高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (5): 586.

• 论文 • 上一篇    下一篇

微电极研究(Ⅹ)——微盘电极上稳态过程导数伏安法

鞠熀先, 陈洪渊, 高鸿   

  1. 南京大学化学系, 南京, 210008
  • 收稿日期:1997-01-12 出版日期:1992-05-24 发布日期:1992-05-24
  • 通讯作者: 陈洪渊
  • 基金资助:

    国家自然科学基金;中国科学院长春应用化学研究所电分析化学开放实验室基金

Investigation on Microelectrodes (Ⅹ)——The Steady-State Differential Voltammetry on Microdisc Electrode

JU Huang-xian, CHEN Hong-yuan, GAO Hong(H. Kao)   

  1. Department of Chemistry, Nanjing University, Nanjing, 210008
  • Received:1997-01-12 Online:1992-05-24 Published:1992-05-24

摘要: 本文研究了微盘电极上单扫描、一次导教、二次导数及三次导数的稳态扩散电流方程,一次导数的电流峰与扫描速率v成正比,二次导数及三次导数的电流峰分别与v2、v3成正比,从而提高了响应灵敏度,通过它们的波形可以很方便地求得电极反应的标准电极电位,判断反应的可逆性,用碳纤维微盘电极进行了验证,结果与理论方程一致。

关键词: 微盘电极, 碳纤维微电极, 稳态伏安法, 战性扫描伏安法, 导数伏安法

Abstract: The steady-state diffusion current equations of single-sweep, the first differential, the second differential and the third differential voltammetry on microdisc electrode were studied.These currents are directly proportional to r, C, D.The single-sweep limit current is independent of the sweep rate (v), and the first, second and third differential peak current are proportional to v, v2, v3, respectively.These results are verified experimental with carbon fiber microdisc electrode.

Key words: Microdisc electrode, Carbon fiber microelectrode, Steady-state voltammetry, Linear sweep voltammetry, Derivative voltammetry

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