem.2020.114487 .

Stanković, Vesna, Đurđić, Slađana, Ognjanović, Miloš, Mutić, Jelena, Kalcher, Kurt, Stanković, Dalibor, "A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode" in Journal of Electroanalytical Chemistry, 876 (2020):114487,
https://doi.org/10.1016/j.jelechem.2020.114487 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Mutić, Jelena
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3613
AB  - A nonenzymatic hydrogen-peroxide sensor was developed by utilization of silver nanoparticles and graphenenanoribbons. The mentioned composite was inflicted on a screen-printed carbon electrode which provides disposable,ready-to-use sensor. The structure and morphology of the nanocomposite were analyzed by scanning electron microscopyand X-ray diffraction. The sensor has excellent performance toward H2O2 amperometric detection. Figures ofmerit include dynamic response range from 0.05 to 5 mM and detection limit of 20 μM (at S/N =3). The fabricatedsensor was used for the determination ofH2O2 in milk samples. The obtained results showed that the proposed AgNp@GNR/SPCE sensor can be used for the determination of hydrogen peroxide in real samples.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode
VL  - 876
SP  - 114487
DO  - 10.1016/j.jelechem.2020.114487
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana and Ognjanović, Miloš and Mutić, Jelena and Kalcher, Kurt and Stanković, Dalibor",
year = "2020",
abstract = "A nonenzymatic hydrogen-peroxide sensor was developed by utilization of silver nanoparticles and graphenenanoribbons. The mentioned composite was inflicted on a screen-printed carbon electrode which provides disposable,ready-to-use sensor. The structure and morphology of the nanocomposite were analyzed by scanning electron microscopyand X-ray diffraction. The sensor has excellent performance toward H2O2 amperometric detection. Figures ofmerit include dynamic response range from 0.05 to 5 mM and detection limit of 20 μM (at S/N =3). The fabricatedsensor was used for the determination ofH2O2 in milk samples. The obtained results showed that the proposed AgNp@GNR/SPCE sensor can be used for the determination of hydrogen peroxide in real samples.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode",
volume = "876",
pages = "114487",
doi = "10.1016/j.jelechem.2020.114487"
}

Stanković, V., Đurđić, S., Ognjanović, M., Mutić, J., Kalcher, K.,& Stanković, D.. (2020). A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry
Elsevier., 876, 114487.
https://doi.org/10.1016/j.jelechem.2020.114487

Stanković V, Đurđić S, Ognjanović M, Mutić J, Kalcher K, Stanković D. A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry. 2020;876:114487.
doi:10.1016/j.jelechem.2020.114487 .

Stanković, Vesna, Đurđić, Slađana, Ognjanović, Miloš, Mutić, Jelena, Kalcher, Kurt, Stanković, Dalibor, "A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode" in Journal of Electroanalytical Chemistry, 876 (2020):114487,
https://doi.org/10.1016/j.jelechem.2020.114487 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Ražić, Slavica
AU  - Mutić, Jelena
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3479
AB  - The analysis of isotope ratios of lead in the mushrooms and soil, where they were grown, assisted with a principal component analysis, offered a new perspective for understanding possible chemical environment in a real setup of those compartments. The content of lead and its isotope compositions were determined in soil samples and mushroom Macrolepiota procera from unpolluted area of Mountain Goč, Serbia. Sequential extraction procedure based on the Commission of the European Community Bureau of Reference (BCR) was applied on soil samples in order to determine the distribution of lead in the labile and un-labile fractions of the soil. Caps and stipes of mushrooms were subjected to microwave acid-assisted digestion prior to measurements by inductively coupled plasma quadrupole mass spectrometer for determination of lead content and lead isotope ratios. Information about the chemical fractionation of Pb in soil, Pb isotopic data from soil fractions and fruiting bodies allowed a more detailed insight on the uptake mechanisms. Lead was predominantly associated with reducible fraction (~ 60%). Only its small portion (∼ 1%) was present in the exchangeable and acid-extractable fractions suggesting the low mobility of Pb. Lead isotope analysis revealed the presence of anthropogenic lead in the surface soil. Significant lower 206Pb/207Pb compared with other fractions was found in exchangeable and acid-soluble fraction (1.331 ± 0.010), which corresponds to the isotope ratio of European gasoline. The highest 206Pb/207Pb ratio was observed in reducible fraction (1.162 ± 0.007), while in oxidizable and residual fraction, those values were similar (1.159 ± 0.006 and 1.159 ± 0.004, respectively). Distinction of exchangeable and acid-extractable fractions from others was also confirmed, for the first time, by principal component analysis. The analysis of four isotope ratios (206Pb/207Pb, 208Pb/206Pb, 206Pb/204Pb, and 207Pb/204Pb) indicated that the analyzed M. procera accumulates lead from the first two fractions of topsoil layers.
PB  - Springer
T2  - Environmental Science and Pollution Research
T1  - Lead isotope ratios as tool for elucidation of chemical environment in a system of Macrolepiota procera (Scop.) Singer - soil
DO  - 10.1007/s11356-020-07947-6
ER  - 

