Poly(3,4-ethylenedioxythiophene)-modified Ni/silicon microchannel plate electrode for the simultaneous determination of ascorbic acid, dopamine and uric acid

被引：66
作者：
Yu, Shiji [1 ]
Luo, Chunhua [2 ]
Wang, Lianwei [1 ]
Peng, Hui [1 ]
Zhu, Ziqiang [1 ]
机构：
[1] E China Normal Univ, Minist Educ, Key Lab Polarized Mat & Devices, Shanghai 200241, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
来源：
ANALYST | 2013年 / 138卷 / 04期
关键词：
GLASSY-CARBON ELECTRODE; PASTE ELECTRODE; ELECTROCHEMICAL DETECTION; CONDUCTING POLYMERS; BRAIN; SENSOR; NANOPARTICLES; SPECTROSCOPY; ABSORPTION; DEMENTIA;
D O I：
10.1039/c2an36335f
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A Ni/silicon microchannel plate (Ni/Si MCP) electrode modified with poly(3,4-ethylenedioxythiophene) (PEDOT) was successfully fabricated. The analytical performance of prepared electrode for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) was investigated by using cyclic voltammetry and differential pulse voltammetry (DPV). The sensitivities for AA, DA and UA obtained by DPV are 5.39 A m(-2) mM(-1), 0.054 A m(-2) mu M-1 and 0.022 A m(-2) mu M-1, respectively. The calculated detection limits were 10 mu M (AA), 1.5 mu M (DA) and 2.7 mu M (UA). The prepared electrode was successfully applied to the detection of AA, DA and UA in urine samples. The experiments illustrate that Ni/Si MCP is a good electrode material which provides a large surface-to-volume ratio and enhances the selectivity and sensitivity.
引用
收藏
页码：1149 / 1155
页数：7
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