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://vinar.vin.bg.ac.rs/handle/123456789/12205
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.
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.",
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, 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  - Mijajlović, Aleksandar
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Đurđić, Slađana
AU  - Manojlović, Dragan
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13021
AB  - Excessive pesticide use can harm human health, making it essential to develop new techniques to monitor hazardous pesticides in food. Our study focuses on detecting mesotrione (MST) using an unmodified boron-doped diamond (BDD) electrode. This was the first application of cathodically pretreated BDD electrode for the detection of MST, based on its oxidation at a high potential value of +1.4 V. We theoretically examined the oxidation mechanism of MST trough the utilization of density functional theory (DFT) methodology. The utilized DPV method achieved a detection limit of 0.45 μM and showed satisfactory selectivity. The practical application of this method was demonstrated by examining corn-based food products. To ensure practical application of the method, MST was deliberately added to the samples to evaluate the accuracy of the proposed method. The effectiveness of the method was confirmed by using HPLC method. This environmentally-friendly approach can establish a solid foundation for future use in food analysis.
T2  - Food Chemistry
T1  - The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples
VL  - 447
SP  - 138993
DO  - 10.1016/j.foodchem.2024.138993
ER  - 

@article{
author = "Mijajlović, Aleksandar and Stanković, Vesna and Vlahović, Filip and Đurđić, Slađana and Manojlović, Dragan and Stanković, Dalibor",
year = "2024",
abstract = "Excessive pesticide use can harm human health, making it essential to develop new techniques to monitor hazardous pesticides in food. Our study focuses on detecting mesotrione (MST) using an unmodified boron-doped diamond (BDD) electrode. This was the first application of cathodically pretreated BDD electrode for the detection of MST, based on its oxidation at a high potential value of +1.4 V. We theoretically examined the oxidation mechanism of MST trough the utilization of density functional theory (DFT) methodology. The utilized DPV method achieved a detection limit of 0.45 μM and showed satisfactory selectivity. The practical application of this method was demonstrated by examining corn-based food products. To ensure practical application of the method, MST was deliberately added to the samples to evaluate the accuracy of the proposed method. The effectiveness of the method was confirmed by using HPLC method. This environmentally-friendly approach can establish a solid foundation for future use in food analysis.",
journal = "Food Chemistry",
title = "The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples",
volume = "447",
pages = "138993",
doi = "10.1016/j.foodchem.2024.138993"
}

Mijajlović, A., Stanković, V., Vlahović, F., Đurđić, S., Manojlović, D.,& Stanković, D.. (2024). The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples. in Food Chemistry, 447, 138993.
https://doi.org/10.1016/j.foodchem.2024.138993

Mijajlović A, Stanković V, Vlahović F, Đurđić S, Manojlović D, Stanković D. The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples. in Food Chemistry. 2024;447:138993.
doi:10.1016/j.foodchem.2024.138993 .

Mijajlović, Aleksandar, Stanković, Vesna, Vlahović, Filip, Đurđić, Slađana, Manojlović, Dragan, Stanković, Dalibor, "The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples" in Food Chemistry, 447 (2024):138993,
https://doi.org/10.1016/j.foodchem.2024.138993 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Zlatić, Gloria
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12670
AB  - In this study, we propose an eco-friendly method for synthesizing cerium tungstate nanoparticles using hydrothermal techniques. We used scanning, transmission electron microscopy, and X-ray diffraction to analyze the morphology of the synthesized nanoparticles. The results showed that the synthesized nanoparticles were uniform and highly crystalline, with a particle size of about 50 nm. The electrocatalytic properties of the nanoparticles were then investigated using cyclic voltammetry and electrochemical impedance spectroscopy. We further used the synthesized nanoparticles to develop an electrochemical sensor based on a carbon paste electrode that can detect hydroquinone. By optimizing the differential pulse voltammetric method, a wide linearity range of 0.4 to 45 µM and a low detection limit of 0.06 µM were obtained. The developed sensor also expressed excellent repeatability (RSD up to 3.8%) and reproducibility (RSD below 5%). Interferences had an insignificant impact on the determination of analytes, making it possible to use this method for monitoring hydroquinone concentrations in tap water. This study introduces a new approach to the chemistry of materials and the environment and demonstrates that a careful selection of components can lead to new horizons in analytical chemistry.
T2  - Sensors
T1  - Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples
VL  - 24
IS  - 2
SP  - 705
DO  - 10.3390/s24020705
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana and Ognjanović, Miloš and Zlatić, Gloria and Stanković, Dalibor",
year = "2024",
abstract = "In this study, we propose an eco-friendly method for synthesizing cerium tungstate nanoparticles using hydrothermal techniques. We used scanning, transmission electron microscopy, and X-ray diffraction to analyze the morphology of the synthesized nanoparticles. The results showed that the synthesized nanoparticles were uniform and highly crystalline, with a particle size of about 50 nm. The electrocatalytic properties of the nanoparticles were then investigated using cyclic voltammetry and electrochemical impedance spectroscopy. We further used the synthesized nanoparticles to develop an electrochemical sensor based on a carbon paste electrode that can detect hydroquinone. By optimizing the differential pulse voltammetric method, a wide linearity range of 0.4 to 45 µM and a low detection limit of 0.06 µM were obtained. The developed sensor also expressed excellent repeatability (RSD up to 3.8%) and reproducibility (RSD below 5%). Interferences had an insignificant impact on the determination of analytes, making it possible to use this method for monitoring hydroquinone concentrations in tap water. This study introduces a new approach to the chemistry of materials and the environment and demonstrates that a careful selection of components can lead to new horizons in analytical chemistry.",
journal = "Sensors",
title = "Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples",
volume = "24",
number = "2",
pages = "705",
doi = "10.3390/s24020705"
}

Stanković, V., Đurđić, S., Ognjanović, M., Zlatić, G.,& Stanković, D.. (2024). Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples. in Sensors, 24(2), 705.
https://doi.org/10.3390/s24020705

Stanković V, Đurđić S, Ognjanović M, Zlatić G, Stanković D. Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples. in Sensors. 2024;24(2):705.
doi:10.3390/s24020705 .

Stanković, Vesna, Đurđić, Slađana, Ognjanović, Miloš, Zlatić, Gloria, Stanković, Dalibor, "Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples" in Sensors, 24, no. 2 (2024):705,
https://doi.org/10.3390/s24020705 . .

TY  - JOUR
AU  - Knežević, Sara
AU  - Ostojić, Jelena
AU  - Ognjanović, Miloš
AU  - Savić, Slađana
AU  - Kovačević, Aleksandra
AU  - Manojlović, Dragan
AU  - Stanković, Vesna
AU  - Stanković, Dalibor M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10468
AB  - Triclosan (TCS) is a polychlorinated phenoxy phenol (PCPPs) used as a disinfectant and a broad-spectrum antibacterial and antifungal agent in personal hygiene products. TCS easily forms diphenyl ethers and dioxins, which are persistent organic pollutants. This work used a double approach for the TSC sensing: a) screen-printed (SPE) electrochemical platform for on-site application, modified with lanthanum iron oxide and graphitic carbon nitride composite (LaFeO3/Fe2O3@g-C3N4/SPE); and b) carbon paste electrode (CPE), modified with the same material and used in laboratory conditions. Linear range from 0.1 μM to 10 μM, the limit of detection (LOD) of 29 nM and the limit of quantification (LOQ) of 91 nM were obtained for CP electrode in BRBS pH 8. SPE showed the best analytical parameters in BRBS at pH 3, with a linear range from 0.3 μM to 7 μM, LOD of 0.09 μM and LOQ of 0.28 μM. Furthermore, the influence of potential interferents was investigated and proven to be negligible. Determination of TSC was performed to estimate the environmental impact of this compound as well as the practical usefulness of the proposed sensor in the real sample analysis, confirmed with a HPLC analysis. © 2022 Elsevier B.V.
T2  - Science of the Total Environment
T1  - The environmentally friendly approaches based on the heterojunction interface of the LaFeO3/Fe2O3@g-C3N4 composite for the disposable and laboratory sensing of triclosan
VL  - 857
DO  - 10.1016/j.scitotenv.2022.159250
ER  - 