@article{
author = "Đurđić, Slađana and Stanković, Vesna and Ražić, Slavica and Mutić, Jelena",
year = "2020",
abstract = "The analysis of isotope ratios of lead in the mushrooms and soil, where they were grown, assisted with a principal component analysis, offered a new perspective for understanding possible chemical environment in a real setup of those compartments. The content of lead and its isotope compositions were determined in soil samples and mushroom Macrolepiota procera from unpolluted area of Mountain Goč, Serbia. Sequential extraction procedure based on the Commission of the European Community Bureau of Reference (BCR) was applied on soil samples in order to determine the distribution of lead in the labile and un-labile fractions of the soil. Caps and stipes of mushrooms were subjected to microwave acid-assisted digestion prior to measurements by inductively coupled plasma quadrupole mass spectrometer for determination of lead content and lead isotope ratios. Information about the chemical fractionation of Pb in soil, Pb isotopic data from soil fractions and fruiting bodies allowed a more detailed insight on the uptake mechanisms. Lead was predominantly associated with reducible fraction (~ 60%). Only its small portion (∼ 1%) was present in the exchangeable and acid-extractable fractions suggesting the low mobility of Pb. Lead isotope analysis revealed the presence of anthropogenic lead in the surface soil. Significant lower 206Pb/207Pb compared with other fractions was found in exchangeable and acid-soluble fraction (1.331 ± 0.010), which corresponds to the isotope ratio of European gasoline. The highest 206Pb/207Pb ratio was observed in reducible fraction (1.162 ± 0.007), while in oxidizable and residual fraction, those values were similar (1.159 ± 0.006 and 1.159 ± 0.004, respectively). Distinction of exchangeable and acid-extractable fractions from others was also confirmed, for the first time, by principal component analysis. The analysis of four isotope ratios (206Pb/207Pb, 208Pb/206Pb, 206Pb/204Pb, and 207Pb/204Pb) indicated that the analyzed M. procera accumulates lead from the first two fractions of topsoil layers.",
publisher = "Springer",
journal = "Environmental Science and Pollution Research",
title = "Lead isotope ratios as tool for elucidation of chemical environment in a system of Macrolepiota procera (Scop.) Singer - soil",
doi = "10.1007/s11356-020-07947-6"
}

Đurđić, S., Stanković, V., Ražić, S.,& Mutić, J.. (2020). Lead isotope ratios as tool for elucidation of chemical environment in a system of Macrolepiota procera (Scop.) Singer - soil. in Environmental Science and Pollution Research
Springer..
https://doi.org/10.1007/s11356-020-07947-6

Đurđić S, Stanković V, Ražić S, Mutić J. Lead isotope ratios as tool for elucidation of chemical environment in a system of Macrolepiota procera (Scop.) Singer - soil. in Environmental Science and Pollution Research. 2020;.
doi:10.1007/s11356-020-07947-6 .

Đurđić, Slađana, Stanković, Vesna, Ražić, Slavica, Mutić, Jelena, "Lead isotope ratios as tool for elucidation of chemical environment in a system of Macrolepiota procera (Scop.) Singer - soil" in Environmental Science and Pollution Research (2020),
https://doi.org/10.1007/s11356-020-07947-6 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Vukojević, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Švorc, jubomir
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3224
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing
VL  - 850
DO  - 10.1016/j.jelechem.2019.113400
ER  - 

@article{
author = "Đurđić, Slađana and Vukojević, Vesna and Vlahović, Filip and Ognjanović, Miloš and Švorc, jubomir and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2019",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing",
volume = "850",
doi = "10.1016/j.jelechem.2019.113400"
}

Đurđić, S., Vukojević, V., Vlahović, F., Ognjanović, M., Švorc, j., Kalcher, K., Mutić, J.,& Stanković, D.. (2019). Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing. in Journal of Electroanalytical Chemistry
Elsevier., 850.
https://doi.org/10.1016/j.jelechem.2019.113400

Đurđić S, Vukojević V, Vlahović F, Ognjanović M, Švorc J, Kalcher K, Mutić J, Stanković D. Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing. in Journal of Electroanalytical Chemistry. 2019;850.
doi:10.1016/j.jelechem.2019.113400 .

Đurđić, Slađana, Vukojević, Vesna, Vlahović, Filip, Ognjanović, Miloš, Švorc, jubomir, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing" in Journal of Electroanalytical Chemistry, 850 (2019),
https://doi.org/10.1016/j.jelechem.2019.113400 . .

