Voltammetric determination of cysteine at a graphite electrode modified with gold nanoparticles

被引：0
作者：
D. O. Perevezentseva
E. V. Gorchakov
机构：
[1] Tomsk Polytechnic University,Department of General and Inorganic Chemistry
[2] Tomsk Polytechnic University,Innovative Scientific
来源：
Journal of Solid State Electrochemistry | 2012年 / 16卷
关键词：
Cyclic voltammetry; Electrocatalysis; Cysteine; Gold nanoparticles;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The electrochemical behaviour of cysteine (Cys) at a graphite electrode modified with gold nanoparticles (G-Aunano electrode) was studied by cyclic voltammetry. It was found that the graphite electrode-Au nanoparticles show an electrocatalytic activity towards the oxidation of Cys in 0.1 M NaOH. At 0.05 V, there is an “inverse” maximum in the cathodic voltammogram of Cys. Using a G-Aunano electrode, the dependence of the peak current of the “inverse” maximum on Cys concentration was linear in the range from 1 to 14 pM, and the detection limit was 0.6 pM. The proposed analytical method is simple, rapid and sensitive.
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页码：2405 / 2410
页数：5
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