Determination of dopamine in the presence of ascorbic acid using poly(3,5-dihydroxy benzoic acid) film modified electrode

被引：73

作者：

Hou, Shurong ^{[1
]}

Zheng, Na ^{[1
]}

Feng, Haiyan ^{[1
]}

Li, Xiangjun ^{[1
]}

Yuan, Zhuobin ^{[1
]}

机构：

[1] Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China

来源：

ANALYTICAL BIOCHEMISTRY | 2008年 / 381卷 / 02期

基金：

中国国家自然科学基金;

关键词：

poly(3,5-dihydroxy benzoic acid) film; modified electrode; electrocatalysis; dopamine; ascorbic acid;

D O I：

10.1016/j.ab.2008.03.055

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A polymerized film of 35-dihydroxy benzoic acid (DBA) was prepared on the Surface of a glassy carbon electrode (GCE) in neutral solution by cyclic voltammetry (CV). The poly(DBA) film-coated GCE exhibited excellent electrocatalytic activity toward the oxidation of dopamine (DA). A linear range of 1.0 x 10(-7) to 1.0 x 10(-4) M and a detection limit of 6.0 x 10(-8) M were observed in pH 7.4 phosphate buffer solutions. Moreover, the interference of ascorbic acid (AA) was effectively eliminated. This work provides a simple and easy approach to selective detection of DA in the presence of AA. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：179 / 184

页数：6

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