TY  - CONF
AU  - Đurđić, Slađana
AU  - Vukojević, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, K
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2019
UR  - http://yisac2019.upce.cz/
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3226
AB  - A nanocomposite formed from graphene nanoplatelets (GNP) and manganese oxide (MnO2) nanoparticles (GNP/MnO2) was proposed as a novel and suitable support for enzyme immobilisation. The performances of screen-printed carbon electrodes (SPCEs) was highly improved after modification with GNP/MnO2 (SPCE/GNP/MnO2). The polyphenol index biosensor was prepared by surface modification of SPCE/GNP/MnO2 with drop coating of the laccase (from Trametes Versicolor) and Nafion®. All electrochemical measurements were carried out in acetate buffer, pH=4.60. The developed laccase biosensor shows fast and reliable amperometric response toward caffeic acid, as model compound, at operating potential of +0.40 V (vs. Ag/AgCl), with a linear range from 5 μmol L-1 to 2.75 mmol L-1 (r2 = 0.9997), with detection limit of 2.38 μmol L-1. Moreover, effects of possible interfering compounds were investigated. The developed procedure was successfully applied for the determination of total polyphenol content in red and white wine samples. In order to validate the proposed method, the polyphenol content in wine samples, under optimized parameters, was determined using a glassy carbon electrode. Recovery tests (95.7-97.5%) shows satisfactory accuracy and precision of the developed method, concluding that proposed construction of biosensor can offer fast, stable and reproducible determination of the polyphenol index.
PB  - University of Pardubice, 2019
C3  - Book of Abstracts - YISAC 2019 (26th Young Investigators’ Seminar on Analytical Chemistry)
T1  - Enzymatic polyphenol index biosensor based on Graphene nanoplatelets decorated with MnO2 Nanoparticles. Preparation, characterization and Analytical application
SP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_cer_3226
ER  - 

@conference{
author = "Đurđić, Slađana and Vukojević, Vesna and Vlahović, Filip and Ognjanović, Miloš and Kalcher, K and Mutić, Jelena and Stanković, Dalibor",
year = "2019",
abstract = "A nanocomposite formed from graphene nanoplatelets (GNP) and manganese oxide (MnO2) nanoparticles (GNP/MnO2) was proposed as a novel and suitable support for enzyme immobilisation. The performances of screen-printed carbon electrodes (SPCEs) was highly improved after modification with GNP/MnO2 (SPCE/GNP/MnO2). The polyphenol index biosensor was prepared by surface modification of SPCE/GNP/MnO2 with drop coating of the laccase (from Trametes Versicolor) and Nafion®. All electrochemical measurements were carried out in acetate buffer, pH=4.60. The developed laccase biosensor shows fast and reliable amperometric response toward caffeic acid, as model compound, at operating potential of +0.40 V (vs. Ag/AgCl), with a linear range from 5 μmol L-1 to 2.75 mmol L-1 (r2 = 0.9997), with detection limit of 2.38 μmol L-1. Moreover, effects of possible interfering compounds were investigated. The developed procedure was successfully applied for the determination of total polyphenol content in red and white wine samples. In order to validate the proposed method, the polyphenol content in wine samples, under optimized parameters, was determined using a glassy carbon electrode. Recovery tests (95.7-97.5%) shows satisfactory accuracy and precision of the developed method, concluding that proposed construction of biosensor can offer fast, stable and reproducible determination of the polyphenol index.",
publisher = "University of Pardubice, 2019",
journal = "Book of Abstracts - YISAC 2019 (26th Young Investigators’ Seminar on Analytical Chemistry)",
title = "Enzymatic polyphenol index biosensor based on Graphene nanoplatelets decorated with MnO2 Nanoparticles. Preparation, characterization and Analytical application",
pages = "38",
url = "https://hdl.handle.net/21.15107/rcub_cer_3226"
}

Đurđić, S., Vukojević, V., Vlahović, F., Ognjanović, M., Kalcher, K., Mutić, J.,& Stanković, D.. (2019). Enzymatic polyphenol index biosensor based on Graphene nanoplatelets decorated with MnO2 Nanoparticles. Preparation, characterization and Analytical application. in Book of Abstracts - YISAC 2019 (26th Young Investigators’ Seminar on Analytical Chemistry)
University of Pardubice, 2019., 38.
https://hdl.handle.net/21.15107/rcub_cer_3226

Đurđić S, Vukojević V, Vlahović F, Ognjanović M, Kalcher K, Mutić J, Stanković D. Enzymatic polyphenol index biosensor based on Graphene nanoplatelets decorated with MnO2 Nanoparticles. Preparation, characterization and Analytical application. in Book of Abstracts - YISAC 2019 (26th Young Investigators’ Seminar on Analytical Chemistry). 2019;:38.
https://hdl.handle.net/21.15107/rcub_cer_3226 .

Đurđić, Slađana, Vukojević, Vesna, Vlahović, Filip, Ognjanović, Miloš, Kalcher, K, Mutić, Jelena, Stanković, Dalibor, "Enzymatic polyphenol index biosensor based on Graphene nanoplatelets decorated with MnO2 Nanoparticles. Preparation, characterization and Analytical application" in Book of Abstracts - YISAC 2019 (26th Young Investigators’ Seminar on Analytical Chemistry) (2019):38,
https://hdl.handle.net/21.15107/rcub_cer_3226 .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Vukojević, Vesna
AU  - Ognjanović, Miloš
AU  - Švorc, Ljubomir
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3311
AB  - In this research we demonstrated detailed electrochemistry polydatin. Polydatin is a natural compound with expressed antioxidant activity. Electrochemical behavior of polydatin was tested in the potential range from -1.5 V to 2 V at unmodified boron doped diamond electrode in various pH of supporting electrolyte. It has been noticed that polydatin provides two oxidation peaks, one at around 0.73 V and second at around 1.3 V. In the reverse scan no reduction peak was observed. Quantification of polydatin was done based on first oxidation peak using square wave voltammetry. After optimization of the method, linear working range from 1·10-7 M to 7·10-5 M was obtained, with limit of detection and limit of quantification of 6·10-9 M and 2·10-8 M, respectively. Negligible interferences effects were noticed. Developed method shows excellent accuracy and precision toward detection of polydatin. Also, developed method was used for quantification of polydatin in dietary supplements.
PB  - ESG
T2  - International Journal of Electrochemical Science
T1  - Nanomolar Quantification of Polydatin at Boron Doped Diamond Electrode. Application in Dietary Supplements
VL  - 14
SP  - 5086
EP  - 5095
DO  - 10.20964/2019.06.01
ER  - 

