TY  - JOUR
AU  - Ðurđić, Slađana
AU  - Stanković, V.
AU  - Perić, M.
AU  - Ognjanović, Miloš
AU  - Šovrc, Ľubomír
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3716
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.
PB  - Electrochemical Society Inc.
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 = "Ðurđić, Slađana and Stanković, V. and Perić, M. and Ognjanović, Miloš and Šovrc, Ľubomír and Mutić, Jelena and Stanković, Dalibor",
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.",
publisher = "Electrochemical Society Inc.",
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"
}

Ðurđić, S., Stanković, V., Perić, M., Ognjanović, M., Šovrc, Ľ., Mutić, J.,& Stanković, D.. (2019). Electrochemistry of the arrow poison, tubocurarine, using boron doped diamond electrode: Experimental and theoretical approaches. in Journal of the Electrochemical Society
Electrochemical Society Inc.., 166(14), G157-G161.
https://doi.org/10.1149/2.1241914jes

Ðurđić S, Stanković V, Perić M, Ognjanović M, Šovrc Ľ, Mutić J, Stanković D. 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 .

Ðurđić, Slađana, Stanković, V., Perić, M., Ognjanović, Miloš, Šovrc, Ľubomír, Mutić, Jelena, Stanković, Dalibor, "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 . .

TY  - JOUR
AU  - Sarakhman, Olha
AU  - Pysarevska, Solomiya
AU  - Dubenska, Liliya
AU  - Stanković, Dalibor
AU  - Otrisal, Pavel
AU  - Planková, Alexandra
AU  - Kianicková, Kristína
AU  - Šovrc, Ľubomír
PY  - 2019
AB  - In present paper, a miniaturized boron-doped diamond electrode (BDDE) was for the first time used as a reliable electrochemical sensor within the novel voltammetric protocol for the rapid and simple determination of dipyridamole (DIP). Cyclic voltammetric studies uncovered that the electrochemical oxidation of DIP was shown to be irreversible and diffusion-controlled process with single and well-developed signal at a potential of +0.45 V in Britton-Robinson buffer at pH 3.0. Using the suitable experimental conditions, the linearity for DIP determination was observed in the concentration ranges of 0.1.5.0 μM and 0.1.6.0 μM with the corresponding limits of detection of 40 nM and 60 nM as well as the intra-day repeatability with relative standard deviation below 5% for differential pulse and square-wave voltammetry, respectively. This protocol was successfully applied to the determination of DIP in pharmaceutical tablets with result in good compliance with that declared by the producer. Biological pertinence of the developed procedure was presented by analysis of model human urine samples with adequate recoveries. The proposed protocol with a miniaturized BDDE could represent an effective and alternative analytical implement for DIP determination instead of commonly used toxic mercury and chemically-modified electrodes in previously published methods.
PB  - Electrochemical Society Inc.
T2  - Journal of the Electrochemical Society
T1  - Voltammetric protocol for reliable determination of a platelet aggregation inhibitor dipyridamole on a bare miniaturized boron-doped diamond electrochemical sensor
VL  - 166
IS  - 4
SP  - B219
EP  - B226
DO  - 10.1149/2.0381904jes
ER  - 

@article{
author = "Sarakhman, Olha and Pysarevska, Solomiya and Dubenska, Liliya and Stanković, Dalibor and Otrisal, Pavel and Planková, Alexandra and Kianicková, Kristína and Šovrc, Ľubomír",
year = "2019",
abstract = "In present paper, a miniaturized boron-doped diamond electrode (BDDE) was for the first time used as a reliable electrochemical sensor within the novel voltammetric protocol for the rapid and simple determination of dipyridamole (DIP). Cyclic voltammetric studies uncovered that the electrochemical oxidation of DIP was shown to be irreversible and diffusion-controlled process with single and well-developed signal at a potential of +0.45 V in Britton-Robinson buffer at pH 3.0. Using the suitable experimental conditions, the linearity for DIP determination was observed in the concentration ranges of 0.1.5.0 μM and 0.1.6.0 μM with the corresponding limits of detection of 40 nM and 60 nM as well as the intra-day repeatability with relative standard deviation below 5% for differential pulse and square-wave voltammetry, respectively. This protocol was successfully applied to the determination of DIP in pharmaceutical tablets with result in good compliance with that declared by the producer. Biological pertinence of the developed procedure was presented by analysis of model human urine samples with adequate recoveries. The proposed protocol with a miniaturized BDDE could represent an effective and alternative analytical implement for DIP determination instead of commonly used toxic mercury and chemically-modified electrodes in previously published methods.",
publisher = "Electrochemical Society Inc.",
journal = "Journal of the Electrochemical Society",
title = "Voltammetric protocol for reliable determination of a platelet aggregation inhibitor dipyridamole on a bare miniaturized boron-doped diamond electrochemical sensor",
volume = "166",
number = "4",
pages = "B219-B226",
doi = "10.1149/2.0381904jes"
}

Sarakhman, O., Pysarevska, S., Dubenska, L., Stanković, D., Otrisal, P., Planková, A., Kianicková, K.,& Šovrc, Ľ.. (2019). Voltammetric protocol for reliable determination of a platelet aggregation inhibitor dipyridamole on a bare miniaturized boron-doped diamond electrochemical sensor. in Journal of the Electrochemical Society
Electrochemical Society Inc.., 166(4), B219-B226.
https://doi.org/10.1149/2.0381904jes

Sarakhman O, Pysarevska S, Dubenska L, Stanković D, Otrisal P, Planková A, Kianicková K, Šovrc Ľ. Voltammetric protocol for reliable determination of a platelet aggregation inhibitor dipyridamole on a bare miniaturized boron-doped diamond electrochemical sensor. in Journal of the Electrochemical Society. 2019;166(4):B219-B226.
doi:10.1149/2.0381904jes .

Sarakhman, Olha, Pysarevska, Solomiya, Dubenska, Liliya, Stanković, Dalibor, Otrisal, Pavel, Planková, Alexandra, Kianicková, Kristína, Šovrc, Ľubomír, "Voltammetric protocol for reliable determination of a platelet aggregation inhibitor dipyridamole on a bare miniaturized boron-doped diamond electrochemical sensor" in Journal of the Electrochemical Society, 166, no. 4 (2019):B219-B226,
https://doi.org/10.1149/2.0381904jes . .

TY  - JOUR
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Šovrc, Ľubomír
AU  - Ćirković-Veličković, Tanja
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2184
AB  - Ergosterol (Erg) is the major sterol component in the plasma membranes of fungi. The main goal of this work was to develop rapid, reliable, and cost-effective method toward Erg detection based on application of unmodified boron-doped diamond electrode. Several organic solvents were tested (acetonitrile, dimethyformamide, dimethylsulfoxide, dichloromethane), and it was found that best analytical characteristics were achieved using acetonitrile containing 0.1 M tetrabutylammonium hexa-fluorophosphate as supporting electrolyte. Oval shaped and well-defined oxidation peak was recorded at potential of around 1.17 V versus Ag/Ag+ non-aqueous reference electrode. Under optimized experimental conditions, linear working range from 2 to 200 mu M was estimated, with limit of detection of 0.7 mu M, using square wave voltammetry. Negligible effect of possible interfering compound was observed. Proposed methodology was successfully applied for estimation of Erg content in mushrooms extract with satisfactory results in comparison with spectrophotometric procedure. Obtained results clearly show that developed analytical methodology can be adequate replacement for the, up to date, used methods and open-novel approach for ergosterol detection.
PB  - Springer, New York
T2  - Food Analytical Methods
T1  - Analytical Approach for Detection of Ergosterol in Mushrooms Based on Modification Free Electrochemical Sensor in Organic Solvents
VL  - 11
IS  - 9
SP  - 2590
EP  - 2596
DO  - 10.1007/s12161-018-1249-3
ER  - 

@article{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Šovrc, Ľubomír and Ćirković-Veličković, Tanja and Mutić, Jelena and Stanković, Dalibor",
year = "2018",
abstract = "Ergosterol (Erg) is the major sterol component in the plasma membranes of fungi. The main goal of this work was to develop rapid, reliable, and cost-effective method toward Erg detection based on application of unmodified boron-doped diamond electrode. Several organic solvents were tested (acetonitrile, dimethyformamide, dimethylsulfoxide, dichloromethane), and it was found that best analytical characteristics were achieved using acetonitrile containing 0.1 M tetrabutylammonium hexa-fluorophosphate as supporting electrolyte. Oval shaped and well-defined oxidation peak was recorded at potential of around 1.17 V versus Ag/Ag+ non-aqueous reference electrode. Under optimized experimental conditions, linear working range from 2 to 200 mu M was estimated, with limit of detection of 0.7 mu M, using square wave voltammetry. Negligible effect of possible interfering compound was observed. Proposed methodology was successfully applied for estimation of Erg content in mushrooms extract with satisfactory results in comparison with spectrophotometric procedure. Obtained results clearly show that developed analytical methodology can be adequate replacement for the, up to date, used methods and open-novel approach for ergosterol detection.",
publisher = "Springer, New York",
journal = "Food Analytical Methods",
title = "Analytical Approach for Detection of Ergosterol in Mushrooms Based on Modification Free Electrochemical Sensor in Organic Solvents",
volume = "11",
number = "9",
pages = "2590-2596",
doi = "10.1007/s12161-018-1249-3"
}

Vukojević, V., Đurđić, S. Z., Šovrc, Ľ., Ćirković-Veličković, T., Mutić, J.,& Stanković, D.. (2018). Analytical Approach for Detection of Ergosterol in Mushrooms Based on Modification Free Electrochemical Sensor in Organic Solvents. in Food Analytical Methods
Springer, New York., 11(9), 2590-2596.
https://doi.org/10.1007/s12161-018-1249-3

Vukojević V, Đurđić SZ, Šovrc Ľ, Ćirković-Veličković T, Mutić J, Stanković D. Analytical Approach for Detection of Ergosterol in Mushrooms Based on Modification Free Electrochemical Sensor in Organic Solvents. in Food Analytical Methods. 2018;11(9):2590-2596.
doi:10.1007/s12161-018-1249-3 .

Vukojević, Vesna, Đurđić, Slađana Z., Šovrc, Ľubomír, Ćirković-Veličković, Tanja, Mutić, Jelena, Stanković, Dalibor, "Analytical Approach for Detection of Ergosterol in Mushrooms Based on Modification Free Electrochemical Sensor in Organic Solvents" in Food Analytical Methods, 11, no. 9 (2018):2590-2596,
https://doi.org/10.1007/s12161-018-1249-3 . .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Strežova, Ivana
AU  - Kianicková, Kristína
AU  - Stanković, Dalibor
AU  - Otrisal, Pavel
AU  - Samphao, Anchalee
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2180
AB  - Herein, an advanced electroanalytical approach for the determination of ibuprofen based on the use of a bare and electrochemically untreated boron-doped diamond electrode is presented. Cyclic voltammetric study revealed that the electrode reaction of the analyte was manifested by the presence of well-shaped irreversible and diffusion-driven oxidation peak at very high potential (+1.75 V vs. Ag/AgCl/3 mol L-1 KCl reference electrode) in 1 mol L-1 perchloric acid. After optimization of experimental conditions, the peak current of ibuprofen was proportionally linear from 9.49 x 10(-7) to 6.69 x 10(-5) mol L-1 providing both differential pulse (DPV) and square-wave voltammetric (SWV) techniques, respectively. The elaborated electroanalytical protocol rendered low detection limits of 4.1 x 10(-7) and 9.3 x 10(-7 )mol L-1 in association with favourable intra day repeatability (relative standard deviation of 3.6 and 4.6%) using DPV and SWV procedures, respectively. The effect of interfering compounds such as ascorbic acid, dopamine, caffeine, uric acid and glucose on the current response of ibuprofen was explored in details. The usefulness of the proposed approach was verified in the analysis of a variety of commercial brands of pharmaceuticals and spiked human urine samples with the significant range of recovery percentages (for pharmaceuticals 99.8-107.5% and 99.8-105.0% by DPV and SWV, for urine 95-107% and 97-103% by DPV and SWV). Taking these features into account, the developed protocol may be exploited as a novel, simple and efficient tool in drug quality control analysis and analysis of biological samples. In addition, a bare and electrochemically untreated boron-doped diamond electrode may be applied as a progressive electrochemical sensor and helpful alternative to previously utilized electrochemical platforms in this field.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode
VL  - 822
SP  - 144
EP  - 152
DO  - 10.1016/j.jelechem.2018.05.026
ER  - 