@article{
author = "Knežević, Sara and Ostojić, Jelena and Ognjanović, Miloš and Savić, Slađana and Kovačević, Aleksandra and Manojlović, Dragan and Stanković, Vesna and Stanković, Dalibor M.",
year = "2023",
abstract = "Triclosan (TCS) is a polychlorinated phenoxy phenol (PCPPs) used as a disinfectant and a broad-spectrum antibacterial and antifungal agent in personal hygiene products. TCS easily forms diphenyl ethers and dioxins, which are persistent organic pollutants. This work used a double approach for the TSC sensing: a) screen-printed (SPE) electrochemical platform for on-site application, modified with lanthanum iron oxide and graphitic carbon nitride composite (LaFeO3/Fe2O3@g-C3N4/SPE); and b) carbon paste electrode (CPE), modified with the same material and used in laboratory conditions. Linear range from 0.1 μM to 10 μM, the limit of detection (LOD) of 29 nM and the limit of quantification (LOQ) of 91 nM were obtained for CP electrode in BRBS pH 8. SPE showed the best analytical parameters in BRBS at pH 3, with a linear range from 0.3 μM to 7 μM, LOD of 0.09 μM and LOQ of 0.28 μM. Furthermore, the influence of potential interferents was investigated and proven to be negligible. Determination of TSC was performed to estimate the environmental impact of this compound as well as the practical usefulness of the proposed sensor in the real sample analysis, confirmed with a HPLC analysis. © 2022 Elsevier B.V.",
journal = "Science of the Total Environment",
title = "The environmentally friendly approaches based on the heterojunction interface of the LaFeO3/Fe2O3@g-C3N4 composite for the disposable and laboratory sensing of triclosan",
volume = "857",
doi = "10.1016/j.scitotenv.2022.159250"
}

Knežević, S., Ostojić, J., Ognjanović, M., Savić, S., Kovačević, A., Manojlović, D., Stanković, V.,& Stanković, D. M.. (2023). The environmentally friendly approaches based on the heterojunction interface of the LaFeO3/Fe2O3@g-C3N4 composite for the disposable and laboratory sensing of triclosan. in Science of the Total Environment, 857.
https://doi.org/10.1016/j.scitotenv.2022.159250

Knežević S, Ostojić J, Ognjanović M, Savić S, Kovačević A, Manojlović D, Stanković V, Stanković DM. The environmentally friendly approaches based on the heterojunction interface of the LaFeO3/Fe2O3@g-C3N4 composite for the disposable and laboratory sensing of triclosan. in Science of the Total Environment. 2023;857.
doi:10.1016/j.scitotenv.2022.159250 .

Knežević, Sara, Ostojić, Jelena, Ognjanović, Miloš, Savić, Slađana, Kovačević, Aleksandra, Manojlović, Dragan, Stanković, Vesna, Stanković, Dalibor M., "The environmentally friendly approaches based on the heterojunction interface of the LaFeO3/Fe2O3@g-C3N4 composite for the disposable and laboratory sensing of triclosan" in Science of the Total Environment, 857 (2023),
https://doi.org/10.1016/j.scitotenv.2022.159250 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Vlahović, Filip
AU  - Markićević, Milan
AU  - Mutić, Jelena
AU  - Manojlović, Dragan
AU  - Stanković, Vesna
AU  - Švorc, Lubomír
AU  - Stanković, Dalibor M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10618
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.
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, Lubomír and Stanković, Dalibor M.",
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.",
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, L.,& Stanković, D. M.. (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, 11(1), 15.
https://doi.org/10.3390/chemosensors11010015

Đurđić S, Vlahović F, Markićević M, Mutić J, Manojlović D, Stanković V, Švorc L, Stanković DM. 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, Lubomír, Stanković, Dalibor M., "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  - Korina, Elena
AU  - Abramyan, Anton
AU  - Bol’shakov, Oleg
AU  - Avdin, Vyacheslav V.
AU  - Savić, Slađana
AU  - Manojlović, Dragan D.
AU  - Stanković, Vesna
AU  - Stanković, Dalibor M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10621
AB  - Stable, water-soluble titanium complexed with mandelic acid was used as a precursor for titanium phosphorus double oxide obtained in hydrothermal conditions in the presence of phosphoric acid. Surprisingly, hydrolysis of organic complexes provided a microstructured sphere with narrow size distribution, low aggregation and a small fraction of morphological irregularities. Obtained microspheres had a complex structure comprised of flakes, whose size could be manipulated with temperature conditions. Samples were found to be electrochemically active against sulcotrione, a well-recognized herbicide. Electrochemical sensors based on the synthesized microspheres were successfully adapted for natural water reservoir analysis and exhibited low levels of detection of 0.61 µM, limit of quantification of 1.86 µM, wide dynamic linear range from 2 to 200 µM, good selectivity, excellent reproducibility and in-time stability.
T2  - Sensors
T1  - Microspherical Titanium-Phosphorus Double Oxide: Hierarchical Structure Development for Sensing Applications
VL  - 23
IS  - 2
SP  - 933
DO  - 10.3390/s23020933
ER  - 

@article{
author = "Korina, Elena and Abramyan, Anton and Bol’shakov, Oleg and Avdin, Vyacheslav V. and Savić, Slađana and Manojlović, Dragan D. and Stanković, Vesna and Stanković, Dalibor M.",
year = "2023",
abstract = "Stable, water-soluble titanium complexed with mandelic acid was used as a precursor for titanium phosphorus double oxide obtained in hydrothermal conditions in the presence of phosphoric acid. Surprisingly, hydrolysis of organic complexes provided a microstructured sphere with narrow size distribution, low aggregation and a small fraction of morphological irregularities. Obtained microspheres had a complex structure comprised of flakes, whose size could be manipulated with temperature conditions. Samples were found to be electrochemically active against sulcotrione, a well-recognized herbicide. Electrochemical sensors based on the synthesized microspheres were successfully adapted for natural water reservoir analysis and exhibited low levels of detection of 0.61 µM, limit of quantification of 1.86 µM, wide dynamic linear range from 2 to 200 µM, good selectivity, excellent reproducibility and in-time stability.",
journal = "Sensors",
title = "Microspherical Titanium-Phosphorus Double Oxide: Hierarchical Structure Development for Sensing Applications",
volume = "23",
number = "2",
pages = "933",
doi = "10.3390/s23020933"
}

Korina, E., Abramyan, A., Bol’shakov, O., Avdin, V. V., Savić, S., Manojlović, D. D., Stanković, V.,& Stanković, D. M.. (2023). Microspherical Titanium-Phosphorus Double Oxide: Hierarchical Structure Development for Sensing Applications. in Sensors, 23(2), 933.
https://doi.org/10.3390/s23020933

Korina E, Abramyan A, Bol’shakov O, Avdin VV, Savić S, Manojlović DD, Stanković V, Stanković DM. Microspherical Titanium-Phosphorus Double Oxide: Hierarchical Structure Development for Sensing Applications. in Sensors. 2023;23(2):933.
doi:10.3390/s23020933 .

Korina, Elena, Abramyan, Anton, Bol’shakov, Oleg, Avdin, Vyacheslav V., Savić, Slađana, Manojlović, Dragan D., Stanković, Vesna, Stanković, Dalibor M., "Microspherical Titanium-Phosphorus Double Oxide: Hierarchical Structure Development for Sensing Applications" in Sensors, 23, no. 2 (2023):933,
https://doi.org/10.3390/s23020933 . .