@article{
author = "Đurđić, Slađana and Vukojević, Vesna and Ognjanović, Miloš and Švorc, Ljubomir and Mutić, Jelena and Stanković, Dalibor",
year = "2019",
abstract = "In this research we demonstrated detailed electrochemistry polydatin. Polydatin is a natural compound with expressed antioxidant activity. Electrochemical behavior of polydatin was tested in the potential range from -1.5 V to 2 V at unmodified boron doped diamond electrode in various pH of supporting electrolyte. It has been noticed that polydatin provides two oxidation peaks, one at around 0.73 V and second at around 1.3 V. In the reverse scan no reduction peak was observed. Quantification of polydatin was done based on first oxidation peak using square wave voltammetry. After optimization of the method, linear working range from 1·10-7 M to 7·10-5 M was obtained, with limit of detection and limit of quantification of 6·10-9 M and 2·10-8 M, respectively. Negligible interferences effects were noticed. Developed method shows excellent accuracy and precision toward detection of polydatin. Also, developed method was used for quantification of polydatin in dietary supplements.",
publisher = "ESG",
journal = "International Journal of Electrochemical Science",
title = "Nanomolar Quantification of Polydatin at Boron Doped Diamond Electrode. Application in Dietary Supplements",
volume = "14",
pages = "5086-5095",
doi = "10.20964/2019.06.01"
}

Đurđić, S., Vukojević, V., Ognjanović, M., Švorc, L., Mutić, J.,& Stanković, D.. (2019). Nanomolar Quantification of Polydatin at Boron Doped Diamond Electrode. Application in Dietary Supplements. in International Journal of Electrochemical Science
ESG., 14, 5086-5095.
https://doi.org/10.20964/2019.06.01

Đurđić S, Vukojević V, Ognjanović M, Švorc L, Mutić J, Stanković D. Nanomolar Quantification of Polydatin at Boron Doped Diamond Electrode. Application in Dietary Supplements. in International Journal of Electrochemical Science. 2019;14:5086-5095.
doi:10.20964/2019.06.01 .

Đurđić, Slađana, Vukojević, Vesna, Ognjanović, Miloš, Švorc, Ljubomir, Mutić, Jelena, Stanković, Dalibor, "Nanomolar Quantification of Polydatin at Boron Doped Diamond Electrode. Application in Dietary Supplements" in International Journal of Electrochemical Science, 14 (2019):5086-5095,
https://doi.org/10.20964/2019.06.01 . .

TY  - CONF
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana
AU  - Jevtić, Sanja
AU  - Pergal, Marija
AU  - Petković, Branka B.
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5811
AB  - In this work, for the first time, we proposed electrochemical behavior and development of analytical procedure for quantification of pesticide azamethiphos, using boron doped diamond (BDD) electrode. It was found that azamethiphos electrochemical behavior is irreversible oxidation at potential of around 1.70 V, in 1M nitric acid. Square wave voltammetric technique was most appropriate for azamethiphos quantification. Under optimized experimental conditions linear working range from 2 to 100 pM was estimated with detection limit of 1.38 pM. Negligible effect of possible interfering compound was observed. Obtained results clearly show that developed analytical methodology can be adequate replacement for the, up to date, used methods for detection of organophosphorous pesticide.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - Physical Chemistry 2018 - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
T1  - Quantification of organophosphorus pesticide azamethiphos using electroanalytical approach
VL  - 2
SP  - 1045
EP  - 1048
UR  - https://hdl.handle.net/21.15107/rcub_cer_5811
ER  - 

@conference{
author = "Vukojević, Vesna and Đurđić, Slađana and Jevtić, Sanja and Pergal, Marija and Petković, Branka B. and Stanković, Dalibor",
year = "2018",
abstract = "In this work, for the first time, we proposed electrochemical behavior and development of analytical procedure for quantification of pesticide azamethiphos, using boron doped diamond (BDD) electrode. It was found that azamethiphos electrochemical behavior is irreversible oxidation at potential of around 1.70 V, in 1M nitric acid. Square wave voltammetric technique was most appropriate for azamethiphos quantification. Under optimized experimental conditions linear working range from 2 to 100 pM was estimated with detection limit of 1.38 pM. Negligible effect of possible interfering compound was observed. Obtained results clearly show that developed analytical methodology can be adequate replacement for the, up to date, used methods for detection of organophosphorous pesticide.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - Physical Chemistry 2018 - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade",
title = "Quantification of organophosphorus pesticide azamethiphos using electroanalytical approach",
volume = "2",
pages = "1045-1048",
url = "https://hdl.handle.net/21.15107/rcub_cer_5811"
}