@article{
author = "Šovrc, Ľubomír and Strežova, Ivana and Kianicková, Kristína and Stanković, Dalibor and Otrisal, Pavel and Samphao, Anchalee",
year = "2018",
abstract = "Herein, an advanced electroanalytical approach for the determination of ibuprofen based on the use of a bare and electrochemically untreated boron-doped diamond electrode is presented. Cyclic voltammetric study revealed that the electrode reaction of the analyte was manifested by the presence of well-shaped irreversible and diffusion-driven oxidation peak at very high potential (+1.75 V vs. Ag/AgCl/3 mol L-1 KCl reference electrode) in 1 mol L-1 perchloric acid. After optimization of experimental conditions, the peak current of ibuprofen was proportionally linear from 9.49 x 10(-7) to 6.69 x 10(-5) mol L-1 providing both differential pulse (DPV) and square-wave voltammetric (SWV) techniques, respectively. The elaborated electroanalytical protocol rendered low detection limits of 4.1 x 10(-7) and 9.3 x 10(-7 )mol L-1 in association with favourable intra day repeatability (relative standard deviation of 3.6 and 4.6%) using DPV and SWV procedures, respectively. The effect of interfering compounds such as ascorbic acid, dopamine, caffeine, uric acid and glucose on the current response of ibuprofen was explored in details. The usefulness of the proposed approach was verified in the analysis of a variety of commercial brands of pharmaceuticals and spiked human urine samples with the significant range of recovery percentages (for pharmaceuticals 99.8-107.5% and 99.8-105.0% by DPV and SWV, for urine 95-107% and 97-103% by DPV and SWV). Taking these features into account, the developed protocol may be exploited as a novel, simple and efficient tool in drug quality control analysis and analysis of biological samples. In addition, a bare and electrochemically untreated boron-doped diamond electrode may be applied as a progressive electrochemical sensor and helpful alternative to previously utilized electrochemical platforms in this field.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode",
volume = "822",
pages = "144-152",
doi = "10.1016/j.jelechem.2018.05.026"
}

Šovrc, Ľ., Strežova, I., Kianicková, K., Stanković, D., Otrisal, P.,& Samphao, A.. (2018). An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 822, 144-152.
https://doi.org/10.1016/j.jelechem.2018.05.026

Šovrc Ľ, Strežova I, Kianicková K, Stanković D, Otrisal P, Samphao A. An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode. in Journal of Electroanalytical Chemistry. 2018;822:144-152.
doi:10.1016/j.jelechem.2018.05.026 .

Šovrc, Ľubomír, Strežova, Ivana, Kianicková, Kristína, Stanković, Dalibor, Otrisal, Pavel, Samphao, Anchalee, "An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode" in Journal of Electroanalytical Chemistry, 822 (2018):144-152,
https://doi.org/10.1016/j.jelechem.2018.05.026 . .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Strežova, Ivana
AU  - Kianicková, Kristína
AU  - Stanković, Dalibor
AU  - Otrisal, Pavel
AU  - Samphao, Anchalee
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2938
AB  - Herein, an advanced electroanalytical approach for the determination of ibuprofen based on the use of a bare and electrochemically untreated boron-doped diamond electrode is presented. Cyclic voltammetric study revealed that the electrode reaction of the analyte was manifested by the presence of well-shaped irreversible and diffusion-driven oxidation peak at very high potential (+1.75 V vs. Ag/AgCl/3 mol L-1 KCl reference electrode) in 1 mol L-1 perchloric acid. After optimization of experimental conditions, the peak current of ibuprofen was proportionally linear from 9.49 x 10(-7) to 6.69 x 10(-5) mol L-1 providing both differential pulse (DPV) and square-wave voltammetric (SWV) techniques, respectively. The elaborated electroanalytical protocol rendered low detection limits of 4.1 x 10(-7) and 9.3 x 10(-7 )mol L-1 in association with favourable intra day repeatability (relative standard deviation of 3.6 and 4.6%) using DPV and SWV procedures, respectively. The effect of interfering compounds such as ascorbic acid, dopamine, caffeine, uric acid and glucose on the current response of ibuprofen was explored in details. The usefulness of the proposed approach was verified in the analysis of a variety of commercial brands of pharmaceuticals and spiked human urine samples with the significant range of recovery percentages (for pharmaceuticals 99.8-107.5% and 99.8-105.0% by DPV and SWV, for urine 95-107% and 97-103% by DPV and SWV). Taking these features into account, the developed protocol may be exploited as a novel, simple and efficient tool in drug quality control analysis and analysis of biological samples. In addition, a bare and electrochemically untreated boron-doped diamond electrode may be applied as a progressive electrochemical sensor and helpful alternative to previously utilized electrochemical platforms in this field.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode
VL  - 822
SP  - 144
EP  - 152
DO  - 10.1016/j.jelechem.2018.05.026
ER  - 

@article{
author = "Šovrc, Ľubomír and Strežova, Ivana and Kianicková, Kristína and Stanković, Dalibor and Otrisal, Pavel and Samphao, Anchalee",
year = "2018",
abstract = "Herein, an advanced electroanalytical approach for the determination of ibuprofen based on the use of a bare and electrochemically untreated boron-doped diamond electrode is presented. Cyclic voltammetric study revealed that the electrode reaction of the analyte was manifested by the presence of well-shaped irreversible and diffusion-driven oxidation peak at very high potential (+1.75 V vs. Ag/AgCl/3 mol L-1 KCl reference electrode) in 1 mol L-1 perchloric acid. After optimization of experimental conditions, the peak current of ibuprofen was proportionally linear from 9.49 x 10(-7) to 6.69 x 10(-5) mol L-1 providing both differential pulse (DPV) and square-wave voltammetric (SWV) techniques, respectively. The elaborated electroanalytical protocol rendered low detection limits of 4.1 x 10(-7) and 9.3 x 10(-7 )mol L-1 in association with favourable intra day repeatability (relative standard deviation of 3.6 and 4.6%) using DPV and SWV procedures, respectively. The effect of interfering compounds such as ascorbic acid, dopamine, caffeine, uric acid and glucose on the current response of ibuprofen was explored in details. The usefulness of the proposed approach was verified in the analysis of a variety of commercial brands of pharmaceuticals and spiked human urine samples with the significant range of recovery percentages (for pharmaceuticals 99.8-107.5% and 99.8-105.0% by DPV and SWV, for urine 95-107% and 97-103% by DPV and SWV). Taking these features into account, the developed protocol may be exploited as a novel, simple and efficient tool in drug quality control analysis and analysis of biological samples. In addition, a bare and electrochemically untreated boron-doped diamond electrode may be applied as a progressive electrochemical sensor and helpful alternative to previously utilized electrochemical platforms in this field.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode",
volume = "822",
pages = "144-152",
doi = "10.1016/j.jelechem.2018.05.026"
}

Šovrc, Ľ., Strežova, I., Kianicková, K., Stanković, D., Otrisal, P.,& Samphao, A.. (2018). An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 822, 144-152.
https://doi.org/10.1016/j.jelechem.2018.05.026

Šovrc Ľ, Strežova I, Kianicková K, Stanković D, Otrisal P, Samphao A. An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode. in Journal of Electroanalytical Chemistry. 2018;822:144-152.
doi:10.1016/j.jelechem.2018.05.026 .

Šovrc, Ľubomír, Strežova, Ivana, Kianicková, Kristína, Stanković, Dalibor, Otrisal, Pavel, Samphao, Anchalee, "An advanced approach for electrochemical sensing of ibuprofen in pharmaceuticals and human urine samples using a bare boron-doped diamond electrode" in Journal of Electroanalytical Chemistry, 822 (2018):144-152,
https://doi.org/10.1016/j.jelechem.2018.05.026 . .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Hasso, Marek
AU  - Sarakhman, Olha
AU  - Kianicková, Kristína
AU  - Stanković, Dalibor
AU  - Otrisal, Pavel
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2208
AB  - In the present paper, a miniaturized boron-doped diamond electrode (BDDE) is proposed as a progressive electrochemical sensor for simple, fast and reliable quantification of dimethylxanthine alkaloid, theobromine (TB). Using cyclic voltammetry, the studied xanthine provided one well-shaped, irreversible and diffusion-controlled oxidation peak at relatively high potentials (+ 1.2 V vs. Ag/AgCl/3 M KCl reference electrode) in the presence of 0.1 M H2SO4. After selection of suitable experimental conditions, the linear calibration curves for TB were obtained in the concentration range from 0.99 up to 54.5 mu M with the sensitivity of 0.07 mu A/mu M providing both differential pulse (DPV) and square-wave voltammetric (SWV) techniques, respectively. The elaborated voltammetric protocol yielded low detection limits of 0.42 and 0.51 mu M accompanied by adequate intra-day repeatability (relative standard deviation of 2.5 and 1.7%) using DPV and SWV procedure, respectively. The interference study revealed the reasonable selectivity when taking the target food samples into account. The practical applicability of the voltammetric protocol using a miniaturized BDDE was verified in the analysis of six commercially available brands of chocolate products with the determined mass percentages of TB ranging from 0.75 to 2.24% and from 0.69 to 2.15% using DPV and SWV procedure, respectively. The obtained results were also in a good agreement with those achieved by reference titration method with potentiometric indication. The progressive electrochemical sensor based on a miniaturized BDDE has appeared to be an attractive candidate for practical applications in food quality control. Besides, the proposed voltammetric protocol presents advantages when compared to others techniques (e.g. chromatography), concerning simplicity, cost, speed of analysis, waste generation (environmentally friendly) and samples pretreatment (only dilution in electrolyte solution prior to analysis).
PB  - Elsevier Science Bv, Amsterdam
T2  - Microchemical Journal
T1  - A progressive electrochemical sensor for food quality control: Reliable determination of theobromine in chocolate products using a miniaturized boron-doped diamond electrode
VL  - 142
SP  - 297
EP  - 304
DO  - 10.1016/j.microc.2018.07.007
ER  - 

@article{
author = "Šovrc, Ľubomír and Hasso, Marek and Sarakhman, Olha and Kianicková, Kristína and Stanković, Dalibor and Otrisal, Pavel",
year = "2018",
abstract = "In the present paper, a miniaturized boron-doped diamond electrode (BDDE) is proposed as a progressive electrochemical sensor for simple, fast and reliable quantification of dimethylxanthine alkaloid, theobromine (TB). Using cyclic voltammetry, the studied xanthine provided one well-shaped, irreversible and diffusion-controlled oxidation peak at relatively high potentials (+ 1.2 V vs. Ag/AgCl/3 M KCl reference electrode) in the presence of 0.1 M H2SO4. After selection of suitable experimental conditions, the linear calibration curves for TB were obtained in the concentration range from 0.99 up to 54.5 mu M with the sensitivity of 0.07 mu A/mu M providing both differential pulse (DPV) and square-wave voltammetric (SWV) techniques, respectively. The elaborated voltammetric protocol yielded low detection limits of 0.42 and 0.51 mu M accompanied by adequate intra-day repeatability (relative standard deviation of 2.5 and 1.7%) using DPV and SWV procedure, respectively. The interference study revealed the reasonable selectivity when taking the target food samples into account. The practical applicability of the voltammetric protocol using a miniaturized BDDE was verified in the analysis of six commercially available brands of chocolate products with the determined mass percentages of TB ranging from 0.75 to 2.24% and from 0.69 to 2.15% using DPV and SWV procedure, respectively. The obtained results were also in a good agreement with those achieved by reference titration method with potentiometric indication. The progressive electrochemical sensor based on a miniaturized BDDE has appeared to be an attractive candidate for practical applications in food quality control. Besides, the proposed voltammetric protocol presents advantages when compared to others techniques (e.g. chromatography), concerning simplicity, cost, speed of analysis, waste generation (environmentally friendly) and samples pretreatment (only dilution in electrolyte solution prior to analysis).",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Microchemical Journal",
title = "A progressive electrochemical sensor for food quality control: Reliable determination of theobromine in chocolate products using a miniaturized boron-doped diamond electrode",
volume = "142",
pages = "297-304",
doi = "10.1016/j.microc.2018.07.007"
}

Šovrc, Ľ., Hasso, M., Sarakhman, O., Kianicková, K., Stanković, D.,& Otrisal, P.. (2018). A progressive electrochemical sensor for food quality control: Reliable determination of theobromine in chocolate products using a miniaturized boron-doped diamond electrode. in Microchemical Journal
Elsevier Science Bv, Amsterdam., 142, 297-304.
https://doi.org/10.1016/j.microc.2018.07.007

Šovrc Ľ, Hasso M, Sarakhman O, Kianicková K, Stanković D, Otrisal P. A progressive electrochemical sensor for food quality control: Reliable determination of theobromine in chocolate products using a miniaturized boron-doped diamond electrode. in Microchemical Journal. 2018;142:297-304.
doi:10.1016/j.microc.2018.07.007 .