TY  - JOUR
AU  - Mijajlović, Aleksandar
AU  - Ognjanović, Miloš
AU  - Manojlović, Dragan
AU  - Vlahović, Filip
AU  - Ðurđić, Slađana
AU  - Stanković, Vesna
AU  - Stanković, Dalibor M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10692
AB  - There are ten million people in the world who have Parkinson’s disease. The most potent medicine for Parkinson’s disease is levodopa (L-DOPA). However, long-term consumption of L-DOPA leads to the appearance of side effects, as a result of which the control and monitoring of its concentrations are of great importance. In this work, we have designed a new electrochemical sensor for detecting L-DOPA using a carbon paste electrode (CPE) modified with Eu2O3@Cr2O3 composite nanoparticles. Rare earth elements, including Eu, are increasingly used to design new electrode nanocomposites with enhanced electrocatalytic properties. Europium has been considered a significant lanthanide element with greater redox reaction behavior. We conducted a hydrothermal synthesis of Eu2O3@Cr2O3 and, for the first time, the acquired nanoparticles were used to modify CPE. The proposed Eu2O3@Cr2O3/CPE electrode was investigated in terms of its electrocatalytic properties and then used to develop an analytical method for detecting and quantifying L-DOPA. The proposed sensor offers a wide linear range (1–100 µM), high sensitivity (1.38 µA µM−1 cm−2) and a low detection limit (0.72 µM). The practical application of the proposed sensor was investigated by analyzing commercially available pharmaceutical tablets of L-DOPA. The corresponding results indicate the excellent potential of the Eu2O3@Cr2O3/CPE sensor for application in real-time L-DOPA detection.
T2  - Biosensors
T1  - Eu2O3@Cr2O3 Nanoparticles-Modified Carbon Paste Electrode for Efficient Electrochemical Sensing of Neurotransmitters Precursor L-DOPA
VL  - 13
IS  - 2
SP  - 201
DO  - 10.3390/bios13020201
ER  - 

@article{
author = "Mijajlović, Aleksandar and Ognjanović, Miloš and Manojlović, Dragan and Vlahović, Filip and Ðurđić, Slađana and Stanković, Vesna and Stanković, Dalibor M.",
year = "2023",
abstract = "There are ten million people in the world who have Parkinson’s disease. The most potent medicine for Parkinson’s disease is levodopa (L-DOPA). However, long-term consumption of L-DOPA leads to the appearance of side effects, as a result of which the control and monitoring of its concentrations are of great importance. In this work, we have designed a new electrochemical sensor for detecting L-DOPA using a carbon paste electrode (CPE) modified with Eu2O3@Cr2O3 composite nanoparticles. Rare earth elements, including Eu, are increasingly used to design new electrode nanocomposites with enhanced electrocatalytic properties. Europium has been considered a significant lanthanide element with greater redox reaction behavior. We conducted a hydrothermal synthesis of Eu2O3@Cr2O3 and, for the first time, the acquired nanoparticles were used to modify CPE. The proposed Eu2O3@Cr2O3/CPE electrode was investigated in terms of its electrocatalytic properties and then used to develop an analytical method for detecting and quantifying L-DOPA. The proposed sensor offers a wide linear range (1–100 µM), high sensitivity (1.38 µA µM−1 cm−2) and a low detection limit (0.72 µM). The practical application of the proposed sensor was investigated by analyzing commercially available pharmaceutical tablets of L-DOPA. The corresponding results indicate the excellent potential of the Eu2O3@Cr2O3/CPE sensor for application in real-time L-DOPA detection.",
journal = "Biosensors",
title = "Eu2O3@Cr2O3 Nanoparticles-Modified Carbon Paste Electrode for Efficient Electrochemical Sensing of Neurotransmitters Precursor L-DOPA",
volume = "13",
number = "2",
pages = "201",
doi = "10.3390/bios13020201"
}

Mijajlović, A., Ognjanović, M., Manojlović, D., Vlahović, F., Ðurđić, S., Stanković, V.,& Stanković, D. M.. (2023). Eu2O3@Cr2O3 Nanoparticles-Modified Carbon Paste Electrode for Efficient Electrochemical Sensing of Neurotransmitters Precursor L-DOPA. in Biosensors, 13(2), 201.
https://doi.org/10.3390/bios13020201

Mijajlović A, Ognjanović M, Manojlović D, Vlahović F, Ðurđić S, Stanković V, Stanković DM. Eu2O3@Cr2O3 Nanoparticles-Modified Carbon Paste Electrode for Efficient Electrochemical Sensing of Neurotransmitters Precursor L-DOPA. in Biosensors. 2023;13(2):201.
doi:10.3390/bios13020201 .

Mijajlović, Aleksandar, Ognjanović, Miloš, Manojlović, Dragan, Vlahović, Filip, Ðurđić, Slađana, Stanković, Vesna, Stanković, Dalibor M., "Eu2O3@Cr2O3 Nanoparticles-Modified Carbon Paste Electrode for Efficient Electrochemical Sensing of Neurotransmitters Precursor L-DOPA" in Biosensors, 13, no. 2 (2023):201,
https://doi.org/10.3390/bios13020201 . .

TY  - CONF
AU  - Mutić, Tijana
AU  - Ognjanović, Miloš
AU  - Stanković, Vesna
AU  - Stanković, Dalibor
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11674
AB  - Quinine is a natural white crystalline cinchona alkaloid that belongs to the aryl amino alcohol group of drugs, and it has antipyretic (fever reducing), antimalarial, analgesic, anti-inflammatory properties and a bitter taste. Today, quinine is considered as the best antimalarial drug since it is chiefly used in the treatment of falciparum malaria resistant to other antimalarials. Quinine is preferred where the disease has become highly resistant to other antimalarial drugs [1]. Quinine has a low therapeutic index, and it is potentially toxic and causes several side effects including nausea, blurred vision, diarrhea, abdominal pain, headache, fever, renal failure and asthma [2]. Since quinine is widely used as a bittering agent in tonic type drinks, a sensitive and discriminatory system for the discovery of quinine is essential for human health. In this work, a modified bismuth-oxychloride (BiOCl) carbon paste electrode was prepared for the detection of quinine. BiOCl nanoparticles were synthesized by the chemical coprecipitation method. The electrochemical properties of quinine at this electrode were investigated by cyclic voltammetry (CV), square wave voltammetry (SWV), and differential pulse voltammetry (DPV). In addition, electrochemical impedance spectroscopy (EIS), inductively coupled plasma–optical emission spectrometry (ICP-OES), transmission and scanning electron microscopy (TEM and SEM) and X-ray diffraction (XRD) were used to characterize the synthesized materials. The prepared electrode showed better electrocatalytic response than the bare carbon paste electrode. After square wave voltammetry (SWV) optimization, the electrode showed a wide linear working range from 20 to 200 μM at pH 6 of Britton–Robinson buffer solution (BRBS) as the supporting electrolyte. The excellent selectivity of the proposed method, with good repeatability and reproducibility, strongly suggests a potential application of the method for the determination of quinine in pharmaceuticals. The practicality with good recoveries indicates that the morphology of the materials is closely related to other parameters, which in turn suggests that the developed approach can provide a cost effective, rapid, selective, and sensitive method for quinine monitoring.
PB  - University of Belgrade : Faculty of Chemistry
C3  - YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry :  the book of abstracts; June 25-28, Belgrade
T1  - Fabrication of bismuth-oxychloride supported carbon paste electrode for sensitive Quinine sensing
SP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11674
ER  - 