Vukojević, V., Đurđić, S., Jevtić, S., Pergal, M., Petković, B. B.,& Stanković, D.. (2018). Quantification of organophosphorus pesticide azamethiphos using electroanalytical approach. in Proceedings - Physical Chemistry 2018 - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
Society of Physical Chemists of Serbia., 2, 1045-1048.
https://hdl.handle.net/21.15107/rcub_cer_5811

Vukojević V, Đurđić S, Jevtić S, Pergal M, Petković BB, Stanković D. Quantification of organophosphorus pesticide azamethiphos using electroanalytical approach. in Proceedings - Physical Chemistry 2018 - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade. 2018;2:1045-1048.
https://hdl.handle.net/21.15107/rcub_cer_5811 .

Vukojević, Vesna, Đurđić, Slađana, Jevtić, Sanja, Pergal, Marija, Petković, Branka B., Stanković, Dalibor, "Quantification of organophosphorus pesticide azamethiphos using electroanalytical approach" in Proceedings - Physical Chemistry 2018 - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade, 2 (2018):1045-1048,
https://hdl.handle.net/21.15107/rcub_cer_5811 .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Vukojević, Vesna
AU  - Jevtic, Sonja
AU  - Pergal, Marija
AU  - Petković, Branka B.
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2340
AB  - In this work, for the first time we proposed electrochemical behavior and development of an analytical procedure for quantification of pesticide clomazone. Electrochemical behavior of clomazone's at boron-doped diamond electrode is characterized with irreversible oxidation at potential of around 1.6 V, in Britton-Robinson buffer solution at pH 2. It was found that potential of this oxidation was not pH dependent excluding presence of proton in the electrochemical reaction. Square wave voltammetry method was the most appropriate for clomazone quantification and proposed procedure was successfully applied for determination of clomazone in river water samples. Obtained parameters, detection limit of 0.21 mu M and working linear range from 1 to 100 mu M and satisfied selectivity can indicate that presented results open new field in research of this group of pesticides and offer possible replacement to the sophisticated and expensive chromatographic methods.
PB  - Esg, Belgrade
T2  - International Journal of Electrochemical Science
T1  - Herbicide Clomazone Detection Using Electroanalytical Approach Using Boron Doped Diamond Electrode
VL  - 13
IS  - 3
SP  - 2791
EP  - 2799
DO  - 10.20964/2018.03.39
ER  - 

@article{
author = "Đurđić, Slađana and Vukojević, Vesna and Jevtic, Sonja and Pergal, Marija and Petković, Branka B. and Stanković, Dalibor",
year = "2018",
abstract = "In this work, for the first time we proposed electrochemical behavior and development of an analytical procedure for quantification of pesticide clomazone. Electrochemical behavior of clomazone's at boron-doped diamond electrode is characterized with irreversible oxidation at potential of around 1.6 V, in Britton-Robinson buffer solution at pH 2. It was found that potential of this oxidation was not pH dependent excluding presence of proton in the electrochemical reaction. Square wave voltammetry method was the most appropriate for clomazone quantification and proposed procedure was successfully applied for determination of clomazone in river water samples. Obtained parameters, detection limit of 0.21 mu M and working linear range from 1 to 100 mu M and satisfied selectivity can indicate that presented results open new field in research of this group of pesticides and offer possible replacement to the sophisticated and expensive chromatographic methods.",
publisher = "Esg, Belgrade",
journal = "International Journal of Electrochemical Science",
title = "Herbicide Clomazone Detection Using Electroanalytical Approach Using Boron Doped Diamond Electrode",
volume = "13",
number = "3",
pages = "2791-2799",
doi = "10.20964/2018.03.39"
}

Đurđić, S., Vukojević, V., Jevtic, S., Pergal, M., Petković, B. B.,& Stanković, D.. (2018). Herbicide Clomazone Detection Using Electroanalytical Approach Using Boron Doped Diamond Electrode. in International Journal of Electrochemical Science
Esg, Belgrade., 13(3), 2791-2799.
https://doi.org/10.20964/2018.03.39

Đurđić S, Vukojević V, Jevtic S, Pergal M, Petković BB, Stanković D. Herbicide Clomazone Detection Using Electroanalytical Approach Using Boron Doped Diamond Electrode. in International Journal of Electrochemical Science. 2018;13(3):2791-2799.
doi:10.20964/2018.03.39 .

Đurđić, Slađana, Vukojević, Vesna, Jevtic, Sonja, Pergal, Marija, Petković, Branka B., Stanković, Dalibor, "Herbicide Clomazone Detection Using Electroanalytical Approach Using Boron Doped Diamond Electrode" in International Journal of Electrochemical Science, 13, no. 3 (2018):2791-2799,
https://doi.org/10.20964/2018.03.39 . .