Šovrc, Ľubomír, Hasso, Marek, Sarakhman, Olha, Kianicková, Kristína, Stanković, Dalibor, Otrisal, Pavel, "A progressive electrochemical sensor for food quality control: Reliable determination of theobromine in chocolate products using a miniaturized boron-doped diamond electrode" in Microchemical Journal, 142 (2018):297-304,
https://doi.org/10.1016/j.microc.2018.07.007 . .

TY  - JOUR
AU  - Cinková, Kristína
AU  - Kianicková, Kristína
AU  - Stanković, Dalibor
AU  - Vojs, Marian
AU  - Marton, Marian
AU  - Šovrc, Ľubomír
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2102
AB  - In this work, the electrochemical oxidation and subsequent determination of uric acid was investigated using boron-doped diamond electrodes with various B/C ratios (0-2000 ppm). The cyclic voltammetric study showed one irreversible oxidation peak at +(1.1-1.25) V (vs. Ag/AgCl/3 M KCl) in the presence of Britton-Robinson buffer (pH 2.25) depending on the boron content. Employing differential pulse voltammetry using the 2000 ppm boron-doped diamond electrode the acquired analytical parameters were as follows: a limit of detection of 7.7 M, a limit of quantification of 26 M and intra-day repeatability (relative standard deviation of 2.9% for n = 15). After performing an interference study, the method was applied to the determination of uric acid in biological samples (human urine). The uric acid concentrations determined in the urine samples were compared with the reference values stated in the literature. The proposed methodology using boron-doped diamond electrodes could find applications in uric acid sensing within clinical, pharmaceutical and environmental analysis.
PB  - Royal Soc Chemistry, Cambridge
T2  - Analytical Methods
T1  - The doping level of boron-doped diamond electrodes affects the voltammetric sensing ofuric acid
VL  - 10
IS  - 9
SP  - 991
EP  - 996
DO  - 10.1039/c7ay02720f
ER  - 

@article{
author = "Cinková, Kristína and Kianicková, Kristína and Stanković, Dalibor and Vojs, Marian and Marton, Marian and Šovrc, Ľubomír",
year = "2018",
abstract = "In this work, the electrochemical oxidation and subsequent determination of uric acid was investigated using boron-doped diamond electrodes with various B/C ratios (0-2000 ppm). The cyclic voltammetric study showed one irreversible oxidation peak at +(1.1-1.25) V (vs. Ag/AgCl/3 M KCl) in the presence of Britton-Robinson buffer (pH 2.25) depending on the boron content. Employing differential pulse voltammetry using the 2000 ppm boron-doped diamond electrode the acquired analytical parameters were as follows: a limit of detection of 7.7 M, a limit of quantification of 26 M and intra-day repeatability (relative standard deviation of 2.9% for n = 15). After performing an interference study, the method was applied to the determination of uric acid in biological samples (human urine). The uric acid concentrations determined in the urine samples were compared with the reference values stated in the literature. The proposed methodology using boron-doped diamond electrodes could find applications in uric acid sensing within clinical, pharmaceutical and environmental analysis.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Analytical Methods",
title = "The doping level of boron-doped diamond electrodes affects the voltammetric sensing ofuric acid",
volume = "10",
number = "9",
pages = "991-996",
doi = "10.1039/c7ay02720f"
}

Cinková, K., Kianicková, K., Stanković, D., Vojs, M., Marton, M.,& Šovrc, Ľ.. (2018). The doping level of boron-doped diamond electrodes affects the voltammetric sensing ofuric acid. in Analytical Methods
Royal Soc Chemistry, Cambridge., 10(9), 991-996.
https://doi.org/10.1039/c7ay02720f

Cinková K, Kianicková K, Stanković D, Vojs M, Marton M, Šovrc Ľ. The doping level of boron-doped diamond electrodes affects the voltammetric sensing ofuric acid. in Analytical Methods. 2018;10(9):991-996.
doi:10.1039/c7ay02720f .

Cinková, Kristína, Kianicková, Kristína, Stanković, Dalibor, Vojs, Marian, Marton, Marian, Šovrc, Ľubomír, "The doping level of boron-doped diamond electrodes affects the voltammetric sensing ofuric acid" in Analytical Methods, 10, no. 9 (2018):991-996,
https://doi.org/10.1039/c7ay02720f . .

TY  - DATA
AU  - Stanković, Dalibor
AU  - Ognjanović, Miloš
AU  - Martin, Fabian
AU  - Šovrc, Ľubomír
AU  - Mariano, Jose F. M. L.
AU  - Antić, Bratislav
PY  - 2017
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2956
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Analytical Biochemistry
T1  - Supplementary data for article : Stanković, D.; Ognjanović, M.; Martin, F.; Šovrc, Ľ.; Mariano, J. F. M. L.; Antic, B. Design of Titanium Nitride- and Wolfram Carbide-Doped RGO/GC Electrodes for Determination of Gallic Acid. Analytical Biochemistry 2017, 539, 104–112. https://doi.org/10.1016/j.ab.2017.10.018
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2956
ER  - 

@misc{
author = "Stanković, Dalibor and Ognjanović, Miloš and Martin, Fabian and Šovrc, Ľubomír and Mariano, Jose F. M. L. and Antić, Bratislav",
year = "2017, 2017",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Analytical Biochemistry",
title = "Supplementary data for article : Stanković, D.; Ognjanović, M.; Martin, F.; Šovrc, Ľ.; Mariano, J. F. M. L.; Antic, B. Design of Titanium Nitride- and Wolfram Carbide-Doped RGO/GC Electrodes for Determination of Gallic Acid. Analytical Biochemistry 2017, 539, 104–112. https://doi.org/10.1016/j.ab.2017.10.018",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2956"
}

Stanković, D., Ognjanović, M., Martin, F., Šovrc, Ľ., Mariano, J. F. M. L.,& Antić, B.. (2017). Supplementary data for article : Stanković, D.; Ognjanović, M.; Martin, F.; Šovrc, Ľ.; Mariano, J. F. M. L.; Antic, B. Design of Titanium Nitride- and Wolfram Carbide-Doped RGO/GC Electrodes for Determination of Gallic Acid. Analytical Biochemistry 2017, 539, 104–112. https://doi.org/10.1016/j.ab.2017.10.018. in Analytical Biochemistry
Academic Press Inc Elsevier Science, San Diego..
https://hdl.handle.net/21.15107/rcub_cherry_2956

Stanković D, Ognjanović M, Martin F, Šovrc Ľ, Mariano JFML, Antić B. Supplementary data for article : Stanković, D.; Ognjanović, M.; Martin, F.; Šovrc, Ľ.; Mariano, J. F. M. L.; Antic, B. Design of Titanium Nitride- and Wolfram Carbide-Doped RGO/GC Electrodes for Determination of Gallic Acid. Analytical Biochemistry 2017, 539, 104–112. https://doi.org/10.1016/j.ab.2017.10.018. in Analytical Biochemistry. 2017;.
https://hdl.handle.net/21.15107/rcub_cherry_2956 .

Stanković, Dalibor, Ognjanović, Miloš, Martin, Fabian, Šovrc, Ľubomír, Mariano, Jose F. M. L., Antić, Bratislav, "Supplementary data for article : Stanković, D.; Ognjanović, M.; Martin, F.; Šovrc, Ľ.; Mariano, J. F. M. L.; Antic, B. Design of Titanium Nitride- and Wolfram Carbide-Doped RGO/GC Electrodes for Determination of Gallic Acid. Analytical Biochemistry 2017, 539, 104–112. https://doi.org/10.1016/j.ab.2017.10.018" in Analytical Biochemistry (2017),
https://hdl.handle.net/21.15107/rcub_cherry_2956 .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Ognjanović, Miloš
AU  - Martin, Fabian
AU  - Šovrc, Ľubomír
AU  - Mariano, Jose F. M. L.
AU  - Antić, Bratislav
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2560
AB  - In the present paper, the electrochemical behavior and the properties of two modified glassy carbon (GC) electrodes used for quantification of gallic acid in sweet wines were compared. A comparative study was conducted between titanium nitride- or wolfram carbide-doped reduced graphene oxide, labeled as TNrGO and WCrGO, respectively, modified GC electrodes, which are promising composite nanomaterials for electroanalytical applications. For the first time, WCrGO was synthesized and its electroanalytical properties compared with those of TNrGO. Results showed that the proposed materials exhibited enhanced characteristics, e.g., low limits of detection (1.1 mu M and 3.1 mu M for TNrGO and WCrGO, respectively), wide linear ranges (for TNrGO 4.5-76 mu M and for WCrGO 10-100 mu M), low adsorption, and low background current, which make them promising candidates for electrochemical sensing applications.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Analytical Biochemistry
T1  - Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid
VL  - 539
SP  - 104
EP  - 112
DO  - 10.1016/j.ab.2017.10.018
ER  - 

@article{
author = "Stanković, Dalibor and Ognjanović, Miloš and Martin, Fabian and Šovrc, Ľubomír and Mariano, Jose F. M. L. and Antić, Bratislav",
year = "2017",
abstract = "In the present paper, the electrochemical behavior and the properties of two modified glassy carbon (GC) electrodes used for quantification of gallic acid in sweet wines were compared. A comparative study was conducted between titanium nitride- or wolfram carbide-doped reduced graphene oxide, labeled as TNrGO and WCrGO, respectively, modified GC electrodes, which are promising composite nanomaterials for electroanalytical applications. For the first time, WCrGO was synthesized and its electroanalytical properties compared with those of TNrGO. Results showed that the proposed materials exhibited enhanced characteristics, e.g., low limits of detection (1.1 mu M and 3.1 mu M for TNrGO and WCrGO, respectively), wide linear ranges (for TNrGO 4.5-76 mu M and for WCrGO 10-100 mu M), low adsorption, and low background current, which make them promising candidates for electrochemical sensing applications.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Analytical Biochemistry",
title = "Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid",
volume = "539",
pages = "104-112",
doi = "10.1016/j.ab.2017.10.018"
}

Stanković, D., Ognjanović, M., Martin, F., Šovrc, Ľ., Mariano, J. F. M. L.,& Antić, B.. (2017). Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid. in Analytical Biochemistry
Academic Press Inc Elsevier Science, San Diego., 539, 104-112.
https://doi.org/10.1016/j.ab.2017.10.018

Stanković D, Ognjanović M, Martin F, Šovrc Ľ, Mariano JFML, Antić B. Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid. in Analytical Biochemistry. 2017;539:104-112.
doi:10.1016/j.ab.2017.10.018 .

