Determination of Cystein in biology solids by electrochemical methods with gold colloidal particles

Abstract

The electrochemical behavior of cysteine at a graphite electrodes modified with gold nanoparticles was studied by cyclic voltammetry. We compared the results of determination of cysteine in the particulate, graphite and glasgraphite electrodes modified with gold nanoparticles and single crystals of gold. Specific feature of the electrooxidation of cystein at a graphite electrodes modified with gold nanoparticles and at a graphite electrodes modified from solution HAuCl₄. It was found that graphite electrodes modified with gold nanoparticles have more electrocatalytic activity toward the oxidation of cysteine than single crystals of gold due to the increase in the number of atoms on the surface of the graphite electrode in comparison with single crystals of gold, which catalyze the oxidation process of cystein. The use of graphite electrode modified with gold nanoparticles reduces the detection limit for cystein under to 1. 10^-12 M. The method for determination of cysteine in biological samples.

Original language	English
Pages (from-to)	1591-1594
Number of pages	4
Journal	World Applied Sciences Journal
Volume	29
Issue number	12
DOIs	https://doi.org/10.5829/idosi.wasj.2014.29.12.13989
Publication status	Published - 2014

Keywords

Biological fluid
Cystein
Fraction of blood
Glassgraphite electrode
Gold nanoparticles
Gold single crystal
Graphite electrode
Particulate electrode
Voltammetry

ASJC Scopus subject areas

General

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Gorchakov, E. V., Perevezentseva, D. O., Fedota, N. V., Belyaev, V. A., & Bagamaev, B. M. (2014). Determination of Cystein in biology solids by electrochemical methods with gold colloidal particles. World Applied Sciences Journal, 29(12), 1591-1594. https://doi.org/10.5829/idosi.wasj.2014.29.12.13989

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title = "Determination of Cystein in biology solids by electrochemical methods with gold colloidal particles",

abstract = "The electrochemical behavior of cysteine at a graphite electrodes modified with gold nanoparticles was studied by cyclic voltammetry. We compared the results of determination of cysteine in the particulate, graphite and glasgraphite electrodes modified with gold nanoparticles and single crystals of gold. Specific feature of the electrooxidation of cystein at a graphite electrodes modified with gold nanoparticles and at a graphite electrodes modified from solution HAuCl4. It was found that graphite electrodes modified with gold nanoparticles have more electrocatalytic activity toward the oxidation of cysteine than single crystals of gold due to the increase in the number of atoms on the surface of the graphite electrode in comparison with single crystals of gold, which catalyze the oxidation process of cystein. The use of graphite electrode modified with gold nanoparticles reduces the detection limit for cystein under to 1. 10-12 M. The method for determination of cysteine in biological samples.",

keywords = "Biological fluid, Cystein, Fraction of blood, Glassgraphite electrode, Gold nanoparticles, Gold single crystal, Graphite electrode, Particulate electrode, Voltammetry",

author = "Gorchakov, {Eduard V.} and Perevezentseva, {Dariya O.} and Fedota, {Natalya V.} and Belyaev, {Valeriy A.} and Bagamaev, {Bagama M.}",

year = "2014",

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volume = "29",

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AU - Gorchakov, Eduard V.

AU - Perevezentseva, Dariya O.

AU - Fedota, Natalya V.

AU - Belyaev, Valeriy A.

AU - Bagamaev, Bagama M.

PY - 2014

Y1 - 2014

N2 - The electrochemical behavior of cysteine at a graphite electrodes modified with gold nanoparticles was studied by cyclic voltammetry. We compared the results of determination of cysteine in the particulate, graphite and glasgraphite electrodes modified with gold nanoparticles and single crystals of gold. Specific feature of the electrooxidation of cystein at a graphite electrodes modified with gold nanoparticles and at a graphite electrodes modified from solution HAuCl4. It was found that graphite electrodes modified with gold nanoparticles have more electrocatalytic activity toward the oxidation of cysteine than single crystals of gold due to the increase in the number of atoms on the surface of the graphite electrode in comparison with single crystals of gold, which catalyze the oxidation process of cystein. The use of graphite electrode modified with gold nanoparticles reduces the detection limit for cystein under to 1. 10-12 M. The method for determination of cysteine in biological samples.

AB - The electrochemical behavior of cysteine at a graphite electrodes modified with gold nanoparticles was studied by cyclic voltammetry. We compared the results of determination of cysteine in the particulate, graphite and glasgraphite electrodes modified with gold nanoparticles and single crystals of gold. Specific feature of the electrooxidation of cystein at a graphite electrodes modified with gold nanoparticles and at a graphite electrodes modified from solution HAuCl4. It was found that graphite electrodes modified with gold nanoparticles have more electrocatalytic activity toward the oxidation of cysteine than single crystals of gold due to the increase in the number of atoms on the surface of the graphite electrode in comparison with single crystals of gold, which catalyze the oxidation process of cystein. The use of graphite electrode modified with gold nanoparticles reduces the detection limit for cystein under to 1. 10-12 M. The method for determination of cysteine in biological samples.

KW - Biological fluid

KW - Cystein

KW - Fraction of blood

KW - Glassgraphite electrode

KW - Gold nanoparticles

KW - Gold single crystal

KW - Graphite electrode

KW - Particulate electrode

KW - Voltammetry

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