TY  - JOUR
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana
AU  - Jevtic, Sonja
AU  - Pergal, Marija
AU  - Markovic, Aleksandar
AU  - Mutić, Jelena
AU  - Petković, Branka B.
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2358
AB  - In this work, the electrochemical behaviour and the subsequent development of an analytical procedure for quantification of pesticide azamethiphos, using boron-doped diamond (BDD) electrode are reported for the first time. It was found that azamethiphos electrochemical behaviour is irreversible oxidation at the potential of around 1.70 V, in 1 M nitric acid (pH 0). Also, it was found that potential of this oxidation was not pH dependent which can be attributed to the no proton involvement in electrochemical reaction on the electrode surface. The square wave voltammetric method was most appropriate for azamethiphos quantification. Under optimised experimental conditions, linear working range from 2 to 100 mu M was estimated with the detection limit of 0.45 mu M. Negligible effect of the possible interfering compound was observed. The obtained results show that the developed analytical methodology can be an adequate replacement for the, up to date, used methods for detection of organophosphorous pesticide.
PB  - Taylor & Francis Ltd, Abingdon
T2  - International Journal of Environmental Analytical Chemistry
T1  - First electrochemical investigation of organophosphorus pesticide azametiphos and its quantification using electroanalytical approach
VL  - 98
IS  - 13
SP  - 1175
EP  - 1185
DO  - 10.1080/03067319.2018.1537394
ER  - 

@article{
author = "Vukojević, Vesna and Đurđić, Slađana and Jevtic, Sonja and Pergal, Marija and Markovic, Aleksandar and Mutić, Jelena and Petković, Branka B. and Stanković, Dalibor",
year = "2018",
abstract = "In this work, the electrochemical behaviour and the subsequent development of an analytical procedure for quantification of pesticide azamethiphos, using boron-doped diamond (BDD) electrode are reported for the first time. It was found that azamethiphos electrochemical behaviour is irreversible oxidation at the potential of around 1.70 V, in 1 M nitric acid (pH 0). Also, it was found that potential of this oxidation was not pH dependent which can be attributed to the no proton involvement in electrochemical reaction on the electrode surface. The square wave voltammetric method was most appropriate for azamethiphos quantification. Under optimised experimental conditions, linear working range from 2 to 100 mu M was estimated with the detection limit of 0.45 mu M. Negligible effect of the possible interfering compound was observed. The obtained results show that the developed analytical methodology can be an adequate replacement for the, up to date, used methods for detection of organophosphorous pesticide.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "International Journal of Environmental Analytical Chemistry",
title = "First electrochemical investigation of organophosphorus pesticide azametiphos and its quantification using electroanalytical approach",
volume = "98",
number = "13",
pages = "1175-1185",
doi = "10.1080/03067319.2018.1537394"
}

Vukojević, V., Đurđić, S., Jevtic, S., Pergal, M., Markovic, A., Mutić, J., Petković, B. B.,& Stanković, D.. (2018). First electrochemical investigation of organophosphorus pesticide azametiphos and its quantification using electroanalytical approach. in International Journal of Environmental Analytical Chemistry
Taylor & Francis Ltd, Abingdon., 98(13), 1175-1185.
https://doi.org/10.1080/03067319.2018.1537394

Vukojević V, Đurđić S, Jevtic S, Pergal M, Markovic A, Mutić J, Petković BB, Stanković D. First electrochemical investigation of organophosphorus pesticide azametiphos and its quantification using electroanalytical approach. in International Journal of Environmental Analytical Chemistry. 2018;98(13):1175-1185.
doi:10.1080/03067319.2018.1537394 .

Vukojević, Vesna, Đurđić, Slađana, Jevtic, Sonja, Pergal, Marija, Markovic, Aleksandar, Mutić, Jelena, Petković, Branka B., Stanković, Dalibor, "First electrochemical investigation of organophosphorus pesticide azametiphos and its quantification using electroanalytical approach" in International Journal of Environmental Analytical Chemistry, 98, no. 13 (2018):1175-1185,
https://doi.org/10.1080/03067319.2018.1537394 . .

TY  - JOUR
AU  - Jevtic, Sonja
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana
AU  - Pergal, Marija
AU  - Manojlović, Dragan
AU  - Petković, Branka B.
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2479
AB  - This work present a new approach for the detection of relatively new herbicide pethoxamid (POA), a first electrochemical behavior and determination based on its oxidation on boron-doped diamond electrode in Britton-Robinson buffer solution at pH 4. Square wave voltammetric technique was used for quantification of POA at anodic potential of 1.35 V vs reference Ag/AgCl electrode. The proposed electroanalytical method is operational in the linear working range from 3 to 100 mu M of POA with a limit of detection of 1.37 mu M. The developed analytical procedure was successfully tested for determination of this herbicide in standard/spiked river water samples and commercial herbicide Successor T SE/spiked river water samples, offering a simple, fast and inexpensive alternative way of pesticide determining to chromatographic methods employed for this purpose.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Electrochimica Acta
T1  - First electrochemistry of herbicide pethoxamid and its quantification using electroanalytical approach from mixed commercial product
VL  - 277
SP  - 136
EP  - 142
DO  - 10.1016/j.electacta.2018.05.004
ER  - 