Stanković, Dalibor, Ognjanović, Miloš, Martin, Fabian, Šovrc, Ľubomír, Mariano, Jose F. M. L., Antić, Bratislav, "Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid" in Analytical Biochemistry, 539 (2017):104-112,
https://doi.org/10.1016/j.ab.2017.10.018 . .

TY  - JOUR
AU  - Samiec, Petr
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Vojs, Marian
AU  - Marton, Marian
AU  - Navrátilová, Zuzana
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3080
AB  - The boron-doped diamond electrodes (BDDEs) with different dopant levels were applied as advanced, mercury-free and modification-free electroanalytical platforms for simple and reliable quantification of benzodiazepines, bromazepam (BZ) and alprazolam (ALZ). Cyclic voltammetric measurements revealed that the electrode reactions of both analytes were manifested by one irreversible and diffusion-controlled reduction peak at -1.10V in Britton-Robinson buffer of pH 11 for BZ using lab-made BDDE with 1000 ppm B/C ratio and -0.84V in BR buffer of pH 5 for ALZ using commercial BDDE with 1000 ppm B/C ratio. Differential pulse voltammetry was used for construction of calibration curves for BZ and ALZ, respectively, with the analytical parameters as follows: the linear dynamic ranges of 1 x 10(-6)-1 x 10(-4) and 8 x 10(-7)-1 x 10(-4) mol/L, the detection limit of 3.1 x 10(-7) and 6.4 x 10(-7) mol/L and the excellent repeatability with the relative standard deviation below 3% for both drugs. The developed methods were applied to analysis of the pharmaceutical tablets with the recoveries from 97.33 to 100.85% for BZ and from 94.14 to 101.32% for ALZ. The usage of BDDEs as advanced electrochemical sensors in drug analysis represents a facile and effective analytical approach which may replace mercury-based sensors and chemically modified electrodes in previous benzodiazepines sensing.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators, B: Chemical
T1  - Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes
VL  - 245
SP  - 963
EP  - 971
DO  - 10.1016/j.snb.2017.02.023
ER  - 

@article{
author = "Samiec, Petr and Šovrc, Ľubomír and Stanković, Dalibor and Vojs, Marian and Marton, Marian and Navrátilová, Zuzana",
year = "2017",
abstract = "The boron-doped diamond electrodes (BDDEs) with different dopant levels were applied as advanced, mercury-free and modification-free electroanalytical platforms for simple and reliable quantification of benzodiazepines, bromazepam (BZ) and alprazolam (ALZ). Cyclic voltammetric measurements revealed that the electrode reactions of both analytes were manifested by one irreversible and diffusion-controlled reduction peak at -1.10V in Britton-Robinson buffer of pH 11 for BZ using lab-made BDDE with 1000 ppm B/C ratio and -0.84V in BR buffer of pH 5 for ALZ using commercial BDDE with 1000 ppm B/C ratio. Differential pulse voltammetry was used for construction of calibration curves for BZ and ALZ, respectively, with the analytical parameters as follows: the linear dynamic ranges of 1 x 10(-6)-1 x 10(-4) and 8 x 10(-7)-1 x 10(-4) mol/L, the detection limit of 3.1 x 10(-7) and 6.4 x 10(-7) mol/L and the excellent repeatability with the relative standard deviation below 3% for both drugs. The developed methods were applied to analysis of the pharmaceutical tablets with the recoveries from 97.33 to 100.85% for BZ and from 94.14 to 101.32% for ALZ. The usage of BDDEs as advanced electrochemical sensors in drug analysis represents a facile and effective analytical approach which may replace mercury-based sensors and chemically modified electrodes in previous benzodiazepines sensing.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators, B: Chemical",
title = "Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes",
volume = "245",
pages = "963-971",
doi = "10.1016/j.snb.2017.02.023"
}

Samiec, P., Šovrc, Ľ., Stanković, D., Vojs, M., Marton, M.,& Navrátilová, Z.. (2017). Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes. in Sensors and Actuators, B: Chemical
Elsevier Science Sa, Lausanne., 245, 963-971.
https://doi.org/10.1016/j.snb.2017.02.023

Samiec P, Šovrc Ľ, Stanković D, Vojs M, Marton M, Navrátilová Z. Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes. in Sensors and Actuators, B: Chemical. 2017;245:963-971.
doi:10.1016/j.snb.2017.02.023 .

Samiec, Petr, Šovrc, Ľubomír, Stanković, Dalibor, Vojs, Marian, Marton, Marian, Navrátilová, Zuzana, "Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes" in Sensors and Actuators, B: Chemical, 245 (2017):963-971,
https://doi.org/10.1016/j.snb.2017.02.023 . .

TY  - DATA
AU  - Samiec, Petr
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Vojs, Marian
AU  - Marton, Marian
AU  - Navrátilová, Zuzana
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3081
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators, B: Chemical
T1  - Supplementary data for article: Samiec, P.; Švorc, Ľ.; Stanković, D. M.; Vojs, M.; Marton, M.; Navrátilová, Z. Mercury-Free and Modification-Free Electroanalytical Approach towards Bromazepam and Alprazolam Sensing: A Facile and Efficient Assay for Their Quantification in Pharmaceuticals Using Boron-Doped Diamond Electrodes. Sensors and Actuators, B: Chemical 2017, 245, 963–971. https://doi.org/10.1016/j.snb.2017.02.023
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3081
ER  - 

@misc{
author = "Samiec, Petr and Šovrc, Ľubomír and Stanković, Dalibor and Vojs, Marian and Marton, Marian and Navrátilová, Zuzana",
year = "2017",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators, B: Chemical",
title = "Supplementary data for article: Samiec, P.; Švorc, Ľ.; Stanković, D. M.; Vojs, M.; Marton, M.; Navrátilová, Z. Mercury-Free and Modification-Free Electroanalytical Approach towards Bromazepam and Alprazolam Sensing: A Facile and Efficient Assay for Their Quantification in Pharmaceuticals Using Boron-Doped Diamond Electrodes. Sensors and Actuators, B: Chemical 2017, 245, 963–971. https://doi.org/10.1016/j.snb.2017.02.023",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3081"
}

Samiec, P., Šovrc, Ľ., Stanković, D., Vojs, M., Marton, M.,& Navrátilová, Z.. (2017). Supplementary data for article: Samiec, P.; Švorc, Ľ.; Stanković, D. M.; Vojs, M.; Marton, M.; Navrátilová, Z. Mercury-Free and Modification-Free Electroanalytical Approach towards Bromazepam and Alprazolam Sensing: A Facile and Efficient Assay for Their Quantification in Pharmaceuticals Using Boron-Doped Diamond Electrodes. Sensors and Actuators, B: Chemical 2017, 245, 963–971. https://doi.org/10.1016/j.snb.2017.02.023. in Sensors and Actuators, B: Chemical
Elsevier Science Sa, Lausanne..
https://hdl.handle.net/21.15107/rcub_cherry_3081

Samiec P, Šovrc Ľ, Stanković D, Vojs M, Marton M, Navrátilová Z. Supplementary data for article: Samiec, P.; Švorc, Ľ.; Stanković, D. M.; Vojs, M.; Marton, M.; Navrátilová, Z. Mercury-Free and Modification-Free Electroanalytical Approach towards Bromazepam and Alprazolam Sensing: A Facile and Efficient Assay for Their Quantification in Pharmaceuticals Using Boron-Doped Diamond Electrodes. Sensors and Actuators, B: Chemical 2017, 245, 963–971. https://doi.org/10.1016/j.snb.2017.02.023. in Sensors and Actuators, B: Chemical. 2017;.
https://hdl.handle.net/21.15107/rcub_cherry_3081 .

Samiec, Petr, Šovrc, Ľubomír, Stanković, Dalibor, Vojs, Marian, Marton, Marian, Navrátilová, Zuzana, "Supplementary data for article: Samiec, P.; Švorc, Ľ.; Stanković, D. M.; Vojs, M.; Marton, M.; Navrátilová, Z. Mercury-Free and Modification-Free Electroanalytical Approach towards Bromazepam and Alprazolam Sensing: A Facile and Efficient Assay for Their Quantification in Pharmaceuticals Using Boron-Doped Diamond Electrodes. Sensors and Actuators, B: Chemical 2017, 245, 963–971. https://doi.org/10.1016/j.snb.2017.02.023" in Sensors and Actuators, B: Chemical (2017),
https://hdl.handle.net/21.15107/rcub_cherry_3081 .

TY  - DATA
AU  - Šovrc, Ľubomír
AU  - Borovska, Katarina
AU  - Cinková, Kristína
AU  - Stanković, Dalibor
AU  - Planková, Alexandra
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2997
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Supplementary data for article: Šovrc, Ľ.; Borovska, K.; Cinková, K.; Stanković, D.; Planková, A. Advanced Electrochemical Platform for Determination of Cytostatic Drug Flutamide in Various Matrices Using a Boron-Doped Diamond Electrode. Electrochimica Acta 2017, 251, 621–630. https://doi.org/10.1016/j.electacta.2017.08.077
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2997
ER  - 

@misc{
author = "Šovrc, Ľubomír and Borovska, Katarina and Cinková, Kristína and Stanković, Dalibor and Planková, Alexandra",
year = "2017",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Supplementary data for article: Šovrc, Ľ.; Borovska, K.; Cinková, K.; Stanković, D.; Planková, A. Advanced Electrochemical Platform for Determination of Cytostatic Drug Flutamide in Various Matrices Using a Boron-Doped Diamond Electrode. Electrochimica Acta 2017, 251, 621–630. https://doi.org/10.1016/j.electacta.2017.08.077",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2997"
}

Šovrc, Ľ., Borovska, K., Cinková, K., Stanković, D.,& Planková, A.. (2017). Supplementary data for article: Šovrc, Ľ.; Borovska, K.; Cinková, K.; Stanković, D.; Planková, A. Advanced Electrochemical Platform for Determination of Cytostatic Drug Flutamide in Various Matrices Using a Boron-Doped Diamond Electrode. Electrochimica Acta 2017, 251, 621–630. https://doi.org/10.1016/j.electacta.2017.08.077. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford..
https://hdl.handle.net/21.15107/rcub_cherry_2997

Šovrc Ľ, Borovska K, Cinková K, Stanković D, Planková A. Supplementary data for article: Šovrc, Ľ.; Borovska, K.; Cinková, K.; Stanković, D.; Planková, A. Advanced Electrochemical Platform for Determination of Cytostatic Drug Flutamide in Various Matrices Using a Boron-Doped Diamond Electrode. Electrochimica Acta 2017, 251, 621–630. https://doi.org/10.1016/j.electacta.2017.08.077. in Electrochimica Acta. 2017;.
https://hdl.handle.net/21.15107/rcub_cherry_2997 .

