Electrochemical behavior of L-dopa at single-wall carbon nanotube-modified glassy carbon electrodes

被引：89
|
作者：
Yan, XX [1 ]
Pang, DW [1 ]
Lu, ZX [1 ]
Lü, HQ [1 ]
Tong, H [1 ]
机构：
[1] Wuhan Univ, Dept Chem, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2004年 / 569卷 / 01期
基金：
中国国家自然科学基金;
关键词：
carbon nanotube; modified electrode; L-dopa; electrochemistry; determination;
D O I：
10.1016/j.jelechem.2004.02.011
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this paper, the electrochemical behavior of L-dopa at a single-wall carbon nanotube modified glassy carbon electrode was investigated by cyclic voltarnmetry, chronoamperometry, and chronocoulometry. The modified electrode exhibited good promotion of the electrochemical reaction Of L-dopa and greatly increased the standard heterogeneous rate constant. The peak currents of differential pulse voltarnmetry (DPV) Of L-dopa were linearly dependent on its concentration in a range from 5.0 x 10(-7) to 2.0 x 10(-5) mol L-(1), with a detection limit of 3.0 x 10(-7) mol L-1. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：47 / 52
页数：6
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