@conference{
author = "Mutić, Tijana and Ognjanović, Miloš and Stanković, Vesna and Stanković, Dalibor",
year = "2023",
abstract = "Quinine is a natural white crystalline cinchona alkaloid that belongs to the aryl amino alcohol group of drugs, and it has antipyretic (fever reducing), antimalarial, analgesic, anti-inflammatory properties and a bitter taste. Today, quinine is considered as the best antimalarial drug since it is chiefly used in the treatment of falciparum malaria resistant to other antimalarials. Quinine is preferred where the disease has become highly resistant to other antimalarial drugs [1]. Quinine has a low therapeutic index, and it is potentially toxic and causes several side effects including nausea, blurred vision, diarrhea, abdominal pain, headache, fever, renal failure and asthma [2]. Since quinine is widely used as a bittering agent in tonic type drinks, a sensitive and discriminatory system for the discovery of quinine is essential for human health. In this work, a modified bismuth-oxychloride (BiOCl) carbon paste electrode was prepared for the detection of quinine. BiOCl nanoparticles were synthesized by the chemical coprecipitation method. The electrochemical properties of quinine at this electrode were investigated by cyclic voltammetry (CV), square wave voltammetry (SWV), and differential pulse voltammetry (DPV). In addition, electrochemical impedance spectroscopy (EIS), inductively coupled plasma–optical emission spectrometry (ICP-OES), transmission and scanning electron microscopy (TEM and SEM) and X-ray diffraction (XRD) were used to characterize the synthesized materials. The prepared electrode showed better electrocatalytic response than the bare carbon paste electrode. After square wave voltammetry (SWV) optimization, the electrode showed a wide linear working range from 20 to 200 μM at pH 6 of Britton–Robinson buffer solution (BRBS) as the supporting electrolyte. The excellent selectivity of the proposed method, with good repeatability and reproducibility, strongly suggests a potential application of the method for the determination of quinine in pharmaceuticals. The practicality with good recoveries indicates that the morphology of the materials is closely related to other parameters, which in turn suggests that the developed approach can provide a cost effective, rapid, selective, and sensitive method for quinine monitoring.",
publisher = "University of Belgrade : Faculty of Chemistry",
journal = "YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry :  the book of abstracts; June 25-28, Belgrade",
title = "Fabrication of bismuth-oxychloride supported carbon paste electrode for sensitive Quinine sensing",
pages = "25",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11674"
}

Mutić, T., Ognjanović, M., Stanković, V.,& Stanković, D.. (2023). Fabrication of bismuth-oxychloride supported carbon paste electrode for sensitive Quinine sensing. in YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry :  the book of abstracts; June 25-28, Belgrade
University of Belgrade : Faculty of Chemistry., 25.
https://hdl.handle.net/21.15107/rcub_vinar_11674

Mutić T, Ognjanović M, Stanković V, Stanković D. Fabrication of bismuth-oxychloride supported carbon paste electrode for sensitive Quinine sensing. in YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry :  the book of abstracts; June 25-28, Belgrade. 2023;:25.
https://hdl.handle.net/21.15107/rcub_vinar_11674 .

Mutić, Tijana, Ognjanović, Miloš, Stanković, Vesna, Stanković, Dalibor, "Fabrication of bismuth-oxychloride supported carbon paste electrode for sensitive Quinine sensing" in YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry :  the book of abstracts; June 25-28, Belgrade (2023):25,
https://hdl.handle.net/21.15107/rcub_vinar_11674 .

TY  - CONF
AU  - Mijajlović, Aleksandar
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Manojlović, Dragana
AU  - Stanković, Dalibor
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11960
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  - YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts
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_vinar_11960
ER  - 

@conference{
author = "Mijajlović, Aleksandar and Stanković, Vesna and Đurđić, Slađana and Manojlović, Dragana 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 = "YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts",
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_vinar_11960"
}

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 YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts
University of Belgrade : Faculty of Chemistry., 26-26.
https://hdl.handle.net/21.15107/rcub_vinar_11960

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 YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts. 2023;:26-26.
https://hdl.handle.net/21.15107/rcub_vinar_11960 .

Mijajlović, Aleksandar, Stanković, Vesna, Đurđić, Slađana, Manojlović, Dragana, 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 YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts (2023):26-26,
https://hdl.handle.net/21.15107/rcub_vinar_11960 .

TY  - JOUR
AU  - Knežević, Sara
AU  - Ognjanović, Miloš
AU  - Stanković, Vesna
AU  - Zlatanova, Milena
AU  - Nešić, Andrijana
AU  - Gavrović-Jankulović, Marija
AU  - Stanković, Dalibor M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10430
AB  - This paper aims to develop an amperometric, non-enzymatic sensor for detecting and quantifying UA as an alert signal induced by allergens with protease activity in human cell lines (HEK293 and HeLa). Uric acid (UA) has been classified as a damage-associated molecular pattern (DAMP) molecule that serves a physiological purpose inside the cell, while outside the cell it can be an indicator of cell damage. Cell damage or stress can be caused by different health problems or by environmental irritants, such as allergens. We can act and prevent the events that generate stress by determining the extent to which cells are under stress. Amperometric calibration measurements were performed with a carbon paste electrode modified with La(OH)3@MWCNT, at the potential of 0.3 V. The calibration curve was constructed in a linear operating range from 0.67 μM to 121 μM UA. The proposed sensor displayed good reproducibility with an RSD of 3.65% calculated for five subsequent measurements, and a low detection limit of 64.28 nM, determined using the 3 S/m method. Interference studies and the real sample analysis of allergen-treated cell lines proved that the proposed sensing platform possesses excellent sensitivity, reproducibility, and stability. Therefore, it can potentially be used to evaluate stress factors in medical research and clinical practice.
T2  - Biosensors
T1  - La(OH)3 Multi-Walled Carbon Nanotube/Carbon Paste-Based Sensing Approach for the Detection of Uric Acid—A Product of Environmentally Stressed Cells
VL  - 12
IS  - 9
SP  - 705
DO  - 10.3390/bios12090705
ER  - 

@article{
author = "Knežević, Sara and Ognjanović, Miloš and Stanković, Vesna and Zlatanova, Milena and Nešić, Andrijana and Gavrović-Jankulović, Marija and Stanković, Dalibor M.",
year = "2022",
abstract = "This paper aims to develop an amperometric, non-enzymatic sensor for detecting and quantifying UA as an alert signal induced by allergens with protease activity in human cell lines (HEK293 and HeLa). Uric acid (UA) has been classified as a damage-associated molecular pattern (DAMP) molecule that serves a physiological purpose inside the cell, while outside the cell it can be an indicator of cell damage. Cell damage or stress can be caused by different health problems or by environmental irritants, such as allergens. We can act and prevent the events that generate stress by determining the extent to which cells are under stress. Amperometric calibration measurements were performed with a carbon paste electrode modified with La(OH)3@MWCNT, at the potential of 0.3 V. The calibration curve was constructed in a linear operating range from 0.67 μM to 121 μM UA. The proposed sensor displayed good reproducibility with an RSD of 3.65% calculated for five subsequent measurements, and a low detection limit of 64.28 nM, determined using the 3 S/m method. Interference studies and the real sample analysis of allergen-treated cell lines proved that the proposed sensing platform possesses excellent sensitivity, reproducibility, and stability. Therefore, it can potentially be used to evaluate stress factors in medical research and clinical practice.",
journal = "Biosensors",
title = "La(OH)3 Multi-Walled Carbon Nanotube/Carbon Paste-Based Sensing Approach for the Detection of Uric Acid—A Product of Environmentally Stressed Cells",
volume = "12",
number = "9",
pages = "705",
doi = "10.3390/bios12090705"
}

Knežević, S., Ognjanović, M., Stanković, V., Zlatanova, M., Nešić, A., Gavrović-Jankulović, M.,& Stanković, D. M.. (2022). La(OH)3 Multi-Walled Carbon Nanotube/Carbon Paste-Based Sensing Approach for the Detection of Uric Acid—A Product of Environmentally Stressed Cells. in Biosensors, 12(9), 705.
https://doi.org/10.3390/bios12090705

Knežević S, Ognjanović M, Stanković V, Zlatanova M, Nešić A, Gavrović-Jankulović M, Stanković DM. La(OH)3 Multi-Walled Carbon Nanotube/Carbon Paste-Based Sensing Approach for the Detection of Uric Acid—A Product of Environmentally Stressed Cells. in Biosensors. 2022;12(9):705.
doi:10.3390/bios12090705 .