Šovrc, Ľubomír, Borovska, Katarina, Cinková, Kristína, Stanković, Dalibor, Planková, Alexandra, "Supplementary data for article: Šovrc, Ľ.; Borovska, K.; Cinková, K.; Stanković, D.; Planková, A. Advanced Electrochemical Platform for Determination of Cytostatic Drug Flutamide in Various Matrices Using a Boron-Doped Diamond Electrode. Electrochimica Acta 2017, 251, 621–630. https://doi.org/10.1016/j.electacta.2017.08.077" in Electrochimica Acta (2017),
https://hdl.handle.net/21.15107/rcub_cherry_2997 .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Borovska, Katarina
AU  - Cinková, Kristína
AU  - Stanković, Dalibor
AU  - Planková, Alexandra
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2996
AB  - An innovative, rapid and simple electrochemical approach for the reliable quantification of cytostatic drug flutamide (FLU) in various matrices is herein proposed. This platform involves coupling of differential pulse (DPV) and square-wave voltammetry (SWV) with a boron-doped diamond (BDD) electrode as the working electrode and 0.1 M sulphuric acid as the supporting electrolyte. For the first time, the voltammetric profile of FLU was manifested by three irreversible and diffusion-controlled oxidation peaks at + 1.1 (P1), + 1.4 (P2) and + 1.9 V (P3). The analytical performance evaluation was assessed for all three peaks, using both pulse voltammetric techniques with the optimized operating parameters and the highest sensitivity of 1.76 nA/mu M was accomplished for P2 using DPV and 3.54 nA/mu M for P3 using SWV. The corresponding linear concentration ranges were found to be 0.99-42.9 and 4.8-35.5 mu M with the detection limits of 0.42 and 0.18 mu M, respectively. The repeatability varied, depending on the oxidation peaks of FLU, with the relative standard deviations in the range of 3.3-8.8% and 2.9-9.3% for DPV and SWV, respectively. The proposed electrochemical platform was successfully applied in the analysis of pharmaceutical formulations, spiked human urine and water samples with the significant mean recoveries. Using BDD electrode, the current work establishes an advanced, simple and rapid alternative platform to so far used toxic mercury-based electrodes and time demanding chemically modified electrodes in cytostatic sensing. Besides, BDD electrode represents a comfortable electrochemical sensor for routine analysis in pharmaceutical, clinical and environmental chemistry.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode
VL  - 251
SP  - 621
EP  - 630
DO  - 10.1016/j.electacta.2017.08.077
ER  - 

@article{
author = "Šovrc, Ľubomír and Borovska, Katarina and Cinková, Kristína and Stanković, Dalibor and Planková, Alexandra",
year = "2017",
abstract = "An innovative, rapid and simple electrochemical approach for the reliable quantification of cytostatic drug flutamide (FLU) in various matrices is herein proposed. This platform involves coupling of differential pulse (DPV) and square-wave voltammetry (SWV) with a boron-doped diamond (BDD) electrode as the working electrode and 0.1 M sulphuric acid as the supporting electrolyte. For the first time, the voltammetric profile of FLU was manifested by three irreversible and diffusion-controlled oxidation peaks at + 1.1 (P1), + 1.4 (P2) and + 1.9 V (P3). The analytical performance evaluation was assessed for all three peaks, using both pulse voltammetric techniques with the optimized operating parameters and the highest sensitivity of 1.76 nA/mu M was accomplished for P2 using DPV and 3.54 nA/mu M for P3 using SWV. The corresponding linear concentration ranges were found to be 0.99-42.9 and 4.8-35.5 mu M with the detection limits of 0.42 and 0.18 mu M, respectively. The repeatability varied, depending on the oxidation peaks of FLU, with the relative standard deviations in the range of 3.3-8.8% and 2.9-9.3% for DPV and SWV, respectively. The proposed electrochemical platform was successfully applied in the analysis of pharmaceutical formulations, spiked human urine and water samples with the significant mean recoveries. Using BDD electrode, the current work establishes an advanced, simple and rapid alternative platform to so far used toxic mercury-based electrodes and time demanding chemically modified electrodes in cytostatic sensing. Besides, BDD electrode represents a comfortable electrochemical sensor for routine analysis in pharmaceutical, clinical and environmental chemistry.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode",
volume = "251",
pages = "621-630",
doi = "10.1016/j.electacta.2017.08.077"
}

Šovrc, Ľ., Borovska, K., Cinková, K., Stanković, D.,& Planková, A.. (2017). Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 251, 621-630.
https://doi.org/10.1016/j.electacta.2017.08.077

Šovrc Ľ, Borovska K, Cinková K, Stanković D, Planková A. Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode. in Electrochimica Acta. 2017;251:621-630.
doi:10.1016/j.electacta.2017.08.077 .

Šovrc, Ľubomír, Borovska, Katarina, Cinková, Kristína, Stanković, Dalibor, Planková, Alexandra, "Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode" in Electrochimica Acta, 251 (2017):621-630,
https://doi.org/10.1016/j.electacta.2017.08.077 . .

TY  - JOUR
AU  - Samiec, Petr
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Vojs, Marian
AU  - Marton, Marian
AU  - Navrátilová, Zuzana
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2442
AB  - The boron-doped diamond electrodes (BDDEs) with different dopant levels were applied as advanced, mercury-free and modification-free electroanalytical platforms for simple and reliable quantification of benzodiazepines, bromazepam (BZ) and alprazolam (ALZ). Cyclic voltammetric measurements revealed that the electrode reactions of both analytes were manifested by one irreversible and diffusion-controlled reduction peak at -1.10V in Britton-Robinson buffer of pH 11 for BZ using lab-made BDDE with 1000 ppm B/C ratio and -0.84V in BR buffer of pH 5 for ALZ using commercial BDDE with 1000 ppm B/C ratio. Differential pulse voltammetry was used for construction of calibration curves for BZ and ALZ, respectively, with the analytical parameters as follows: the linear dynamic ranges of 1 x 10(-6)-1 x 10(-4) and 8 x 10(-7)-1 x 10(-4) mol/L, the detection limit of 3.1 x 10(-7) and 6.4 x 10(-7) mol/L and the excellent repeatability with the relative standard deviation below 3% for both drugs. The developed methods were applied to analysis of the pharmaceutical tablets with the recoveries from 97.33 to 100.85% for BZ and from 94.14 to 101.32% for ALZ. The usage of BDDEs as advanced electrochemical sensors in drug analysis represents a facile and effective analytical approach which may replace mercury-based sensors and chemically modified electrodes in previous benzodiazepines sensing.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators B: Chemical
T1  - Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes
VL  - 245
SP  - 963
EP  - 971
DO  - 10.1016/j.snb.2017.02.023
ER  - 

@article{
author = "Samiec, Petr and Šovrc, Ľubomír and Stanković, Dalibor and Vojs, Marian and Marton, Marian and Navrátilová, Zuzana",
year = "2017",
abstract = "The boron-doped diamond electrodes (BDDEs) with different dopant levels were applied as advanced, mercury-free and modification-free electroanalytical platforms for simple and reliable quantification of benzodiazepines, bromazepam (BZ) and alprazolam (ALZ). Cyclic voltammetric measurements revealed that the electrode reactions of both analytes were manifested by one irreversible and diffusion-controlled reduction peak at -1.10V in Britton-Robinson buffer of pH 11 for BZ using lab-made BDDE with 1000 ppm B/C ratio and -0.84V in BR buffer of pH 5 for ALZ using commercial BDDE with 1000 ppm B/C ratio. Differential pulse voltammetry was used for construction of calibration curves for BZ and ALZ, respectively, with the analytical parameters as follows: the linear dynamic ranges of 1 x 10(-6)-1 x 10(-4) and 8 x 10(-7)-1 x 10(-4) mol/L, the detection limit of 3.1 x 10(-7) and 6.4 x 10(-7) mol/L and the excellent repeatability with the relative standard deviation below 3% for both drugs. The developed methods were applied to analysis of the pharmaceutical tablets with the recoveries from 97.33 to 100.85% for BZ and from 94.14 to 101.32% for ALZ. The usage of BDDEs as advanced electrochemical sensors in drug analysis represents a facile and effective analytical approach which may replace mercury-based sensors and chemically modified electrodes in previous benzodiazepines sensing.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators B: Chemical",
title = "Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes",
volume = "245",
pages = "963-971",
doi = "10.1016/j.snb.2017.02.023"
}

Samiec, P., Šovrc, Ľ., Stanković, D., Vojs, M., Marton, M.,& Navrátilová, Z.. (2017). Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes. in Sensors and Actuators B: Chemical
Elsevier Science Sa, Lausanne., 245, 963-971.
https://doi.org/10.1016/j.snb.2017.02.023

Samiec P, Šovrc Ľ, Stanković D, Vojs M, Marton M, Navrátilová Z. Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes. in Sensors and Actuators B: Chemical. 2017;245:963-971.
doi:10.1016/j.snb.2017.02.023 .

Samiec, Petr, Šovrc, Ľubomír, Stanković, Dalibor, Vojs, Marian, Marton, Marian, Navrátilová, Zuzana, "Mercury-free and modification-free electroanalytical approach towards bromazepam and alprazolam sensing: A facile and efficient assay for their quantification in pharmaceuticals using boron-doped diamond electrodes" in Sensors and Actuators B: Chemical, 245 (2017):963-971,
https://doi.org/10.1016/j.snb.2017.02.023 . .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Borovska, Katarina
AU  - Cinková, Kristína
AU  - Stanković, Dalibor
AU  - Planková, Alexandra
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2540
AB  - An innovative, rapid and simple electrochemical approach for the reliable quantification of cytostatic drug flutamide (FLU) in various matrices is herein proposed. This platform involves coupling of differential pulse (DPV) and square-wave voltammetry (SWV) with a boron-doped diamond (BDD) electrode as the working electrode and 0.1 M sulphuric acid as the supporting electrolyte. For the first time, the voltammetric profile of FLU was manifested by three irreversible and diffusion-controlled oxidation peaks at + 1.1 (P1), + 1.4 (P2) and + 1.9 V (P3). The analytical performance evaluation was assessed for all three peaks, using both pulse voltammetric techniques with the optimized operating parameters and the highest sensitivity of 1.76 nA/mu M was accomplished for P2 using DPV and 3.54 nA/mu M for P3 using SWV. The corresponding linear concentration ranges were found to be 0.99-42.9 and 4.8-35.5 mu M with the detection limits of 0.42 and 0.18 mu M, respectively. The repeatability varied, depending on the oxidation peaks of FLU, with the relative standard deviations in the range of 3.3-8.8% and 2.9-9.3% for DPV and SWV, respectively. The proposed electrochemical platform was successfully applied in the analysis of pharmaceutical formulations, spiked human urine and water samples with the significant mean recoveries. Using BDD electrode, the current work establishes an advanced, simple and rapid alternative platform to so far used toxic mercury-based electrodes and time demanding chemically modified electrodes in cytostatic sensing. Besides, BDD electrode represents a comfortable electrochemical sensor for routine analysis in pharmaceutical, clinical and environmental chemistry. (C) 2017 Elsevier Ltd. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode
VL  - 251
SP  - 621
EP  - 630
DO  - 10.1016/j.electacta.2017.08.077
ER  - 

@article{
author = "Šovrc, Ľubomír and Borovska, Katarina and Cinková, Kristína and Stanković, Dalibor and Planková, Alexandra",
year = "2017",
abstract = "An innovative, rapid and simple electrochemical approach for the reliable quantification of cytostatic drug flutamide (FLU) in various matrices is herein proposed. This platform involves coupling of differential pulse (DPV) and square-wave voltammetry (SWV) with a boron-doped diamond (BDD) electrode as the working electrode and 0.1 M sulphuric acid as the supporting electrolyte. For the first time, the voltammetric profile of FLU was manifested by three irreversible and diffusion-controlled oxidation peaks at + 1.1 (P1), + 1.4 (P2) and + 1.9 V (P3). The analytical performance evaluation was assessed for all three peaks, using both pulse voltammetric techniques with the optimized operating parameters and the highest sensitivity of 1.76 nA/mu M was accomplished for P2 using DPV and 3.54 nA/mu M for P3 using SWV. The corresponding linear concentration ranges were found to be 0.99-42.9 and 4.8-35.5 mu M with the detection limits of 0.42 and 0.18 mu M, respectively. The repeatability varied, depending on the oxidation peaks of FLU, with the relative standard deviations in the range of 3.3-8.8% and 2.9-9.3% for DPV and SWV, respectively. The proposed electrochemical platform was successfully applied in the analysis of pharmaceutical formulations, spiked human urine and water samples with the significant mean recoveries. Using BDD electrode, the current work establishes an advanced, simple and rapid alternative platform to so far used toxic mercury-based electrodes and time demanding chemically modified electrodes in cytostatic sensing. Besides, BDD electrode represents a comfortable electrochemical sensor for routine analysis in pharmaceutical, clinical and environmental chemistry. (C) 2017 Elsevier Ltd. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode",
volume = "251",
pages = "621-630",
doi = "10.1016/j.electacta.2017.08.077"
}

Šovrc, Ľ., Borovska, K., Cinková, K., Stanković, D.,& Planková, A.. (2017). Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 251, 621-630.
https://doi.org/10.1016/j.electacta.2017.08.077

Šovrc Ľ, Borovska K, Cinková K, Stanković D, Planková A. Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode. in Electrochimica Acta. 2017;251:621-630.
doi:10.1016/j.electacta.2017.08.077 .

