Preparation and characterization of 3‐[(1<i>H</i>‐1,2,4‐triazole‐3‐ylimino)methyl]naphtalene‐2‐ol film at the platinum surface for selective voltammetric determination of dopamine in the presence of uric acid and ascorbic acid

Tatli, Feyza; Uzun, Demet; Calam, Tuğba Tabanlıgil; Gündüzalp, Ayla Balaban; Hasdemır, Erdoğan

doi:10.1002/sia.6607

Cited by 9 publications

(5 citation statements)

References 68 publications

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“…The supporting electrolyte solution and its pH value are effective and significant on the oxidation peak current of VAN . The influences of supporting electrolyte and its pH value were examined on the anodic peak current of VAN on the ATT‐Au electrode surface by the DPV method (Figure A).…”

Section: Resultsmentioning

confidence: 99%

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Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Calam

Uzun

2019

Electroanalysis

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Electrochemical oxidation of vanillin (VAN) in the presence of caffeine (CAF) was studied on a gold (Au) electrode modified with 3‐amino‐1,2,4‐triazole‐5‐thiol (ATT) film by using differential pulse voltammetry (DPV) and cyclic voltammetry (CV) method. The formation of the ATT film on the Au electrode surface was characterized by the CV, fourier transform infrared spectroscopy (FTIR) and impedance spectroscopy (EIS) methods. A single irreversible oxidation peak of the VAN was obtained by using the CV method. The determination of VAN in the presence of CAF was carried out at pH 4 in Britton Robinson buffer (BR) by the DPV method. Under the optimal conditions, the oxidation peak current was proportional to the concentration of VAN in the range of 1.1 μM to 76.4 μM in the presence of CAF with the correlation coefficient of 0.997 and the detection limit of 0.19 μM (S/N=3). The selective determination of VAN in a commercial coffee sample was carried out with satisfactory results on the ATT‐Au modified electrode.

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Section: Resultsmentioning

confidence: 99%

“…Reproducibility, stability and repeatability are three significant characteristics for the modified electrodes . The reproducibility, repeatability, and interferences of the ATT‐Au modified electrode were evaluated by the DPV method.…”

Section: Resultsmentioning

confidence: 99%

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Calam

Uzun

2019

Electroanalysis

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“…Electrochemical probes were used in the characterization process of modified electrode surfaces [20,21]. Voltammograms of bare and modified electrodes were taken using the cyclic voltammetry technique in 1.0 mmol dm -3 ferrocene solution as a redox probe in CH3CN containing 0.1 mol dm -3 of TBATFB.…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

Determination of ascorbic acid at solid electrodes modified with L-cysteine

İzi

Yazicigil

2023

J. Electrochem. Sci. Eng.

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Gold and glassy carbon electrode surfaces were modified with L-cysteine, and the electrochemical behavior of ascorbic acid (AA) was investigated on these new surfaces. To improve the efficiency of electrodes, the electrode surfaces were modified and optimum conditions for AA determination were established. Electrochemical experiments were performed at different potential ranges, the concentration of AA, scan rates, number of polymerization cycles and pH values. Using cyclic voltammetry (CV) technique, optimum conditions were determined as the potential scanning range of 0.2 to 1.5 V vs. Ag/AgCl in 0.1 M phosphate buffer solution (pH 7.02) for the L-cysteine/Au electrode, and -1.95 to 1.9 V vs. Ag/AgCl in 0.1 M phosphate buffer solution (pH 2.7) for the L-cysteine/GC electrode. For the characterization of both modified electrode surfaces, a series of physicochemical techniques was also applied. The usability and selectivity of these two proposed modified electrodes for the determination of AA were investigated using square wave voltammetry (SWV) in the presence of possible interferents, i.e., glycine, L-glutamic acid and uric acid.

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“…The oxidation peak current of 4NP is effected from the supporting electrolyte solution (SE) and its pH value [45,46]. The effect of SE and its pH value on the anodic peak current of 4NP on the 35DT-Au electrode surface was examined by using DPV method (Figure 5A).…”

Section: Influence Of Supporting Electrolyte and Ph On The Oxidation ...mentioning

confidence: 99%

Electrochemical Oxidative Determination and Electrochemical Behavior of 4‐Nitrophenol Based on an Au Electrode Modified with Electro‐polymerized 3,5‐Diamino‐1,2,4‐triazole Film

Calam

2019

Electroanalysis

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A simple and fast electrochemical method was described and evaluated to determine the hazardous compound, 4‐nitrophenol (4NP). In this work, concentration of 4NP was determined by differential wave voltammetry (DPV). A gold electrode (Au) was modified with 3,5‐diamino‐1,2,4‐triazole (35DT). The modified electrode (35DT‐Au) was characterized by using electrochemical impedance spectroscopy (EIS), fouirer transform infrared spektrofotometre (FTIR), cyclic voltammetry (CV) and DPV. The modified electrode showed more sensitivity towards 4NP compared to unmodified one. A wide linear concentration range from 0.24 to 130.6 μM was obtained for 4NP with a detection limit of 0.09 μM. In the reproducibility and repeatability studies, the relative standard deviation (RSD%) values of the method were obtained as 3.72 % and 2.56 %, respectively, which are acceptable values. This proposed method was successfully used for the analysis of 4NP in lake and tap water samples. Simplicity, sensitivity, selectivity and high efficiency of the proposed method can be used in routine analysis of trace amounts of 4NP in polluted waters.

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Preparation and characterization of 3‐[(1H‐1,2,4‐triazole‐3‐ylimino)methyl]naphtalene‐2‐ol film at the platinum surface for selective voltammetric determination of dopamine in the presence of uric acid and ascorbic acid

Cited by 9 publications

References 68 publications

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Determination of ascorbic acid at solid electrodes modified with L-cysteine

Electrochemical Oxidative Determination and Electrochemical Behavior of 4‐Nitrophenol Based on an Au Electrode Modified with Electro‐polymerized 3,5‐Diamino‐1,2,4‐triazole Film

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