高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (1): 18.

• 研究论文 • 上一篇    下一篇

壁喷电池在流动注射阳极溶出伏安法中的应用

高国强1, 漆德瑶2   

  1. 1. 中国药科大学分析化学教研室;
    2. 上海工业大学化学化工系
  • 收稿日期:1988-07-15 出版日期:1990-01-24 发布日期:1990-01-24
  • 通讯作者: 高国强

Application of Wall-Jet Electrode in Anodic Stripping Voltammetry with Flow Injection Analysis

Gao Guoqiang1, Qi Deyao2   

  1. 1. Teaching and Reseurch Group of Anaiytical Chemistry, China Pharmaceutioal University, Nanjing;
    2. Department of Chemistry, Shunghai university of Technology, Shanghai
  • Received:1988-07-15 Online:1990-01-24 Published:1990-01-24

摘要: 在流动注射阳极溶出伏安法中应用壁喷电池,探讨了非稳定态电积过程的溶出峰电流理论方程,预言了峰电流正比于R3/4(R为工作电极半径),并对有关参数进行了实验验证。对5×10-7mol/LCd(Ⅱ)连续测定40次,表明相对标准偏差为0.94%。

关键词: 壁喷电池, 流动注射, 溶出伏安法

Abstract: Awall-jet electrode was used in anodic stripping voitammetry with flow injection analysis. The equation derived from conventional stripping voltammetry with steady state deposition current is not applicable to a nonsteady state deposition process as in the FIAsystem, Atheoretical equation for the stripping peak current under flow injection condition was proposed. The peak current is predicted to be proportional to the R3/4(Ris the radius of the working electrode). This relation was verified through experiment results. With this system the experiment results show that the relative standard deviation is 0. 94% for determining 5×10-7 mol/L Cd( Ⅱ ).

Key words: Wall-jet electrode, Flow injection analysis, Stripping voitamrnetry

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