Knežević, Sara, Ognjanović, Miloš, Stanković, Vesna, Zlatanova, Milena, Nešić, Andrijana, Gavrović-Jankulović, Marija, Stanković, Dalibor M., "La(OH)3 Multi-Walled Carbon Nanotube/Carbon Paste-Based Sensing Approach for the Detection of Uric Acid—A Product of Environmentally Stressed Cells" in Biosensors, 12, no. 9 (2022):705,
https://doi.org/10.3390/bios12090705 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, Kurt
AU  - Manojlović, Dragan D.
AU  - Mutić, Jelena
AU  - Stanković, Dalibor M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9816
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.
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 D. 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.",
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. 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, 168, 106416.
https://doi.org/10.1016/j.microc.2021.106416

Đurđić S, Stanković V, Vlahović F, Ognjanović M, Kalcher K, Manojlović DD, 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 D., 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  - Stanković, Dalibor M.
AU  - Milanović, Zorana
AU  - Švorc, Lubomir
AU  - Stanković, Vesna
AU  - Janković, Drina
AU  - Mirković, Marija D.
AU  - Vranješ-Đurić, Sanja
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9543
AB  - This work presents advanced electrochemical platform based on screen printed diamond electrode (SPDE) system for the single drop “point-of-care” testing. Proposed approach was applied for the quantification of doxorubicin hydrochloride (DOX) in biological fluids and pharmaceutical product. Using a single drop (~30 μL) of the tested solution at the electrode surface, DOX showed high electroactivity over a wide range of pHs. In these conditions, single oval shaped, well-defined and pH dependent oxidation peak was observed in the potential range from 0.5 V to 1.3 V. In the reverse scan, two cathodic peaks, were noted – around 0.3 V and – 0.5 V. Similarly, first reduction peak was pH dependent, while second one was independent in the studied range. Experimental conditions for DOX quantification were optimized and natures of the electrode reactions were investigated. Working linear range obtained for DOX detection was from 0.1 to 2.5 μM. Diffusion controlled electrode reaction reveal long life time of the proposed electrode as well high potential for practical application. Developed procedure was successfully applied for the DOX analysis in biological fluids – urine and pharmaceutical formulation. Obtained results clearly indicated that given procedure can be easily implemented for pharmaceutical control and medical analysis, in both, laboratory and field conditions. © 2021 Elsevier B.V.
T2  - Diamond and Related Materials
T1  - Screen printed diamond electrode as efficient “point-of-care” platform for submicromolar determination of cytostatic drug in biological fluids and pharmaceutical product
VL  - 113
SP  - 108277
DO  - 10.1016/j.diamond.2021.108277
ER  - 

@article{
author = "Stanković, Dalibor M. and Milanović, Zorana and Švorc, Lubomir and Stanković, Vesna and Janković, Drina and Mirković, Marija D. and Vranješ-Đurić, Sanja",
year = "2021",
abstract = "This work presents advanced electrochemical platform based on screen printed diamond electrode (SPDE) system for the single drop “point-of-care” testing. Proposed approach was applied for the quantification of doxorubicin hydrochloride (DOX) in biological fluids and pharmaceutical product. Using a single drop (~30 μL) of the tested solution at the electrode surface, DOX showed high electroactivity over a wide range of pHs. In these conditions, single oval shaped, well-defined and pH dependent oxidation peak was observed in the potential range from 0.5 V to 1.3 V. In the reverse scan, two cathodic peaks, were noted – around 0.3 V and – 0.5 V. Similarly, first reduction peak was pH dependent, while second one was independent in the studied range. Experimental conditions for DOX quantification were optimized and natures of the electrode reactions were investigated. Working linear range obtained for DOX detection was from 0.1 to 2.5 μM. Diffusion controlled electrode reaction reveal long life time of the proposed electrode as well high potential for practical application. Developed procedure was successfully applied for the DOX analysis in biological fluids – urine and pharmaceutical formulation. Obtained results clearly indicated that given procedure can be easily implemented for pharmaceutical control and medical analysis, in both, laboratory and field conditions. © 2021 Elsevier B.V.",
journal = "Diamond and Related Materials",
title = "Screen printed diamond electrode as efficient “point-of-care” platform for submicromolar determination of cytostatic drug in biological fluids and pharmaceutical product",
volume = "113",
pages = "108277",
doi = "10.1016/j.diamond.2021.108277"
}

Stanković, D. M., Milanović, Z., Švorc, L., Stanković, V., Janković, D., Mirković, M. D.,& Vranješ-Đurić, S.. (2021). Screen printed diamond electrode as efficient “point-of-care” platform for submicromolar determination of cytostatic drug in biological fluids and pharmaceutical product. in Diamond and Related Materials, 113, 108277.
https://doi.org/10.1016/j.diamond.2021.108277

Stanković DM, Milanović Z, Švorc L, Stanković V, Janković D, Mirković MD, Vranješ-Đurić S. Screen printed diamond electrode as efficient “point-of-care” platform for submicromolar determination of cytostatic drug in biological fluids and pharmaceutical product. in Diamond and Related Materials. 2021;113:108277.
doi:10.1016/j.diamond.2021.108277 .

Stanković, Dalibor M., Milanović, Zorana, Švorc, Lubomir, Stanković, Vesna, Janković, Drina, Mirković, Marija D., Vranješ-Đurić, Sanja, "Screen printed diamond electrode as efficient “point-of-care” platform for submicromolar determination of cytostatic drug in biological fluids and pharmaceutical product" in Diamond and Related Materials, 113 (2021):108277,
https://doi.org/10.1016/j.diamond.2021.108277 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena J.
AU  - Stanković, Dalibor M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8819
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.
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 J. and Stanković, Dalibor M.",
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.",
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. J.,& Stanković, D. M.. (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, 860, 113928.
https://doi.org/10.1016/j.jelechem.2020.113928

Stanković V, Đurđić S, Ognjanović M, Antić B, Kalcher K, Mutić JJ, Stanković DM. 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 J., Stanković, Dalibor M., "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  - Ognjanović, Miloš
AU  - Stanković, Vesna
AU  - Knežević, Sara
AU  - Antić, Bratislav
AU  - Vranješ-Đurić, Sanja
AU  - Stanković, Dalibor M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9040
AB  - Herein, we proposed a novel approach and state-of-the-art technology for the improvement of the materials and enzyme immobilization at the electrode surface and construction of impedimetric glucose biosensor. We silanized titanium dioxide nanoparticles using (3-aminopropyl)triethoxysilane (APTES), for the preparation of cross-linked material nanoparticles, with carboxylic graphene. The silanization of titanium dioxide nanoparticles and an increase in electron shuttle was proven feasible when this composite was able to achieve about 30% higher current than non-silanized material. The proposed approach was used for the modification of the printed three-electrode system and the development of the impedimetric glucose biosensor. The material morphology and electrochemical characteristics were confirmed by spectroscopic and electrochemical methods. The present combination effectively modified the electrode surface and serve as a promising basis for the construction of Point-of-Care devices. Developed biosensor possesses wide operating linear range toward glucose detection from 50 µmol to 1000 µmol, with the limit of detection of 24 µmol. Finally, negligible interference effect and application in the real sample indicate that the proposed mechanism can be successfully applied to the assessment of glucose level in only one drop of real sample.
T2  - Microchemical Journal
T1  - TiO2/APTES cross-linked to carboxylic graphene based impedimetric glucose biosensor
VL  - 158
SP  - 105150
DO  - 10.1016/j.microc.2020.105150
ER  - 

