Poly(L-Cysteine) Modified Pencil Graphite Electrode for Determination of Sunset Yellow in Food and Beverage Samples by Differential Pulse Voltammetry

Dopamine is very important neurotransmitter and the rapid and effective methods for its determination are of great importance in fundamental medical research. A rapid voltammetric assay for dopamine (DA) detection in presence of ascorbic acid (AA) based on an electrochemically pretreated pencil graphite electrode has been investigated. Differential pulse voltammetry results showed two well-distinguished oxidation peaks for DA and AA at 0.369 V and 0.142 V, respectively, and the method was applied for DA determination without previous separation. The obtained detection limit for DA was 5.17 � 10-8 M. The method has been successfully applied for determination of DA in a pharmaceutical sample.

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Differential pulse voltammetric determination of an immunosuppressive drug teriflunomide on an edge plane pyrolytic graphite electrode

RSC Advances ◽

10.1039/c7ra00407a ◽

2017 ◽

Vol 7 (42) ◽

pp. 26028-26036 ◽

Cited By ~ 10

Author(s):

Kinga Kaczmarska ◽

Mariola Brycht ◽

Andrzej Leniart ◽

Sławomira Skrzypek

Keyword(s):

Differential Pulse Voltammetry ◽

Graphite Electrode ◽

Pyrolytic Graphite ◽

Differential Pulse ◽

Immunosuppressive Drug ◽

Selective Determination ◽

Pulse Voltammetry ◽

Pyrolytic Graphite Electrode ◽

First Time

In the present work, sensitive and selective determination of teriflunomide (Trf) on an edge plane pyrolytic graphite electrode (EPPGE) using differential pulse voltammetry (DPV) is presented for the first time.

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Polarographic and voltammetric determination of 6-mercaptopurine and 6-thioguanine

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19862466 ◽

1986 ◽

Vol 51 (11) ◽

pp. 2466-2472 ◽

Cited By ~ 9

Author(s):

Jiří Barek ◽

Antonín Berka ◽

Ludmila Dempírová ◽

Jiří Zima

Keyword(s):

Detection Limit ◽

Differential Pulse Voltammetry ◽

Detection Limits ◽

Differential Pulse ◽

Voltammetric Determination ◽

Differential Pulse Polarography ◽

Hanging Mercury Drop Electrode ◽

Pulse Polarography ◽

Pulse Voltammetry

Conditions were found for the determination of 6-mercaptopurine (I) and 6-thioguanine (II) by TAST polarography, differential pulse polarography and fast-scan differential pulse voltammetry at a hanging mercury drop electrode. The detection limits were 10-6, 8 . 10-8, and 6 . 10-8 mol l-1, respectively. A further lowering of the detection limit to 2 . 10-8 mol l-1 was attained by preliminary accumulation of the determined substances at the surface of a hanging mercury drop.

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The voltammetric determination of 4-nitrobiphenyl

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19910595 ◽

1991 ◽

Vol 56 (3) ◽

pp. 595-601 ◽

Cited By ~ 3

Author(s):

Jiří Barek ◽

Gulamustafa Malik ◽

Jiří Zima

Keyword(s):

Differential Pulse Voltammetry ◽

Differential Pulse ◽

Voltammetric Determination ◽

Hanging Mercury Drop Electrode ◽

Optimum Conditions ◽

Mercury Drop Electrode ◽

Working Electrode ◽

Pulse Voltammetry ◽

Unstirred Solution

Optimum conditions were found for the determination of 4-nitrobiphenyl by fast scan differential pulse voltammetry at a hanging mercury drop electrode in the concentration range 1 . 10-5 to 2 . 10-7 mol l-1. A further increase in sensitivity was attained by adsorptive accumulation of this substance on the surface of the working electrode, permitting determination in the concentration range (2 – 10) . 10-8 mol l-1 with one minute accumulation of the substance in unstirred solution or (2 – 10) . 10-9 mol l-1 with three-minute accumulation in stirred solution. Linear scan voltammetry can be used to determine 4-nitrobiphenyl in the concentration range (2 – 10) . 10-9 mol l-1 with five-minute accumulation in stirred solution, with the advantage of a smoother baseline and smaller interference from substances that yield only tensametric peaks.

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Ultrasensitive Electrochemical Determination of Phosphate in water by Hydrophilic TiO2 modified Glassy Carbon Electrodes

Analytical Methods ◽

10.1039/d0ay01854f ◽

2021 ◽

Author(s):

Yan Jin ◽

Tong QI ◽

Yuqing Ge ◽

Jin Chen ◽

Li juan Liang ◽

...

Keyword(s):

Differential Pulse Voltammetry ◽

Glassy Carbon ◽

Differential Pulse ◽

Electrochemical Determination ◽

Carbon Electrodes ◽

Glassy Carbon Electrodes ◽

Time Differential ◽

Pulse Voltammetry ◽

First Time

In this paper, ultrasensitive electrochemical determination of phosphate in water is achieved by hydrophilic TiO2 modified glassy carbon electrodes for the first time. Differential pulse voltammetry (DPV) method is proposed...

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