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 .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Mehmeti, Eda
AU  - Kalcher, Kurt
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1794
AB  - For the first time, a simple and sensitive analytical method for the direct determination of yohimbine is presented using differential pulse voltammetry with a boron-doped diamond electrode. Two irreversible oxidation peaks, a distinct one at +0.80 and a second poorly-defined one at +1.65 V, were observed when cyclic voltammetry was carried out in Britton-Robinson buffer solution at pH 7 (vs. Ag/AgCl). With optimized differential pulse voltammetric parameters (pulse amplitude 100 mV, pulse time 25 ms, step potential 5 mV and scan rate 10 mV s(-1)), the current response of yohimbine at +0.80 V was linearly proportional to the concentration in the range from 0.25 to 90.9 mu mol L-1 with a low detection limit of 0.13 mu mol L-1 (0.046 mg L-1) and a good repeatability (relative standard deviation of 2.5% at 18.4 mu mol L-1 for n = 6). The practical applicability of the developed method was demonstrated by the assessment of the total content of yohimbine in extracts of the primary bark of natural aphrodisiacs such as Pausinystalia yohimbe and Rauvolfia serpentina with recoveries in the range of 92-97%. The proposed electrochemical procedure represents an inexpensive and effective analytical alternative for the quality control analysis of products containing yohimbine and other biologically and structurally related alkaloids used as natural dietary supplements.
PB  - Royal Soc Chemistry, Cambridge
T2  - Analytical Methods
T1  - Sensitive electrochemical determination of yohimbine in primary bark of natural aphrodisiacs using boron-doped diamond electrode
VL  - 6
IS  - 13
SP  - 4853
EP  - 4859
DO  - 10.1039/c4ay00704b
ER  - 

@article{
author = "Šovrc, Ľubomír and Stanković, Dalibor and Mehmeti, Eda and Kalcher, Kurt",
year = "2014",
abstract = "For the first time, a simple and sensitive analytical method for the direct determination of yohimbine is presented using differential pulse voltammetry with a boron-doped diamond electrode. Two irreversible oxidation peaks, a distinct one at +0.80 and a second poorly-defined one at +1.65 V, were observed when cyclic voltammetry was carried out in Britton-Robinson buffer solution at pH 7 (vs. Ag/AgCl). With optimized differential pulse voltammetric parameters (pulse amplitude 100 mV, pulse time 25 ms, step potential 5 mV and scan rate 10 mV s(-1)), the current response of yohimbine at +0.80 V was linearly proportional to the concentration in the range from 0.25 to 90.9 mu mol L-1 with a low detection limit of 0.13 mu mol L-1 (0.046 mg L-1) and a good repeatability (relative standard deviation of 2.5% at 18.4 mu mol L-1 for n = 6). The practical applicability of the developed method was demonstrated by the assessment of the total content of yohimbine in extracts of the primary bark of natural aphrodisiacs such as Pausinystalia yohimbe and Rauvolfia serpentina with recoveries in the range of 92-97%. The proposed electrochemical procedure represents an inexpensive and effective analytical alternative for the quality control analysis of products containing yohimbine and other biologically and structurally related alkaloids used as natural dietary supplements.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Analytical Methods",
title = "Sensitive electrochemical determination of yohimbine in primary bark of natural aphrodisiacs using boron-doped diamond electrode",
volume = "6",
number = "13",
pages = "4853-4859",
doi = "10.1039/c4ay00704b"
}

Šovrc, Ľ., Stanković, D., Mehmeti, E.,& Kalcher, K.. (2014). Sensitive electrochemical determination of yohimbine in primary bark of natural aphrodisiacs using boron-doped diamond electrode. in Analytical Methods
Royal Soc Chemistry, Cambridge., 6(13), 4853-4859.
https://doi.org/10.1039/c4ay00704b

Šovrc Ľ, Stanković D, Mehmeti E, Kalcher K. Sensitive electrochemical determination of yohimbine in primary bark of natural aphrodisiacs using boron-doped diamond electrode. in Analytical Methods. 2014;6(13):4853-4859.
doi:10.1039/c4ay00704b .

Šovrc, Ľubomír, Stanković, Dalibor, Mehmeti, Eda, Kalcher, Kurt, "Sensitive electrochemical determination of yohimbine in primary bark of natural aphrodisiacs using boron-doped diamond electrode" in Analytical Methods, 6, no. 13 (2014):4853-4859,
https://doi.org/10.1039/c4ay00704b . .

