中华医学超声杂志

应用化学 ›› 1992, Vol. 0 ›› Issue (2): 76-78.

• 研究简报 • 上一篇    下一篇

金在碳糊电极上的静电吸附及溶出伏安测定

彭图治, 王国顺, 朱沛林   

  1. 杭州大学化学系, 杭州 310028
  • 收稿日期:1991-03-21 修回日期:1991-05-17 出版日期:1992-04-10 发布日期:1992-04-10
  • 基金资助:
    中国科学院长春应用化学研究所电分析化学开放实验室资助

ELECTROSTATIC ADSORPTION OF GOLD (Ⅲ) ON CARBON PASTE ELECTRODE AND ITS VOLTAMMETRIC DETERMINATION

Peng Tuzhi, Wang Guoshun, Zhu Peilin   

  1. Department of Chemistry, Hangzhou University, Hangzhou 310028
  • Received:1991-03-21 Revised:1991-05-17 Published:1992-04-10 Online:1992-04-10

PDF

471

被引次数

22 | 5

摘要： 阳极溶出伏安法测定金具有灵敏度高,操作简便等优点,但共存金属往往干扰测定,影响该方法的应用[1]。为减少干扰,已有阴极溶出伏安法的报道[2]。

关键词: 碳糊电极, 吸附伏安法, 金

Abstract: A sensitive method for determination of gold in ore using cathodic stripping voltammetry is reported.The method is based on the adsorption of AuCl4- on the carbon paste surface at+1.4V (vs Ag/AgCl) in 0.1mol/L HCl solution.In the concentration range of 2～100ng/mL the stripping current and concentration of gold appeared a linear relationship. The detection limit is 0.2ng/mL after 5 min accumulation. The effects of different parameters on the response were examined.

Key words: carbon paste electrode, adsorptive stripping voltammetry, gold

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