中华医学超声杂志

应用化学 ›› 1988, Vol. 0 ›› Issue (5): 63-66.

• 研究论文 • 上一篇    下一篇

圆盘微电极的卷积和交流伏安行为

董绍俊, 贺军   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1987-06-24 修回日期:1987-12-11 出版日期:1988-10-10 发布日期:1988-10-10

DECONVOLUTION VOLTAMMETRY AND AC VOLTAMMETRY AT DISK MICROELECTRODE

Dong Shaojun, He Jun   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1987-06-24 Revised:1987-12-11 Published:1988-10-10 Online:1988-10-10

PDF

477

被引次数

4

摘要： 研究了可逆氧化还原对(以二茂铁为例)在圆盘微铂电极上的卷积法,包括一阶导数卷积(e),二阶导数卷积(e′),三阶导数卷积(e″)的行为.结果表明,在微电极上的 e-E曲线类似于常规电极的循环伏安曲线。e、e′和e″曲线的峰高与扫速幂次的关系与悬汞电极上的规律相符,但其值分别为0.5、1.5、2.5.还研究了微电极的交流伏安行为,得到铁氰化钾的特征电位值。

关键词: 微电极, 卷积法, 交流伏安法

Abstract: The investigation of a reversible reaction at disk microelectrode by deeonvolution voltammetry including semi-(e),1.5th(e′)and 2.5th(e″)differential voltammetry is presented. The peak shape of e-E curve is similar to the voltammgram obtained at conventional electrode.The relationship between the peak height of e,e′or e″and scan rate shows 0,5,1.5 and 2.5 order at disk microelectrode respectively,0.5 order lower than that at HMDE,The advantage of using microelectrode in deconvolution voltammetry is high sensitivity and selectivity,The behavior of a redox reaction at disk microelectrode by phase-selective AC voltammetry for the first and second harmonics is also described.

Key words: Microelectrode, Deconvolution, AC voltammetry

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