@article{
author = "Ognjanović, Miloš and Stanković, Vesna and Knežević, Sara and Antić, Bratislav and Vranješ-Đurić, Sanja and Stanković, Dalibor M.",
year = "2020",
abstract = "Herein, we proposed a novel approach and state-of-the-art technology for the improvement of the materials and enzyme immobilization at the electrode surface and construction of impedimetric glucose biosensor. We silanized titanium dioxide nanoparticles using (3-aminopropyl)triethoxysilane (APTES), for the preparation of cross-linked material nanoparticles, with carboxylic graphene. The silanization of titanium dioxide nanoparticles and an increase in electron shuttle was proven feasible when this composite was able to achieve about 30% higher current than non-silanized material. The proposed approach was used for the modification of the printed three-electrode system and the development of the impedimetric glucose biosensor. The material morphology and electrochemical characteristics were confirmed by spectroscopic and electrochemical methods. The present combination effectively modified the electrode surface and serve as a promising basis for the construction of Point-of-Care devices. Developed biosensor possesses wide operating linear range toward glucose detection from 50 µmol to 1000 µmol, with the limit of detection of 24 µmol. Finally, negligible interference effect and application in the real sample indicate that the proposed mechanism can be successfully applied to the assessment of glucose level in only one drop of real sample.",
journal = "Microchemical Journal",
title = "TiO2/APTES cross-linked to carboxylic graphene based impedimetric glucose biosensor",
volume = "158",
pages = "105150",
doi = "10.1016/j.microc.2020.105150"
}

Ognjanović, M., Stanković, V., Knežević, S., Antić, B., Vranješ-Đurić, S.,& Stanković, D. M.. (2020). TiO2/APTES cross-linked to carboxylic graphene based impedimetric glucose biosensor. in Microchemical Journal, 158, 105150.
https://doi.org/10.1016/j.microc.2020.105150

Ognjanović M, Stanković V, Knežević S, Antić B, Vranješ-Đurić S, Stanković DM. TiO2/APTES cross-linked to carboxylic graphene based impedimetric glucose biosensor. in Microchemical Journal. 2020;158:105150.
doi:10.1016/j.microc.2020.105150 .

Ognjanović, Miloš, Stanković, Vesna, Knežević, Sara, Antić, Bratislav, Vranješ-Đurić, Sanja, Stanković, Dalibor M., "TiO2/APTES cross-linked to carboxylic graphene based impedimetric glucose biosensor" in Microchemical Journal, 158 (2020):105150,
https://doi.org/10.1016/j.microc.2020.105150 . .

TY  - JOUR
AU  - Stanojković, Tatjana P.
AU  - Matić, Ivana Z.
AU  - Petrović, Nina
AU  - Stanković, Vesna
AU  - Kopčalić, Katarina
AU  - Besu, Irina
AU  - Đorđić Crnogorac, Marija
AU  - Mališić, Emina
AU  - Mirjačić-Martinović, Katarina
AU  - Vuletić, Ana
AU  - Bukumirić, Zoran
AU  - Žižak, Željko
AU  - Veldwijk, Marlon
AU  - Herskind, Carsten
AU  - Nikitović, Marina
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9713
AB  - One of the challenges of radiation oncology in the era of personalized medicine is identification of biomarkers associated with individual radiosensitivity. The aim of research was to evaluate the possible clinical value of the associations between clinical, physical, and biological factors, and risk for development of acute radiotoxicity in patients with prostate cancer. The study involved forty four patients treated with three-dimensional conformal radiotherapy. The concentrations of IL-1β, IL-2, IL-6, IFN-γ and TGF-β1 were assessed before radiotherapy, after 5th, 15th and 25th radiotherapy fractions, at the end, and 1 month after the end of radiotherapy. Cytokine gene expression was determined in peripheral blood mononuclear cells. The univariate analysis of circulating cytokine levels during radiotherapy showed that increased serum concentrations of IL-6 were significantly associated with higher grade of acute genitourinary toxicity. The multivariate analysis demonstrated that increased level of IL-6 during the radiotherapy was significantly associated with higher grade of acute genitourinary toxicity across treatment. TGF-β expression levels significantly decreased during course of radiotherapy. Research indicates that changes in circulating cytokine levels might be important parameter of radiotoxicity in patients with prostate cancer. These findings suggest that future studies based on multi-parameter examination are necessary for prediction of individual radiosensitivity.
T2  - Scientific Reports
T1  - Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients
VL  - 10
IS  - 1
SP  - 19002
DO  - 10.1038/s41598-020-75812-0
ER  - 

@article{
author = "Stanojković, Tatjana P. and Matić, Ivana Z. and Petrović, Nina and Stanković, Vesna and Kopčalić, Katarina and Besu, Irina and Đorđić Crnogorac, Marija and Mališić, Emina and Mirjačić-Martinović, Katarina and Vuletić, Ana and Bukumirić, Zoran and Žižak, Željko and Veldwijk, Marlon and Herskind, Carsten and Nikitović, Marina",
year = "2020",
abstract = "One of the challenges of radiation oncology in the era of personalized medicine is identification of biomarkers associated with individual radiosensitivity. The aim of research was to evaluate the possible clinical value of the associations between clinical, physical, and biological factors, and risk for development of acute radiotoxicity in patients with prostate cancer. The study involved forty four patients treated with three-dimensional conformal radiotherapy. The concentrations of IL-1β, IL-2, IL-6, IFN-γ and TGF-β1 were assessed before radiotherapy, after 5th, 15th and 25th radiotherapy fractions, at the end, and 1 month after the end of radiotherapy. Cytokine gene expression was determined in peripheral blood mononuclear cells. The univariate analysis of circulating cytokine levels during radiotherapy showed that increased serum concentrations of IL-6 were significantly associated with higher grade of acute genitourinary toxicity. The multivariate analysis demonstrated that increased level of IL-6 during the radiotherapy was significantly associated with higher grade of acute genitourinary toxicity across treatment. TGF-β expression levels significantly decreased during course of radiotherapy. Research indicates that changes in circulating cytokine levels might be important parameter of radiotoxicity in patients with prostate cancer. These findings suggest that future studies based on multi-parameter examination are necessary for prediction of individual radiosensitivity.",
journal = "Scientific Reports",
title = "Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients",
volume = "10",
number = "1",
pages = "19002",
doi = "10.1038/s41598-020-75812-0"
}

Stanojković, T. P., Matić, I. Z., Petrović, N., Stanković, V., Kopčalić, K., Besu, I., Đorđić Crnogorac, M., Mališić, E., Mirjačić-Martinović, K., Vuletić, A., Bukumirić, Z., Žižak, Ž., Veldwijk, M., Herskind, C.,& Nikitović, M.. (2020). Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients. in Scientific Reports, 10(1), 19002.
https://doi.org/10.1038/s41598-020-75812-0

Stanojković TP, Matić IZ, Petrović N, Stanković V, Kopčalić K, Besu I, Đorđić Crnogorac M, Mališić E, Mirjačić-Martinović K, Vuletić A, Bukumirić Z, Žižak Ž, Veldwijk M, Herskind C, Nikitović M. Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients. in Scientific Reports. 2020;10(1):19002.
doi:10.1038/s41598-020-75812-0 .

