Electrogenerated chemiluminescence determination of dopamine and epinephrine in the presence of ascorbic acid at carbon nanotube/nafion-Ru(bpy)2+3 composite film modified glassy carbon electrode

被引：61

作者：

Guo, ZH ^{[1
]}

Dong, SJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China

来源：

ELECTROANALYSIS | 2005年 / 17卷 / 07期

关键词：

electrogenerated chemiluminescence; Ru(bpy)(2+)(3); tripropylamine; inhibition; carbon nanotube; nafion; dopamine; epinephrine; ascorbic acid;

D O I：

10.1002/elan.200403129

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Based on the inhibition effect of dopamine and epinephrine on Ru(bpy)(2+)(3)-tripropylamine electrogenerated chemiluminescence system, the excellent properties of carbon nanotube, and the cation permselectivity of Nafion film. an electrogenerated chemiluminescence inhibition method for determination of dopamine and epinephrine in the presence of ascorbic acid at carbon nanotube/Nafion-Ru(bpy)(2+)(3) composite film modified glassy carbon electrode was described. The results showed that the proposed method was sensitive and selective for the determination of dopamine and epinephine. The linear calibration range was from 1.6 x 10(-9) M to 3.2 x 10(-5) M and 5 x 10(-8) M to 6 x 10(-5) M for dopamine and epinephrine, respectively. 200-fold excess of ascorbic acid did not interfere with the determination of 1 mu M dopamine and epinephrine.

引用

页码：607 / 612

页数：6

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