Determination of Methotrexate at a Silver Solid Amalgam Electrode by Differential Pulse Voltammetry

Determination of 6-nitrobenzimidazole by differential pulse voltammetry at a hanging mercury drop electrode, a polished silver solid amalgam electrode and a mercury meniscus modified silver solid amalgam electrode was studied in the presence of the surfactants Triton X-100, cetyltrimethylammonium bromide and sodium dodecyl sulfate. It was found that only cetyltrimethylammonium bromide at polished silver solid amalgam electrode increases the voltammetric signal. This fact was used for the determination of 6-nitrobenzimidazole in the concentration range from 1 × 10–7 to 1 × 10–4 mol l–1 by differential pulse voltammetry at polished silver solid amalgam electrode in the presence of cetyltrimethylammonium bromide (concentration 1 × 10–4 mol l–1).

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Voltammetric determination of Nordiazepam at meniscus modified silver solid amalgam electrode

Acta Chimica Slovaca ◽

10.2478/acs-2014-0018 ◽

2014 ◽

Vol 7 (2) ◽

pp. 105-108 ◽

Cited By ~ 1

Author(s):

Petr Samiec ◽

Zuzana Navrátilová

Keyword(s):

Ph Value ◽

Ph Effect ◽

Differential Pulse ◽

Current Response ◽

Limit Of Quantification ◽

Silver Solid Amalgam Electrode ◽

Amalgam Electrode ◽

Optimum Ph ◽

Pulse Voltammetry

Abstract New electrochemical method for determination of Nordiazepam (NDZ) at meniscus modified silver solid amalgam electrode (m-AgSAE) was developed utilizing differential pulse voltammetry (DPV). The pH effect on the current response of NDZ was studied in the mixture of Britton-Robinson buffer (BR) and methanol (9:1) with optimum pH value of 10. The calibration dependences were examined under the optimal conditions and linearity in the range from 2 × 10−6 to 1 × 10−4 mol L−1 with limit of quantification of 1.7 × 10−6 mol L−1 were accomplished.

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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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