@article{
author = "Jevtic, Sonja and Vukojević, Vesna and Đurđić, Slađana and Pergal, Marija and Manojlović, Dragan and Petković, Branka B. and Stanković, Dalibor",
year = "2018",
abstract = "This work present a new approach for the detection of relatively new herbicide pethoxamid (POA), a first electrochemical behavior and determination based on its oxidation on boron-doped diamond electrode in Britton-Robinson buffer solution at pH 4. Square wave voltammetric technique was used for quantification of POA at anodic potential of 1.35 V vs reference Ag/AgCl electrode. The proposed electroanalytical method is operational in the linear working range from 3 to 100 mu M of POA with a limit of detection of 1.37 mu M. The developed analytical procedure was successfully tested for determination of this herbicide in standard/spiked river water samples and commercial herbicide Successor T SE/spiked river water samples, offering a simple, fast and inexpensive alternative way of pesticide determining to chromatographic methods employed for this purpose.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "First electrochemistry of herbicide pethoxamid and its quantification using electroanalytical approach from mixed commercial product",
volume = "277",
pages = "136-142",
doi = "10.1016/j.electacta.2018.05.004"
}

Jevtic, S., Vukojević, V., Đurđić, S., Pergal, M., Manojlović, D., Petković, B. B.,& Stanković, D.. (2018). First electrochemistry of herbicide pethoxamid and its quantification using electroanalytical approach from mixed commercial product. in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 277, 136-142.
https://doi.org/10.1016/j.electacta.2018.05.004

Jevtic S, Vukojević V, Đurđić S, Pergal M, Manojlović D, Petković BB, Stanković D. First electrochemistry of herbicide pethoxamid and its quantification using electroanalytical approach from mixed commercial product. in Electrochimica Acta. 2018;277:136-142.
doi:10.1016/j.electacta.2018.05.004 .

Jevtic, Sonja, Vukojević, Vesna, Đurđić, Slađana, Pergal, Marija, Manojlović, Dragan, Petković, Branka B., Stanković, Dalibor, "First electrochemistry of herbicide pethoxamid and its quantification using electroanalytical approach from mixed commercial product" in Electrochimica Acta, 277 (2018):136-142,
https://doi.org/10.1016/j.electacta.2018.05.004 . .

TY  - CONF
AU  - Jevtić, Sonja
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana
AU  - Pergal, Marija
AU  - Manojlović, Dragan
AU  - Petković, Branka B.
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3559
AB  - Pethoxamid (POA) is relatively new herbicide and it belongs to group of chloroacetamides. It inhibits the germination of target weeds in corn, soybeans, peas and beans, tobacco and other crops and it can affects on herbicide-resistant weeds. There are no many research records about this, in the future quite applicable, herbicide. Bearing in mind that pethoxamid is high soluble in water, with almost no sorption in soils [1], the leaching and runoff of this compound in ground and surface water is a real threat. Pethoxamid residues in soil, water food and feed of plant origin usually were determined by using liquid chromatography with tandem mass spectrometry (LC–MS/MS) [2] while some other analytical methods were used for determination of pesticides [3].
 The electroanalytical methods are noted as fast and cost-effective analytical methods for determination of many analytes of environmental interest. As far as we know, this is a first report about electrochemical behavior of herbicide pethoxamid and its electroanalytical determination. This method is based on the electrochemical oxidation of pethoxamid in Britton-Robinson buffer solution at pH 4 at a boron-doped diamond electrode. This type of carbon electrode is almost resistant to contamination of surface with various chemical spaces, easy to maintain and has a very wide working potential window which could provide insight into the electrochemical oxidation of pethoxamid at high anodic potentials. All electrochemical measurements (cyclic and square-wave voltammetry) were performed on PalmSens 3 potentiostat/galvanostat/impedance analyzer with PSTrace software (PalmSens BV, Netherlands). Three-electrode system in the electrochemical cell was consisted from Ag/AgCl (1M KCl) reference electrode and platinum wire counter electrode, while working electrode was boron-doped diamond electrode. BDD electrode
 was electrochemicaly prepared as it was written before [4]. Cyclic voltammetry provided a well defined oxidation peak at +1.35 V, and this peak was used as a peak of quantification at a optimal pH value 4 (Figure 1 a). The square-wave voltammetry was chosen as suitable technique for analytical determination of pethoxamid with an established optimal working conditions (pulse amplitude of 60 mV and frequency of 10 Hz). The voltammograms obtained for standard solutions from 1 to 100 μM and corresponding calibration curve were shown on Figure 1 b. The method was applied for selective quantification of pethoxamid from spiked river water samples with good recovery of 92.0 to 104.6% for standard solutions of POA and good agreement with comparative HPLC method (97.6-98.1%). The results of this research indicate successful, fast, simple, reliable and cheap estimation of pethoxamid content in the surface water samples with no electrode surface modification and time-consuming sample preparation.
PB  - Srpsko hemijsko društvo, Karnegijeva 4/III, Beograd, Srbija / Serbian Chemical Society, Karnegijeva 4/III, Belgrade, Serbia
C3  - 8. Simpozijum Hemija i zaštita životne sredine (sa međunarodnim učešćem) / 8th Symposium Chemistry and Environmental Protection (with international participation), 30.5-01.06.2018., Kruševac, Serbia
T1  - First study of electrochemical behavior of herbicide pethoxamid and its voltammetric determination in river water
SP  - 111
EP  - 112
UR  - https://hdl.handle.net/21.15107/rcub_cer_3559
ER  - 

