Double potential-step chronoamperometry and chronocoulometry at an ultramicrodisk electrode: Theory and experiment

被引:6
|
作者
Yu, JS [1 ]
Zhang, ZX [1 ]
机构
[1] Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China
基金
中国国家自然科学基金;
关键词
double potential-step; chronoamperometry and chronocoulometry; ultramicroelectrode;
D O I
10.1016/S0022-0728(97)00258-1
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The theoretical equations describing the reversible couple for double potential-step chronoamperometry and chronocoulometry at a microdisk electrode are derived. The experimental chronoamperometric and chronocoulometric responses at a platinum microdisk electrode with radius 10 mu m in the ferrocyanide/ferricyanide system for the time range of current measurement from 300 mu s to 500 ms agree well with the theory and demonstrate the advantages of the ultramicroelectrodes in electrochemical transient study. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:73 / 80
页数:8
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