TY  - JOUR
AU  - Šovrc, Ľubomír
AU  - Stanković, Dalibor
AU  - Kalcher, Kurt
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1514
AB  - A sensitive, selective and reliable electrochemical method for the determination of nicotine using differential pulse voltammetry on a bare boron-doped diamond electrode has been developed. Nicotine yielded a single oxidation peak at a highly positive potential of +1.45 V (vs. Ag/AgCl/3 M KCl) in Britton-Robinson buffer solution at pH 8. The influence of supporting electrolyte, pH and scan rate on the current response of NIC was investigated. At optimized experimental conditions, a linear relation between peak current and concentration of nicotine was found for the range from 0.5 to 200 mu M (0.08-32.9 mg L-1) with a detection limit of 0.3 mu M (0.05 mg L-1) and a good repeatability (relative standard deviation of 2.1% at 25 mu M concentration level, n = 10) was achieved without any electrode surface modification. The practical usefulness of the developed procedure was successfully demonstrated with the determination of nicotine in tobacco products and anti-smoking pharmaceuticals with results similar to those obtained by a high-performance liquid chromatography and to the contents declared by the manufacturer, respectively. Prior to analysis, the sample pretreatment includes only sonication and/or simple liquid-liquid extraction. The proposed sensor represents an effective electrochemical tool and a promising alternative for quality control analysis of products in tobacco and pharmaceutical industry. (C) 2013 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Sa, Lausanne
T2  - Diamond and Related Materials
T1  - Boron-doped diamond electrochemical sensor for sensitive determination of nicotine in tobacco products and anti-smoking pharmaceuticals
VL  - 42
SP  - 1
EP  - 7
DO  - 10.1016/j.diamond.2013.11.012
ER  - 

@article{
author = "Šovrc, Ľubomír and Stanković, Dalibor and Kalcher, Kurt",
year = "2014",
abstract = "A sensitive, selective and reliable electrochemical method for the determination of nicotine using differential pulse voltammetry on a bare boron-doped diamond electrode has been developed. Nicotine yielded a single oxidation peak at a highly positive potential of +1.45 V (vs. Ag/AgCl/3 M KCl) in Britton-Robinson buffer solution at pH 8. The influence of supporting electrolyte, pH and scan rate on the current response of NIC was investigated. At optimized experimental conditions, a linear relation between peak current and concentration of nicotine was found for the range from 0.5 to 200 mu M (0.08-32.9 mg L-1) with a detection limit of 0.3 mu M (0.05 mg L-1) and a good repeatability (relative standard deviation of 2.1% at 25 mu M concentration level, n = 10) was achieved without any electrode surface modification. The practical usefulness of the developed procedure was successfully demonstrated with the determination of nicotine in tobacco products and anti-smoking pharmaceuticals with results similar to those obtained by a high-performance liquid chromatography and to the contents declared by the manufacturer, respectively. Prior to analysis, the sample pretreatment includes only sonication and/or simple liquid-liquid extraction. The proposed sensor represents an effective electrochemical tool and a promising alternative for quality control analysis of products in tobacco and pharmaceutical industry. (C) 2013 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Diamond and Related Materials",
title = "Boron-doped diamond electrochemical sensor for sensitive determination of nicotine in tobacco products and anti-smoking pharmaceuticals",
volume = "42",
pages = "1-7",
doi = "10.1016/j.diamond.2013.11.012"
}

Šovrc, Ľ., Stanković, D.,& Kalcher, K.. (2014). Boron-doped diamond electrochemical sensor for sensitive determination of nicotine in tobacco products and anti-smoking pharmaceuticals. in Diamond and Related Materials
Elsevier Science Sa, Lausanne., 42, 1-7.
https://doi.org/10.1016/j.diamond.2013.11.012

Šovrc Ľ, Stanković D, Kalcher K. Boron-doped diamond electrochemical sensor for sensitive determination of nicotine in tobacco products and anti-smoking pharmaceuticals. in Diamond and Related Materials. 2014;42:1-7.
doi:10.1016/j.diamond.2013.11.012 .

Šovrc, Ľubomír, Stanković, Dalibor, Kalcher, Kurt, "Boron-doped diamond electrochemical sensor for sensitive determination of nicotine in tobacco products and anti-smoking pharmaceuticals" in Diamond and Related Materials, 42 (2014):1-7,
https://doi.org/10.1016/j.diamond.2013.11.012 . .