Stanojković, Tatjana P., Matić, Ivana Z., Petrović, Nina, Stanković, Vesna, Kopčalić, Katarina, Besu, Irina, Đorđić Crnogorac, Marija, Mališić, Emina, Mirjačić-Martinović, Katarina, Vuletić, Ana, Bukumirić, Zoran, Žižak, Željko, Veldwijk, Marlon, Herskind, Carsten, Nikitović, Marina, "Evaluation of cytokine expression and circulating immune cell subsets as potential parameters of acute radiation toxicity in prostate cancer patients" in Scientific Reports, 10, no. 1 (2020):19002,
https://doi.org/10.1038/s41598-020-75812-0 . .

TY  - JOUR
AU  - Petković, Branka B.
AU  - Ognjanović, Miloš
AU  - Krstić, Milena P.
AU  - Stanković, Vesna
AU  - Babincev, Ljiljana
AU  - Pergal, Marija V.
AU  - Stanković, Dalibor M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8846
AB  - Mefenamic acid and indomethacin, medicaments belonging to the group of non-steroidal anti-inflammatory agents, were determined separately and simultaneously at anodically prepared BDDE. Differential pulse voltammetry was used to establish simple and fast analytical procedure based on electrooxidation of mefenamic acid at 0.6 V and indomethacin at 1.0 V (and 1.1 V). At optimal conditions, it was suitable for highly sensitive and selective determination of these compounds with LODs comparable to previously reported modified electrodes. Additionally, considering the importance of these compounds, we proposed precise and accurate quantification of these species based on green and simple pre-treatable electrochemical sensor. The effect of interfering agents (tablet ingredients and vitamins) was appeared to be negligibly confirming a favourable selectivity of the method. The proposed method was analytically applied by simultaneously determining mefenamic acid and indomethacin in pharmaceutical formulations. © 2020 Elsevier B.V.
T2  - Diamond and Related Materials
T1  - Boron-doped diamond electrode as efficient sensing platform for simultaneous quantification of mefenamic acid and indomethacin
VL  - 105
SP  - 107785
DO  - 10.1016/j.diamond.2020.107785
ER  - 

@article{
author = "Petković, Branka B. and Ognjanović, Miloš and Krstić, Milena P. and Stanković, Vesna and Babincev, Ljiljana and Pergal, Marija V. and Stanković, Dalibor M.",
year = "2020",
abstract = "Mefenamic acid and indomethacin, medicaments belonging to the group of non-steroidal anti-inflammatory agents, were determined separately and simultaneously at anodically prepared BDDE. Differential pulse voltammetry was used to establish simple and fast analytical procedure based on electrooxidation of mefenamic acid at 0.6 V and indomethacin at 1.0 V (and 1.1 V). At optimal conditions, it was suitable for highly sensitive and selective determination of these compounds with LODs comparable to previously reported modified electrodes. Additionally, considering the importance of these compounds, we proposed precise and accurate quantification of these species based on green and simple pre-treatable electrochemical sensor. The effect of interfering agents (tablet ingredients and vitamins) was appeared to be negligibly confirming a favourable selectivity of the method. The proposed method was analytically applied by simultaneously determining mefenamic acid and indomethacin in pharmaceutical formulations. © 2020 Elsevier B.V.",
journal = "Diamond and Related Materials",
title = "Boron-doped diamond electrode as efficient sensing platform for simultaneous quantification of mefenamic acid and indomethacin",
volume = "105",
pages = "107785",
doi = "10.1016/j.diamond.2020.107785"
}

Petković, B. B., Ognjanović, M., Krstić, M. P., Stanković, V., Babincev, L., Pergal, M. V.,& Stanković, D. M.. (2020). Boron-doped diamond electrode as efficient sensing platform for simultaneous quantification of mefenamic acid and indomethacin. in Diamond and Related Materials, 105, 107785.
https://doi.org/10.1016/j.diamond.2020.107785

Petković BB, Ognjanović M, Krstić MP, Stanković V, Babincev L, Pergal MV, Stanković DM. Boron-doped diamond electrode as efficient sensing platform for simultaneous quantification of mefenamic acid and indomethacin. in Diamond and Related Materials. 2020;105:107785.
doi:10.1016/j.diamond.2020.107785 .

Petković, Branka B., Ognjanović, Miloš, Krstić, Milena P., Stanković, Vesna, Babincev, Ljiljana, Pergal, Marija V., Stanković, Dalibor M., "Boron-doped diamond electrode as efficient sensing platform for simultaneous quantification of mefenamic acid and indomethacin" in Diamond and Related Materials, 105 (2020):107785,
https://doi.org/10.1016/j.diamond.2020.107785 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Mutić, Jelena
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9111
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 of H2O2 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.
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 Z. and Ognjanović, Miloš and Mutić, Jelena and Kalcher, Kurt and Stanković, Dalibor M.",
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 of H2O2 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.",
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. Z., Ognjanović, M., Mutić, J., Kalcher, K.,& Stanković, D. M.. (2020). A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry, 876, 114487.
https://doi.org/10.1016/j.jelechem.2020.114487

Stanković V, Đurđić SZ, Ognjanović M, Mutić J, Kalcher K, Stanković DM. 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 Z., Ognjanović, Miloš, Mutić, Jelena, Kalcher, Kurt, Stanković, Dalibor M., "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  - Kopčalić, Katarina
AU  - Petrović, Nina
AU  - Stanojković, Tatjana P.
AU  - Stanković, Vesna
AU  - Bukumirić, Zoran
AU  - Roganović, Jelena
AU  - Mališić, Emina
AU  - Nikitović, Marina
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8444
AB  - Introduction: Nearly sixty percent of patients with prostate cancer (PCa) undergo radiation therapy (RT). During the course of treatment patients may experience normal tissue reactions. It is a well established fact that genetic and epigenetic mechanisms, such as microRNA (miRNA) level changes might be associated with radiotoxicity, as a response to irradiation. Materials and methods: This is the first study that has investigated levels of radiosensory miRNAs in association with acute genitourinary radiotoxicity extracted from peripheral blood mononuclear cells (PBCs), in three points; before RT (BRT), after RT (ART) and on the first control examination (FCONT). We measured levels of miR-21/146a/155 expression by quantitative real-time PCR (qRT-PCR), comparative ΔΔCt method, in fifteen patients with localized prostate cancer, treated with three-dimensional conformal radiotherapy (3DCRT). Nine subjects have experienced acute genitourinary (GU) radiotoxicity whereas six where without GU radiotoxicity. Results: Firstly, we detected the highest levels of miR-21 in ART group (p = 0.043) in the patients with acute GU radiotoxicity. Secondly, we found trend towards higher miR-21 levels and significantly higher levels of miR-146a/155 within the patients with acute GU toxicity than in patients without (p = 0.068, p = 0.016, and p = 0.010, respectively). Thirdly, we detected significant change in miR-146a/155 levels within the patients without acute GU radiotoxicity during RT p = 0.042, and p = 0.041, respectively). Conclusion: miR-21/146a/155 might be useful potential factors of radiosensitivity and acute genitourinary radiotoxicity in prostate cancer patients. miRNA might have great potential as predictors of various pathological conditions extracted from PBMCs. © 2018 Elsevier GmbH
T2  - Pathology - Research and Practice
T1  - Association between miR-21/146a/155 level changes and acute genitourinary radiotoxicity in prostate cancer patients: A pilot study
VL  - 215
IS  - 4
SP  - 626
EP  - 631
DO  - 10.1016/j.prp.2018.12.007
ER  - 