@conference{
author = "Jevtić, Sonja and Vukojević, Vesna and Đurđić, Slađana and Pergal, Marija and Manojlović, Dragan and Petković, Branka B. and Stanković, Dalibor",
year = "2018",
abstract = "Pethoxamid (POA) is relatively new herbicide and it belongs to group of chloroacetamides. It inhibits the germination of target weeds in corn, soybeans, peas and beans, tobacco and other crops and it can affects on herbicide-resistant weeds. There are no many research records about this, in the future quite applicable, herbicide. Bearing in mind that pethoxamid is high soluble in water, with almost no sorption in soils [1], the leaching and runoff of this compound in ground and surface water is a real threat. Pethoxamid residues in soil, water food and feed of plant origin usually were determined by using liquid chromatography with tandem mass spectrometry (LC–MS/MS) [2] while some other analytical methods were used for determination of pesticides [3].
 The electroanalytical methods are noted as fast and cost-effective analytical methods for determination of many analytes of environmental interest. As far as we know, this is a first report about electrochemical behavior of herbicide pethoxamid and its electroanalytical determination. This method is based on the electrochemical oxidation of pethoxamid in Britton-Robinson buffer solution at pH 4 at a boron-doped diamond electrode. This type of carbon electrode is almost resistant to contamination of surface with various chemical spaces, easy to maintain and has a very wide working potential window which could provide insight into the electrochemical oxidation of pethoxamid at high anodic potentials. All electrochemical measurements (cyclic and square-wave voltammetry) were performed on PalmSens 3 potentiostat/galvanostat/impedance analyzer with PSTrace software (PalmSens BV, Netherlands). Three-electrode system in the electrochemical cell was consisted from Ag/AgCl (1M KCl) reference electrode and platinum wire counter electrode, while working electrode was boron-doped diamond electrode. BDD electrode
 was electrochemicaly prepared as it was written before [4]. Cyclic voltammetry provided a well defined oxidation peak at +1.35 V, and this peak was used as a peak of quantification at a optimal pH value 4 (Figure 1 a). The square-wave voltammetry was chosen as suitable technique for analytical determination of pethoxamid with an established optimal working conditions (pulse amplitude of 60 mV and frequency of 10 Hz). The voltammograms obtained for standard solutions from 1 to 100 μM and corresponding calibration curve were shown on Figure 1 b. The method was applied for selective quantification of pethoxamid from spiked river water samples with good recovery of 92.0 to 104.6% for standard solutions of POA and good agreement with comparative HPLC method (97.6-98.1%). The results of this research indicate successful, fast, simple, reliable and cheap estimation of pethoxamid content in the surface water samples with no electrode surface modification and time-consuming sample preparation.",
publisher = "Srpsko hemijsko društvo, Karnegijeva 4/III, Beograd, Srbija / Serbian Chemical Society, Karnegijeva 4/III, Belgrade, Serbia",
journal = "8. Simpozijum Hemija i zaštita životne sredine (sa međunarodnim učešćem) / 8th Symposium Chemistry and Environmental Protection (with international participation), 30.5-01.06.2018., Kruševac, Serbia",
title = "First study of electrochemical behavior of herbicide pethoxamid and its voltammetric determination in river water",
pages = "111-112",
url = "https://hdl.handle.net/21.15107/rcub_cer_3559"
}

Jevtić, S., Vukojević, V., Đurđić, S., Pergal, M., Manojlović, D., Petković, B. B.,& Stanković, D.. (2018). First study of electrochemical behavior of herbicide pethoxamid and its voltammetric determination in river water. in 8. Simpozijum Hemija i zaštita životne sredine (sa međunarodnim učešćem) / 8th Symposium Chemistry and Environmental Protection (with international participation), 30.5-01.06.2018., Kruševac, Serbia
Srpsko hemijsko društvo, Karnegijeva 4/III, Beograd, Srbija / Serbian Chemical Society, Karnegijeva 4/III, Belgrade, Serbia., 111-112.
https://hdl.handle.net/21.15107/rcub_cer_3559

Jevtić S, Vukojević V, Đurđić S, Pergal M, Manojlović D, Petković BB, Stanković D. First study of electrochemical behavior of herbicide pethoxamid and its voltammetric determination in river water. in 8. Simpozijum Hemija i zaštita životne sredine (sa međunarodnim učešćem) / 8th Symposium Chemistry and Environmental Protection (with international participation), 30.5-01.06.2018., Kruševac, Serbia. 2018;:111-112.
https://hdl.handle.net/21.15107/rcub_cer_3559 .

Jevtić, Sonja, Vukojević, Vesna, Đurđić, Slađana, Pergal, Marija, Manojlović, Dragan, Petković, Branka B., Stanković, Dalibor, "First study of electrochemical behavior of herbicide pethoxamid and its voltammetric determination in river water" in 8. Simpozijum Hemija i zaštita životne sredine (sa međunarodnim učešćem) / 8th Symposium Chemistry and Environmental Protection (with international participation), 30.5-01.06.2018., Kruševac, Serbia (2018):111-112,
https://hdl.handle.net/21.15107/rcub_cer_3559 .