Simultaneous determination of dopamine and ascorbic acid at a poly(toluidine blue) modified electrode

被引：19

作者：

Chen, YL ^{[1
]}

Yuan, JH ^{[1
]}

Wang, XZ ^{[1
]}

Tian, CX ^{[1
]}

机构：

[1] China Univ Geosci, Fac Chem Engn & Mat Sci, Wuhan 430074, Peoples R China

来源：

ANALYTICAL SCIENCES | 2004年 / 20卷 / 12期

关键词：

D O I：

10.2116/analsci.20.1725

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel polymer modified electrode is discussed in this paper. This resulting electrode can catalyze remarkably toward the electrochemical oxidations of dopamine (DA) and ascorbic acid (AA). Moreover, it can clearly discriminate the electrochemical oxidations of DA from that of AA based on their semi-derivative voltammograms. Hence, a simultaneous determination of DA and AA based on semi-derivative voltammetry at a poly(toluidine blue) modified electrode is suggested. The detection linear range for DA is 0.4 mumol L-1 - 1.5 mmol L-1, and AA 0.2 mumol L-1 - 2.4 mmol L-1, respectively. The resulting modified electrode was tentatively used to determine DA and AA in brain tissue.

引用

页码：1725 / 1728

页数：4

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