@article{
author = "Kopčalić, Katarina and Petrović, Nina and Stanojković, Tatjana P. and Stanković, Vesna and Bukumirić, Zoran and Roganović, Jelena and Mališić, Emina and Nikitović, Marina",
year = "2019",
abstract = "Introduction: Nearly sixty percent of patients with prostate cancer (PCa) undergo radiation therapy (RT). During the course of treatment patients may experience normal tissue reactions. It is a well established fact that genetic and epigenetic mechanisms, such as microRNA (miRNA) level changes might be associated with radiotoxicity, as a response to irradiation. Materials and methods: This is the first study that has investigated levels of radiosensory miRNAs in association with acute genitourinary radiotoxicity extracted from peripheral blood mononuclear cells (PBCs), in three points; before RT (BRT), after RT (ART) and on the first control examination (FCONT). We measured levels of miR-21/146a/155 expression by quantitative real-time PCR (qRT-PCR), comparative ΔΔCt method, in fifteen patients with localized prostate cancer, treated with three-dimensional conformal radiotherapy (3DCRT). Nine subjects have experienced acute genitourinary (GU) radiotoxicity whereas six where without GU radiotoxicity. Results: Firstly, we detected the highest levels of miR-21 in ART group (p = 0.043) in the patients with acute GU radiotoxicity. Secondly, we found trend towards higher miR-21 levels and significantly higher levels of miR-146a/155 within the patients with acute GU toxicity than in patients without (p = 0.068, p = 0.016, and p = 0.010, respectively). Thirdly, we detected significant change in miR-146a/155 levels within the patients without acute GU radiotoxicity during RT p = 0.042, and p = 0.041, respectively). Conclusion: miR-21/146a/155 might be useful potential factors of radiosensitivity and acute genitourinary radiotoxicity in prostate cancer patients. miRNA might have great potential as predictors of various pathological conditions extracted from PBMCs. © 2018 Elsevier GmbH",
journal = "Pathology - Research and Practice",
title = "Association between miR-21/146a/155 level changes and acute genitourinary radiotoxicity in prostate cancer patients: A pilot study",
volume = "215",
number = "4",
pages = "626-631",
doi = "10.1016/j.prp.2018.12.007"
}

Kopčalić, K., Petrović, N., Stanojković, T. P., Stanković, V., Bukumirić, Z., Roganović, J., Mališić, E.,& Nikitović, M.. (2019). Association between miR-21/146a/155 level changes and acute genitourinary radiotoxicity in prostate cancer patients: A pilot study. in Pathology - Research and Practice, 215(4), 626-631.
https://doi.org/10.1016/j.prp.2018.12.007

Kopčalić K, Petrović N, Stanojković TP, Stanković V, Bukumirić Z, Roganović J, Mališić E, Nikitović M. Association between miR-21/146a/155 level changes and acute genitourinary radiotoxicity in prostate cancer patients: A pilot study. in Pathology - Research and Practice. 2019;215(4):626-631.
doi:10.1016/j.prp.2018.12.007 .

Kopčalić, Katarina, Petrović, Nina, Stanojković, Tatjana P., Stanković, Vesna, Bukumirić, Zoran, Roganović, Jelena, Mališić, Emina, Nikitović, Marina, "Association between miR-21/146a/155 level changes and acute genitourinary radiotoxicity in prostate cancer patients: A pilot study" in Pathology - Research and Practice, 215, no. 4 (2019):626-631,
https://doi.org/10.1016/j.prp.2018.12.007 . .

TY  - JOUR
AU  - Đurđić, Slađana
AU  - Stanković, Vesna
AU  - Perić, Marko R.
AU  - Ognjanović, Miloš
AU  - Švorc, Lubomir
AU  - Mutić, Jelena J.
AU  - Stanković, Dalibor M.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8615
AB  - In present work boron doped diamond (BDD) electrode was applied for studying electrochemical behavior, as well as for quantitative determination of natural alkaloid, tubocurarine (arrow poison/ TUB). Electrochemical behavior was investigated using several organic solvents and aqueous buffers, at different pHs, as supporting electrolytes. After selection of the most appropriate supporting electrolyte and investigation of its electrochemical behavior, analytical procedures for quantitative analysis of TUB were developed in an acetonitrile/methanol (80:20) mixture and in 1 mol L−1 nitric acid, which had linear quantification ranges from 4 × 10−6 to 1 × 10−4 mol L−1 (LOD = 3.07 × 10−6 mol L−1) and 4 × 10−6 to 9 × 10−5 mol L−1 (LOD = 2.45 × 10−6 mol L−1 and 5.28 × 10−7 mol L−1, depending on the selected peak), respectively. The oxidation mechanism of TUB was proposed from the theoretical aspect. Remarkable selectivity and good sensitivity were obtained after the TUB quantification method was optimized, allowing application of the developed method for TUB quantification in biological fluids, with excellent reproducibility, accuracy and precision.
T2  - Journal of The Electrochemical Society
T1  - Electrochemistry of the Arrow Poison, Tubocurarine, Using Boron Doped Diamond Electrode: Experimental and Theoretical Approaches
VL  - 166
IS  - 14
SP  - G157
EP  - G161
DO  - 10.1149/2.1241914jes
ER  - 

@article{
author = "Đurđić, Slađana and Stanković, Vesna and Perić, Marko R. and Ognjanović, Miloš and Švorc, Lubomir and Mutić, Jelena J. and Stanković, Dalibor M.",
year = "2019",
abstract = "In present work boron doped diamond (BDD) electrode was applied for studying electrochemical behavior, as well as for quantitative determination of natural alkaloid, tubocurarine (arrow poison/ TUB). Electrochemical behavior was investigated using several organic solvents and aqueous buffers, at different pHs, as supporting electrolytes. After selection of the most appropriate supporting electrolyte and investigation of its electrochemical behavior, analytical procedures for quantitative analysis of TUB were developed in an acetonitrile/methanol (80:20) mixture and in 1 mol L−1 nitric acid, which had linear quantification ranges from 4 × 10−6 to 1 × 10−4 mol L−1 (LOD = 3.07 × 10−6 mol L−1) and 4 × 10−6 to 9 × 10−5 mol L−1 (LOD = 2.45 × 10−6 mol L−1 and 5.28 × 10−7 mol L−1, depending on the selected peak), respectively. The oxidation mechanism of TUB was proposed from the theoretical aspect. Remarkable selectivity and good sensitivity were obtained after the TUB quantification method was optimized, allowing application of the developed method for TUB quantification in biological fluids, with excellent reproducibility, accuracy and precision.",
journal = "Journal of The Electrochemical Society",
title = "Electrochemistry of the Arrow Poison, Tubocurarine, Using Boron Doped Diamond Electrode: Experimental and Theoretical Approaches",
volume = "166",
number = "14",
pages = "G157-G161",
doi = "10.1149/2.1241914jes"
}

Đurđić, S., Stanković, V., Perić, M. R., Ognjanović, M., Švorc, L., Mutić, J. J.,& Stanković, D. M.. (2019). Electrochemistry of the Arrow Poison, Tubocurarine, Using Boron Doped Diamond Electrode: Experimental and Theoretical Approaches. in Journal of The Electrochemical Society, 166(14), G157-G161.
https://doi.org/10.1149/2.1241914jes

Đurđić S, Stanković V, Perić MR, Ognjanović M, Švorc L, Mutić JJ, Stanković DM. Electrochemistry of the Arrow Poison, Tubocurarine, Using Boron Doped Diamond Electrode: Experimental and Theoretical Approaches. in Journal of The Electrochemical Society. 2019;166(14):G157-G161.
doi:10.1149/2.1241914jes .

Đurđić, Slađana, Stanković, Vesna, Perić, Marko R., Ognjanović, Miloš, Švorc, Lubomir, Mutić, Jelena J., Stanković, Dalibor M., "Electrochemistry of the Arrow Poison, Tubocurarine, Using Boron Doped Diamond Electrode: Experimental and Theoretical Approaches" in Journal of The Electrochemical Society, 166, no. 14 (2019):G157-G161,
https://doi.org/10.1149/2.1241914jes . .