Šovrc, Ľubomír, Borovska, Katarina, Cinková, Kristína, Stanković, Dalibor, Planková, Alexandra, "Advanced electrochemical platform for determination of cytostatic drug flutamide in various matrices using a boron-doped diamond electrode" in Electrochimica Acta, 251 (2017):621-630,
https://doi.org/10.1016/j.electacta.2017.08.077 . .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Šovrc, Ľubomír
AU  - Mariano, Jose F. M. L.
AU  - Ortner, Astrid
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2534
AB  - Colchicine (COLC) is a natural toxic product and secondary metabolite most commonly used to treat gout. In this study, its electrochemical behavior and determination was investigated by employing modification-free boron-doped diamond electrode (BDDE). Besides, its interaction with DNA was monitored using electrochemical methods. It was found that oxidation of this compound proceeds in two steps, where first sharp and well defined oxidation peak occurs at potential of around 1.19V, and second one at around 1.37V, in Britton-Robinson buffer solution at pH7.5. Wide dynamic range from 1 to 100 mu M was obtained with a detection limit (3 sigma(intercept)/slope) of a 0.26 mu M, based on the evaluation of first oxidation peak using differential pulse voltammetry. The proposed method was also found to be suitable for monitoring interaction of this drug with DNA as important segment for medical use. Concerning the validation, the analytical procedure shows excellent selectivity and sensitivity toward COLC detection and after method development it was successfully used for its quantification in pharmaceutical preparation and human serum sample, with satisfactory recovery. Obviously, this approach can be promising replacement for time-consuming and expensive separation methods.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA
VL  - 29
IS  - 10
SP  - 2276
EP  - 2281
DO  - 10.1002/elan.201700233
ER  - 

@article{
author = "Stanković, Dalibor and Šovrc, Ľubomír and Mariano, Jose F. M. L. and Ortner, Astrid and Kalcher, Kurt",
year = "2017",
abstract = "Colchicine (COLC) is a natural toxic product and secondary metabolite most commonly used to treat gout. In this study, its electrochemical behavior and determination was investigated by employing modification-free boron-doped diamond electrode (BDDE). Besides, its interaction with DNA was monitored using electrochemical methods. It was found that oxidation of this compound proceeds in two steps, where first sharp and well defined oxidation peak occurs at potential of around 1.19V, and second one at around 1.37V, in Britton-Robinson buffer solution at pH7.5. Wide dynamic range from 1 to 100 mu M was obtained with a detection limit (3 sigma(intercept)/slope) of a 0.26 mu M, based on the evaluation of first oxidation peak using differential pulse voltammetry. The proposed method was also found to be suitable for monitoring interaction of this drug with DNA as important segment for medical use. Concerning the validation, the analytical procedure shows excellent selectivity and sensitivity toward COLC detection and after method development it was successfully used for its quantification in pharmaceutical preparation and human serum sample, with satisfactory recovery. Obviously, this approach can be promising replacement for time-consuming and expensive separation methods.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA",
volume = "29",
number = "10",
pages = "2276-2281",
doi = "10.1002/elan.201700233"
}

Stanković, D., Šovrc, Ľ., Mariano, J. F. M. L., Ortner, A.,& Kalcher, K.. (2017). Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA. in Electroanalysis
Wiley-V C H Verlag Gmbh, Weinheim., 29(10), 2276-2281.
https://doi.org/10.1002/elan.201700233

Stanković D, Šovrc Ľ, Mariano JFML, Ortner A, Kalcher K. Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA. in Electroanalysis. 2017;29(10):2276-2281.
doi:10.1002/elan.201700233 .

Stanković, Dalibor, Šovrc, Ľubomír, Mariano, Jose F. M. L., Ortner, Astrid, Kalcher, Kurt, "Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA" in Electroanalysis, 29, no. 10 (2017):2276-2281,
https://doi.org/10.1002/elan.201700233 . .

TY  - JOUR
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Chaiyo, Sudkate
AU  - Šovrc, Ľubomír
AU  - Kalcher, Kurt
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1926
AB  - A carbon paste electrode bulk was modified with MnO2 and investigated for use as an electrochemical sensor for riboflavin (vitamin B-2) using differential pulse voltammetry (DPV). Riboflavin displays a well expressed oxidation peak at -0.15 V (versus Ag/AgCl) in solutions with a pH value of 2. Effects of pH value, pulse amplitude and pulse time were optimized by employing DPV. The signals obtained are linearly related to the concentrations of riboflavin in the range from 0.02 to 9 mu M. Other features include a 15 nM detection limit, and good reproducibility (+/- 3 %) and repeatability (+/- 2 %). Interferences by common compounds were tested, and the method was successfully applied to the determination of riboflavin in pharmaceutical formulations where is gave recoveries in the range from 95 to 97 %.
PB  - Springer Wien, Wien
T2  - Microchimica Acta
T1  - Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
VL  - 183
IS  - 5
SP  - 1619
EP  - 1624
DO  - 10.1007/s00604-016-1789-4
ER  - 

@article{
author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Šovrc, Ľubomír and Kalcher, Kurt",
year = "2016",
abstract = "A carbon paste electrode bulk was modified with MnO2 and investigated for use as an electrochemical sensor for riboflavin (vitamin B-2) using differential pulse voltammetry (DPV). Riboflavin displays a well expressed oxidation peak at -0.15 V (versus Ag/AgCl) in solutions with a pH value of 2. Effects of pH value, pulse amplitude and pulse time were optimized by employing DPV. The signals obtained are linearly related to the concentrations of riboflavin in the range from 0.02 to 9 mu M. Other features include a 15 nM detection limit, and good reproducibility (+/- 3 %) and repeatability (+/- 2 %). Interferences by common compounds were tested, and the method was successfully applied to the determination of riboflavin in pharmaceutical formulations where is gave recoveries in the range from 95 to 97 %.",
publisher = "Springer Wien, Wien",
journal = "Microchimica Acta",
title = "Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin",
volume = "183",
number = "5",
pages = "1619-1624",
doi = "10.1007/s00604-016-1789-4"
}

Mehmeti, E., Stanković, D., Chaiyo, S., Šovrc, Ľ.,& Kalcher, K.. (2016). Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin. in Microchimica Acta
Springer Wien, Wien., 183(5), 1619-1624.
https://doi.org/10.1007/s00604-016-1789-4

Mehmeti E, Stanković D, Chaiyo S, Šovrc Ľ, Kalcher K. Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin. in Microchimica Acta. 2016;183(5):1619-1624.
doi:10.1007/s00604-016-1789-4 .

Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Šovrc, Ľubomír, Kalcher, Kurt, "Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin" in Microchimica Acta, 183, no. 5 (2016):1619-1624,
https://doi.org/10.1007/s00604-016-1789-4 . .

TY  - JOUR
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Chaiyo, Sudkate
AU  - Šovrc, Ľubomír
AU  - Ortner, Astrid
AU  - Kalcher, Kurt
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2259
AB  - A simple, sensitive, and economically viable electrochemical method for the determination of ajmalicine was developed. The procedure involves a glassy carbon electrode modified with gold nanoparticles (GCE/AuNPs). In the work presented here gold nanoparticles were attached to the glassy carbon electrode by adsorption. Cyclic voltammetry was used for the first time for the electrochemical characterization of ajmalicine and differential pulse voltammetry for its quantitative determination. Britton-Robinson buffer solution in a range of pH values served as supporting electrolyte. The experimental conditions were optimized and it was found that ajmalicine provided a well-defined oxidation peak at a potential of +0.8 V vs. Ag/AgCl (3 M KCl). The method for the determination of ajmalicine showed a dynamic range for concentrations from 5 to 50 A mu M with a detection limit of 1.7 A mu M, good repeatability (RSD of 1.4 %) and reproducibility (RSD of 2.5 %). The effect of possible interferents (yohimbine, reserpine) appeared to be negligible. The proposed procedure was successfully applied for the first time to the determination of ajmalicine in commercially available oral solutions for medical applications with results in good agreement with the declared content of ajmalicine. [GRAPHICS]
PB  - Springer Wien, Wien
T2  - Monatshefte Fur Chemie
T1  - Electrochemical determination of ajmalicine using glassy carbon electrode modified with gold nanoparticles
VL  - 147
IS  - 7
SP  - 1161
EP  - 1166
DO  - 10.1007/s00706-016-1741-7
ER  - 

@article{
author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Šovrc, Ľubomír and Ortner, Astrid and Kalcher, Kurt",
year = "2016",
abstract = "A simple, sensitive, and economically viable electrochemical method for the determination of ajmalicine was developed. The procedure involves a glassy carbon electrode modified with gold nanoparticles (GCE/AuNPs). In the work presented here gold nanoparticles were attached to the glassy carbon electrode by adsorption. Cyclic voltammetry was used for the first time for the electrochemical characterization of ajmalicine and differential pulse voltammetry for its quantitative determination. Britton-Robinson buffer solution in a range of pH values served as supporting electrolyte. The experimental conditions were optimized and it was found that ajmalicine provided a well-defined oxidation peak at a potential of +0.8 V vs. Ag/AgCl (3 M KCl). The method for the determination of ajmalicine showed a dynamic range for concentrations from 5 to 50 A mu M with a detection limit of 1.7 A mu M, good repeatability (RSD of 1.4 %) and reproducibility (RSD of 2.5 %). The effect of possible interferents (yohimbine, reserpine) appeared to be negligible. The proposed procedure was successfully applied for the first time to the determination of ajmalicine in commercially available oral solutions for medical applications with results in good agreement with the declared content of ajmalicine. [GRAPHICS]",
publisher = "Springer Wien, Wien",
journal = "Monatshefte Fur Chemie",
title = "Electrochemical determination of ajmalicine using glassy carbon electrode modified with gold nanoparticles",
volume = "147",
number = "7",
pages = "1161-1166",
doi = "10.1007/s00706-016-1741-7"
}

Mehmeti, E., Stanković, D., Chaiyo, S., Šovrc, Ľ., Ortner, A.,& Kalcher, K.. (2016). Electrochemical determination of ajmalicine using glassy carbon electrode modified with gold nanoparticles. in Monatshefte Fur Chemie
Springer Wien, Wien., 147(7), 1161-1166.
https://doi.org/10.1007/s00706-016-1741-7

Mehmeti E, Stanković D, Chaiyo S, Šovrc Ľ, Ortner A, Kalcher K. Electrochemical determination of ajmalicine using glassy carbon electrode modified with gold nanoparticles. in Monatshefte Fur Chemie. 2016;147(7):1161-1166.
doi:10.1007/s00706-016-1741-7 .

Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Šovrc, Ľubomír, Ortner, Astrid, Kalcher, Kurt, "Electrochemical determination of ajmalicine using glassy carbon electrode modified with gold nanoparticles" in Monatshefte Fur Chemie, 147, no. 7 (2016):1161-1166,
https://doi.org/10.1007/s00706-016-1741-7 . .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Cinková, Kristína
AU  - Samphao, Anchalee
AU  - Stanković, Dalibor
AU  - Mehmeti, Eda
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1702
AB  - A novel analytical approach for the sensitive determination of a beta-carboline alkaloid, harmaline, was developed using pulse voltammetric techniques with a boron-doped diamond electrode. Cyclic voltammetry showed two irreversible oxidation peaks at about +0.90 and +1.20 V (vs. Ag/AgCl) in Britton-Robinson buffer solution at pH 5. Under optimized experimental conditions, differential pulse and square-wave voltammetry were elaborated for the determination of harmaline in a linear concentration range from 0.2 to 100.7 and from 0.4 to 104.5 mu mol L-1, respectively, with detection limits of 0.08 and 0.2 mu mol L-1, respectively. The practical feasibility of the developed method was demonstrated by quantification of harmaline in the extracts of natural food products such as Syrian rue (Peganum harmala, also known as esphant, harmal, yiizerlik) seeds, locally used as condiment and medicine in Turkey and the Near and Middle East, and the South American shamanic drink component Ayahuasca liane (Banisteriopsis caapi) with results in good agreement with those obtained by high-performance liquid chromatography as a reference method. The proposed sensor represents an effective electrochemical tool and inexpensive alternative for quality control analysis of food products containing harmaline.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Voltammetric determination of harmaline in natural food products using boron-doped diamond electrode
VL  - 744
SP  - 37
EP  - 44
DO  - 10.1016/j.jelechem.2015.03.004
ER  - 

@article{
author = "Šovrc, Ľubomír and Cinková, Kristína and Samphao, Anchalee and Stanković, Dalibor and Mehmeti, Eda and Kalcher, Kurt",
year = "2015",
abstract = "A novel analytical approach for the sensitive determination of a beta-carboline alkaloid, harmaline, was developed using pulse voltammetric techniques with a boron-doped diamond electrode. Cyclic voltammetry showed two irreversible oxidation peaks at about +0.90 and +1.20 V (vs. Ag/AgCl) in Britton-Robinson buffer solution at pH 5. Under optimized experimental conditions, differential pulse and square-wave voltammetry were elaborated for the determination of harmaline in a linear concentration range from 0.2 to 100.7 and from 0.4 to 104.5 mu mol L-1, respectively, with detection limits of 0.08 and 0.2 mu mol L-1, respectively. The practical feasibility of the developed method was demonstrated by quantification of harmaline in the extracts of natural food products such as Syrian rue (Peganum harmala, also known as esphant, harmal, yiizerlik) seeds, locally used as condiment and medicine in Turkey and the Near and Middle East, and the South American shamanic drink component Ayahuasca liane (Banisteriopsis caapi) with results in good agreement with those obtained by high-performance liquid chromatography as a reference method. The proposed sensor represents an effective electrochemical tool and inexpensive alternative for quality control analysis of food products containing harmaline.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Voltammetric determination of harmaline in natural food products using boron-doped diamond electrode",
volume = "744",
pages = "37-44",
doi = "10.1016/j.jelechem.2015.03.004"
}

Šovrc, Ľ., Cinková, K., Samphao, A., Stanković, D., Mehmeti, E.,& Kalcher, K.. (2015). Voltammetric determination of harmaline in natural food products using boron-doped diamond electrode. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 744, 37-44.
https://doi.org/10.1016/j.jelechem.2015.03.004

Šovrc Ľ, Cinková K, Samphao A, Stanković D, Mehmeti E, Kalcher K. Voltammetric determination of harmaline in natural food products using boron-doped diamond electrode. in Journal of Electroanalytical Chemistry. 2015;744:37-44.
doi:10.1016/j.jelechem.2015.03.004 .

Šovrc, Ľubomír, Cinková, Kristína, Samphao, Anchalee, Stanković, Dalibor, Mehmeti, Eda, Kalcher, Kurt, "Voltammetric determination of harmaline in natural food products using boron-doped diamond electrode" in Journal of Electroanalytical Chemistry, 744 (2015):37-44,
https://doi.org/10.1016/j.jelechem.2015.03.004 . .

TY  - JOUR
AU  - Samphao, Anchalee
AU  - Kunpatee, Kanjana
AU  - Prayoonpokarach, Sanchai
AU  - Wittayakun, Jatuporn
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Zagar, Kristina
AU  - Ceh, Miran
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2034
AB  - An ethanol biosensor based on alcohol dehydrogenase (ADH) attached to Au seeds decorated on magnetic nanoparticles (Fe3O4"Au NPs) is presented. ADH was immobilized on Fe3O4"Au NPs, which were subsequently fixed by a magnet on a carbon paste electrode modified with 5% (m:m) MnO2. Optimum conditions for the amperometric determination of ethanol with the biosensor were as follows: working potential +0.1 V (vs. Ag/AgCl); supporting electrolyte: 0.1 M phosphate buffer solution at pH 6.8 containing 0.25 mM of the coenzyme (NAD+); working electrode: carbon paste with magnetically attached Fe3O4"Au NPs (0.012 mg . cm(-2) electrode area) with immobilized alcohol dehydrogenase (120 units per cm(2) of electrode area). Linearity between signal and concentration was found for the range from 0.1 to 2.0 M ethanol (r(2) = 0.995) with a detection limit of 0.07 M, a sensitivity of 0.02 mu A . mM(-1) . cm(-2), a reproducibility of 4.0% RSD, and a repeatability of 2.7% RSD. The results for the determination of ethanol in alcoholic beverages showed good agreement with gas chromatography (GC) with recovery of 96.0-108.8%.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles
VL  - 27
IS  - 12
SP  - 2829
EP  - 2837
DO  - 10.1002/elan.201500315
ER  - 

@article{
author = "Samphao, Anchalee and Kunpatee, Kanjana and Prayoonpokarach, Sanchai and Wittayakun, Jatuporn and Šovrc, Ľubomír and Stanković, Dalibor and Zagar, Kristina and Ceh, Miran and Kalcher, Kurt",
year = "2015",
abstract = "An ethanol biosensor based on alcohol dehydrogenase (ADH) attached to Au seeds decorated on magnetic nanoparticles (Fe3O4"Au NPs) is presented. ADH was immobilized on Fe3O4"Au NPs, which were subsequently fixed by a magnet on a carbon paste electrode modified with 5% (m:m) MnO2. Optimum conditions for the amperometric determination of ethanol with the biosensor were as follows: working potential +0.1 V (vs. Ag/AgCl); supporting electrolyte: 0.1 M phosphate buffer solution at pH 6.8 containing 0.25 mM of the coenzyme (NAD+); working electrode: carbon paste with magnetically attached Fe3O4"Au NPs (0.012 mg . cm(-2) electrode area) with immobilized alcohol dehydrogenase (120 units per cm(2) of electrode area). Linearity between signal and concentration was found for the range from 0.1 to 2.0 M ethanol (r(2) = 0.995) with a detection limit of 0.07 M, a sensitivity of 0.02 mu A . mM(-1) . cm(-2), a reproducibility of 4.0% RSD, and a repeatability of 2.7% RSD. The results for the determination of ethanol in alcoholic beverages showed good agreement with gas chromatography (GC) with recovery of 96.0-108.8%.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles",
volume = "27",
number = "12",
pages = "2829-2837",
doi = "10.1002/elan.201500315"
}

Samphao, A., Kunpatee, K., Prayoonpokarach, S., Wittayakun, J., Šovrc, Ľ., Stanković, D., Zagar, K., Ceh, M.,& Kalcher, K.. (2015). An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. in Electroanalysis
Wiley-V C H Verlag Gmbh, Weinheim., 27(12), 2829-2837.
https://doi.org/10.1002/elan.201500315

Samphao A, Kunpatee K, Prayoonpokarach S, Wittayakun J, Šovrc Ľ, Stanković D, Zagar K, Ceh M, Kalcher K. An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. in Electroanalysis. 2015;27(12):2829-2837.
doi:10.1002/elan.201500315 .

Samphao, Anchalee, Kunpatee, Kanjana, Prayoonpokarach, Sanchai, Wittayakun, Jatuporn, Šovrc, Ľubomír, Stanković, Dalibor, Zagar, Kristina, Ceh, Miran, Kalcher, Kurt, "An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles" in Electroanalysis, 27, no. 12 (2015):2829-2837,
https://doi.org/10.1002/elan.201500315 . .

TY  - DATA
AU  - Samphao, Anchalee
AU  - Kunpatee, Kanjana
AU  - Prayoonpokarach, Sanchai
AU  - Wittayakun, Jatuporn
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Zagar, Kristina
AU  - Ceh, Miran
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3331
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - Supplementary data for the article: Samphao, A.; Kunpatee, K.; Prayoonpokarach, S.; Wittayakun, J.; Švorc, L.; Stankovic, D. M.; Zagar, K.; Ceh, M.; Kalcher, K. An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. Electroanalysis 2015, 27 (12), 2829–2837. https://doi.org/10.1002/elan.201500315
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3331
ER  - 

@misc{
author = "Samphao, Anchalee and Kunpatee, Kanjana and Prayoonpokarach, Sanchai and Wittayakun, Jatuporn and Šovrc, Ľubomír and Stanković, Dalibor and Zagar, Kristina and Ceh, Miran and Kalcher, Kurt",
year = "2015",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "Supplementary data for the article: Samphao, A.; Kunpatee, K.; Prayoonpokarach, S.; Wittayakun, J.; Švorc, L.; Stankovic, D. M.; Zagar, K.; Ceh, M.; Kalcher, K. An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. Electroanalysis 2015, 27 (12), 2829–2837. https://doi.org/10.1002/elan.201500315",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3331"
}

Samphao, A., Kunpatee, K., Prayoonpokarach, S., Wittayakun, J., Šovrc, Ľ., Stanković, D., Zagar, K., Ceh, M.,& Kalcher, K.. (2015). Supplementary data for the article: Samphao, A.; Kunpatee, K.; Prayoonpokarach, S.; Wittayakun, J.; Švorc, L.; Stankovic, D. M.; Zagar, K.; Ceh, M.; Kalcher, K. An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. Electroanalysis 2015, 27 (12), 2829–2837. https://doi.org/10.1002/elan.201500315. in Electroanalysis
Wiley-V C H Verlag Gmbh, Weinheim..
https://hdl.handle.net/21.15107/rcub_cherry_3331

Samphao A, Kunpatee K, Prayoonpokarach S, Wittayakun J, Šovrc Ľ, Stanković D, Zagar K, Ceh M, Kalcher K. Supplementary data for the article: Samphao, A.; Kunpatee, K.; Prayoonpokarach, S.; Wittayakun, J.; Švorc, L.; Stankovic, D. M.; Zagar, K.; Ceh, M.; Kalcher, K. An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. Electroanalysis 2015, 27 (12), 2829–2837. https://doi.org/10.1002/elan.201500315. in Electroanalysis. 2015;.
https://hdl.handle.net/21.15107/rcub_cherry_3331 .

Samphao, Anchalee, Kunpatee, Kanjana, Prayoonpokarach, Sanchai, Wittayakun, Jatuporn, Šovrc, Ľubomír, Stanković, Dalibor, Zagar, Kristina, Ceh, Miran, Kalcher, Kurt, "Supplementary data for the article: Samphao, A.; Kunpatee, K.; Prayoonpokarach, S.; Wittayakun, J.; Švorc, L.; Stankovic, D. M.; Zagar, K.; Ceh, M.; Kalcher, K. An Ethanol Biosensor Based on Simple Immobilization of Alcohol Dehydrogenase on Fe3O4"Au Nanoparticles. Electroanalysis 2015, 27 (12), 2829–2837. https://doi.org/10.1002/elan.201500315" in Electroanalysis (2015),
https://hdl.handle.net/21.15107/rcub_cherry_3331 .

