高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (2): 186.

• 论文 • 上一篇    下一篇

非配偶型铂电极上的电位滴定

邢宝忠, 翁筠蓉, 朱俊杰, 高鸿   

  1. 南京大学化学系, 210008
  • 收稿日期:1989-07-18 出版日期:1991-02-24 发布日期:1991-02-24
  • 通讯作者: 翁筠蓉
  • 基金资助:

    国家自然科学基金

Potential Titration on Uncoupled Platinum Electrode

Xing Bao-zhong, Weng Yun-rong, Zhu Jun-jie, Gao Hong   

  1. Department of Chemistry, Nanjing University, Nanjing, 210008
  • Received:1989-07-18 Online:1991-02-24 Published:1991-02-24

摘要: 配偶型铂电极上的电位滴定是Nernst型滴定,其"电极/溶液"界面上总有一对决定电位的电对。非配偶型电极的界面上不存在明显的电对,通常终点很难判断。本文采用示波器代替电位测量仪指示电位变化。由于荧光点的移动十分迅速又无惯性,所以在滴定终点时能敏锐地反映瞬时电位峰,指示终点,使一大类原来不能进行的滴定得以进行。

关键词: 非配偶型铂电极, 电位滴定, 示波器

Abstract: In this paper, it is shown that the potential titration was carried out on a uncoupled platinum electrode. The platinum eletcrode used as an indication electrode, must should be treated with abasic solution. The change of E-t curves on the end-point was given in the form of peak-shape and could be observed on the oscillograph. This methed was applied to complexometric, precipitating and neutralizing titrations. The accurate results obtained will be significant for the theoretical reseach.

Key words: Uncoupled platinum electrade, Poltential titration, Oscillograph

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