Simultaneous determination of dopamine, ascorbic acid, and uric acid using helical carbon nanotubes modified electrode

被引：124

作者：

Cui, Rongjing ^{[1
,2
]}

Wang, Xueying ^{[1
]}

Zhang, Genhua ^{[2
]}

Wang, Chen ^{[1
]}

机构：

[1] Changshu Inst Technol, Jiangsu Lab Adv Funct Mat, Dept Chem & Mat Engn, Changshu 215500, Peoples R China

[2] Changshu Inst Technol, Suzhou Key Lab Food Qual & Safety, Sch Biol & Food Engn, Changshu 215500, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2012年 / 161卷 / 01期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Helical carbon nanotubes; Simultaneous determination; Uric acid; Ascorbic acid; Dopamine; SIMULTANEOUS VOLTAMMETRIC DETECTION; LARGE-SCALE SYNTHESIS; NANOPARTICLES;

D O I：

10.1016/j.snb.2011.11.040

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

Helical carbon nanotubes (HCNTs) as a novel carbon material have been prepared and the catalytic activities of HCNTs-modified glassy carbon electrode (GCE) towards the electrooxidation of uric acid (UA), ascorbic acid (AA), and dopamine (DA) have been investigated. Comparing with the bare GCE, the HCNTs modified GCE (HCNTs/GCE) has higher catalytic activities towards the oxidation of AA, DA, and UA. Moreover, the peak separations between AA and DA, and DA and UA at the HCNTs/GCE are 102 and 245 mV, respectively. Thus the simultaneous determination of AA, DA, and UA was carried out successfully. In the co-existence system of AA, DA, and UA, the linear response range for AA, DA, and UA are 7.5-180 mu M, 2.5-105 mu M and 6.7-65 mu M, respectively and the detection limits (S/N = 3) are 0.92 mu M, 0.8 mu M and 1.5 mu M, respectively. (c) 2011 Elsevier B.V. All rights reserved.

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页码：1139 / 1143

页数：5

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