TY  - DATA
AU  - Stanković, Dalibor
AU  - Mehmeti, Eda
AU  - Šovrc, Ľubomír
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3419
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - Supplementary data for article: Stanković, D. M.; Mehmeti, E.; Svorc, L.; Kalcher, K. Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. Electroanalysis 2015, 27 (7), 1587–1593. https://doi.org/10.1002/elan.201400729
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3419
ER  - 

@misc{
author = "Stanković, Dalibor and Mehmeti, Eda and Šovrc, Ľubomír and Kalcher, Kurt",
year = "2015",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "Supplementary data for article: Stanković, D. M.; Mehmeti, E.; Svorc, L.; Kalcher, K. Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. Electroanalysis 2015, 27 (7), 1587–1593. https://doi.org/10.1002/elan.201400729",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3419"
}

Stanković, D., Mehmeti, E., Šovrc, Ľ.,& Kalcher, K.. (2015). Supplementary data for article: Stanković, D. M.; Mehmeti, E.; Svorc, L.; Kalcher, K. Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. Electroanalysis 2015, 27 (7), 1587–1593. https://doi.org/10.1002/elan.201400729. in Electroanalysis
Wiley-V C H Verlag Gmbh, Weinheim..
https://hdl.handle.net/21.15107/rcub_cherry_3419

Stanković D, Mehmeti E, Šovrc Ľ, Kalcher K. Supplementary data for article: Stanković, D. M.; Mehmeti, E.; Svorc, L.; Kalcher, K. Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. Electroanalysis 2015, 27 (7), 1587–1593. https://doi.org/10.1002/elan.201400729. in Electroanalysis. 2015;.
https://hdl.handle.net/21.15107/rcub_cherry_3419 .

Stanković, Dalibor, Mehmeti, Eda, Šovrc, Ľubomír, Kalcher, Kurt, "Supplementary data for article: Stanković, D. M.; Mehmeti, E.; Svorc, L.; Kalcher, K. Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. Electroanalysis 2015, 27 (7), 1587–1593. https://doi.org/10.1002/elan.201400729" in Electroanalysis (2015),
https://hdl.handle.net/21.15107/rcub_cherry_3419 .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Mehmeti, Eda
AU  - Šovrc, Ľubomír
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1731
AB  - We report a novel, simple, rapid and sensitive electrochemical method for the determination of sulcotrione, a member of the relatively new class of triketone herbicides, using differential pulse voltammetry on a glassy carbon electrode. Its electrochemical behavior including influences of electrolyte composition, pH and scan rate was studied to select optimal experimental parameters for its determination. In Britton-Robinson buffer at pH 3 sulcotrione provided a well-defined reduction peak at -0.84 V (vs. Ag/AgCl electrode), with good repeatability (relative standard deviation of 2.3% for 8 measurements at 10 mu M concentration level). With optimized parameters differential pulse voltammetry rendered two linear concentration ranges from 0.2 to 2 mu M and from 2 to 50 mM with a detection limit of 0.05 mu M. The proposed procedure was successfully applied to the determination of sulcotrione in spiked river water samples with satisfactory recoveries (93-109%). The developed method may represent a simple, rapid and sensitive alternative to highly toxic mercury electrodes and chromatographic methods.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode
VL  - 27
IS  - 7
SP  - 1587
EP  - 1593
DO  - 10.1002/elan.201400729
ER  - 

@article{
author = "Stanković, Dalibor and Mehmeti, Eda and Šovrc, Ľubomír and Kalcher, Kurt",
year = "2015",
abstract = "We report a novel, simple, rapid and sensitive electrochemical method for the determination of sulcotrione, a member of the relatively new class of triketone herbicides, using differential pulse voltammetry on a glassy carbon electrode. Its electrochemical behavior including influences of electrolyte composition, pH and scan rate was studied to select optimal experimental parameters for its determination. In Britton-Robinson buffer at pH 3 sulcotrione provided a well-defined reduction peak at -0.84 V (vs. Ag/AgCl electrode), with good repeatability (relative standard deviation of 2.3% for 8 measurements at 10 mu M concentration level). With optimized parameters differential pulse voltammetry rendered two linear concentration ranges from 0.2 to 2 mu M and from 2 to 50 mM with a detection limit of 0.05 mu M. The proposed procedure was successfully applied to the determination of sulcotrione in spiked river water samples with satisfactory recoveries (93-109%). The developed method may represent a simple, rapid and sensitive alternative to highly toxic mercury electrodes and chromatographic methods.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode",
volume = "27",
number = "7",
pages = "1587-1593",
doi = "10.1002/elan.201400729"
}

Stanković, D., Mehmeti, E., Šovrc, Ľ.,& Kalcher, K.. (2015). Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. in Electroanalysis
Wiley-V C H Verlag Gmbh, Weinheim., 27(7), 1587-1593.
https://doi.org/10.1002/elan.201400729

Stanković D, Mehmeti E, Šovrc Ľ, Kalcher K. Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode. in Electroanalysis. 2015;27(7):1587-1593.
doi:10.1002/elan.201400729 .

Stanković, Dalibor, Mehmeti, Eda, Šovrc, Ľubomír, Kalcher, Kurt, "Simple, Rapid and Sensitive Electrochemical Method for the Determination of the Triketone Herbicide Sulcotrione in River Water Using a Glassy Carbon Electrode" in Electroanalysis, 27, no. 7 (2015):1587-1593,
https://doi.org/10.1002/elan.201400729 . .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Mehmeti, Eda
AU  - Šovrc, Ľubomír
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1884
AB  - In this paper a new electrochemical method for determination of the beta-carboline alkaloids, harmalol and harmine, using differential pulse voltammetry is presented. Experimental parameters such as pH, scan rate, pulse amplitude and pulse time were optimized to characterize their electrochemical behavior and to find best analytical conditions. Thus, in the presence of ascorbic acid, uric acid, dopamine, the developed method exhibits excellent performance for the determination of harmalol and harmine for a linear concentration range between 1-50 mu M and 1-75 mu M with a detection limit of 0.6 mu M and 0.2 mu M, respectively. The proposed method was successfully applied for the determination of these alkaloids in a sample of an Ayahuasca liana (Banisteriopsis caapi) and in model human urine samples with good recoveries.
PB  - Elsevier Science Bv, Amsterdam
T2  - Microchemical Journal
T1  - New electrochemical method for the determination of beta-carboline alkaloids, harmalol and harmine, in human urine samples and in Banisteriopsis caapi
VL  - 118
SP  - 95
EP  - 100
DO  - 10.1016/j.microc.2014.08.007
ER  - 

@article{
author = "Stanković, Dalibor and Mehmeti, Eda and Šovrc, Ľubomír and Kalcher, Kurt",
year = "2015",
abstract = "In this paper a new electrochemical method for determination of the beta-carboline alkaloids, harmalol and harmine, using differential pulse voltammetry is presented. Experimental parameters such as pH, scan rate, pulse amplitude and pulse time were optimized to characterize their electrochemical behavior and to find best analytical conditions. Thus, in the presence of ascorbic acid, uric acid, dopamine, the developed method exhibits excellent performance for the determination of harmalol and harmine for a linear concentration range between 1-50 mu M and 1-75 mu M with a detection limit of 0.6 mu M and 0.2 mu M, respectively. The proposed method was successfully applied for the determination of these alkaloids in a sample of an Ayahuasca liana (Banisteriopsis caapi) and in model human urine samples with good recoveries.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Microchemical Journal",
title = "New electrochemical method for the determination of beta-carboline alkaloids, harmalol and harmine, in human urine samples and in Banisteriopsis caapi",
volume = "118",
pages = "95-100",
doi = "10.1016/j.microc.2014.08.007"
}

Stanković, D., Mehmeti, E., Šovrc, Ľ.,& Kalcher, K.. (2015). New electrochemical method for the determination of beta-carboline alkaloids, harmalol and harmine, in human urine samples and in Banisteriopsis caapi. in Microchemical Journal
Elsevier Science Bv, Amsterdam., 118, 95-100.
https://doi.org/10.1016/j.microc.2014.08.007

Stanković D, Mehmeti E, Šovrc Ľ, Kalcher K. New electrochemical method for the determination of beta-carboline alkaloids, harmalol and harmine, in human urine samples and in Banisteriopsis caapi. in Microchemical Journal. 2015;118:95-100.
doi:10.1016/j.microc.2014.08.007 .

Stanković, Dalibor, Mehmeti, Eda, Šovrc, Ľubomír, Kalcher, Kurt, "New electrochemical method for the determination of beta-carboline alkaloids, harmalol and harmine, in human urine samples and in Banisteriopsis caapi" in Microchemical Journal, 118 (2015):95-100,
https://doi.org/10.1016/j.microc.2014.08.007 . .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Mehmeti, Eda
AU  - Šovrc, Ľubomír
AU  - Kalcher, Kurt
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1642
AB  - In the present paper a glassy carbon electrode was successfully applied for the sensitive and selective determination of the indole alkaloid reserpine by differential pulse voltammetry (DPV). The electrochemical behavior of reserpine was investigated using cyclic voltammetry and best conditions for its quantification were examined by differential pulse voltammetry. Cyclic voltammetry has shown that the oxidation process is irreversible over the pH range 1 - 12 and that the electrode process is mainly diffusion controlled. The proposed procedure has wide linear concentration range for determination of reserpine by DPV from 2 mu M to 75 mu M with a detection limit 0.6 mu M. The sensor in combination with optimized electrochemical parameters was successfully applied for the determination of reserpine in model human urine with good recovery.
PB  - Esg, Belgrade
T2  - International Journal of Electrochemical Science
T1  - Sensitive Determination of the Indole Alkaloid Reserpine Using a Glassy Carbon Based Electrochemical Sensor
VL  - 10
IS  - 2
SP  - 1469
EP  - 1477
UR  - https://hdl.handle.net/21.15107/rcub_cherry_1642
ER  - 

@article{
author = "Stanković, Dalibor and Mehmeti, Eda and Šovrc, Ľubomír and Kalcher, Kurt",
year = "2015",
abstract = "In the present paper a glassy carbon electrode was successfully applied for the sensitive and selective determination of the indole alkaloid reserpine by differential pulse voltammetry (DPV). The electrochemical behavior of reserpine was investigated using cyclic voltammetry and best conditions for its quantification were examined by differential pulse voltammetry. Cyclic voltammetry has shown that the oxidation process is irreversible over the pH range 1 - 12 and that the electrode process is mainly diffusion controlled. The proposed procedure has wide linear concentration range for determination of reserpine by DPV from 2 mu M to 75 mu M with a detection limit 0.6 mu M. The sensor in combination with optimized electrochemical parameters was successfully applied for the determination of reserpine in model human urine with good recovery.",
publisher = "Esg, Belgrade",
journal = "International Journal of Electrochemical Science",
title = "Sensitive Determination of the Indole Alkaloid Reserpine Using a Glassy Carbon Based Electrochemical Sensor",
volume = "10",
number = "2",
pages = "1469-1477",
url = "https://hdl.handle.net/21.15107/rcub_cherry_1642"
}

Stanković, D., Mehmeti, E., Šovrc, Ľ.,& Kalcher, K.. (2015). Sensitive Determination of the Indole Alkaloid Reserpine Using a Glassy Carbon Based Electrochemical Sensor. in International Journal of Electrochemical Science
Esg, Belgrade., 10(2), 1469-1477.
https://hdl.handle.net/21.15107/rcub_cherry_1642

Stanković D, Mehmeti E, Šovrc Ľ, Kalcher K. Sensitive Determination of the Indole Alkaloid Reserpine Using a Glassy Carbon Based Electrochemical Sensor. in International Journal of Electrochemical Science. 2015;10(2):1469-1477.
https://hdl.handle.net/21.15107/rcub_cherry_1642 .

Stanković, Dalibor, Mehmeti, Eda, Šovrc, Ľubomír, Kalcher, Kurt, "Sensitive Determination of the Indole Alkaloid Reserpine Using a Glassy Carbon Based Electrochemical Sensor" in International Journal of Electrochemical Science, 10, no. 2 (2015):1469-1477,
https://hdl.handle.net/21.15107/rcub_cherry_1642 .