Electrochemical behavior of dopamine and ascorbic acid at dendritic Au rod surfaces: Selective detection of dopamine in the presence of high concentration of ascorbic acid

被引：42

作者：

Ahn, Miri ^{[1
]}

Kim, Jongwon ^{[1
]}

机构：

[1] Chungbuk Natl Univ, Dept Chem, Cheongju 361763, Chungbuk, South Korea

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2012年 / 683卷

基金：

新加坡国家研究基金会;

关键词：

Dendritic Au rod; Dopamine; Ascorbic acid; Differential pulse voltammetry; GLASSY-CARBON ELECTRODE; URIC-ACID; GOLD; ELECTROCATALYSIS; FABRICATION; GLUCOSE; AREA;

D O I：

10.1016/j.jelechem.2012.08.012

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Electrochemical behavior of dopamine (DA) and ascorbic acid (AA) at dendritic Au rod (DAR) surfaces prepared by a simple and fast electrodeposition from sulfite-based Au(I) electrolytes was investigated. The unique DAR structures with sharp edge Au sites differentiated the anodic waves between DA and AA, and the electrooxidation of DA at DAR surfaces was significantly enhanced at lower DA concentration ranges. The DAR surfaces enabled the differential pulse voltammetric determination of DA in the presence of 0.1 mM of AA, and the modification of the DAR with Nafion layer; enhanced the sensitivity and selectivity against AA. Electrochemical deposition would offer an efficient route for fabricating nanostructured surfaces for electrochemical determination of biologically important species. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：75 / 79

页数：5

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