高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (9): 962.

• 研究简报 • 上一篇    下一篇

离子选择性电极动力学分析法测定银

仰蜀薰, 马万红   

  1. 郑州大学化学系
  • 收稿日期:1988-01-25 出版日期:1989-09-24 发布日期:1989-09-24
  • 通讯作者: 仰蜀薰

Determination of Trace Silver by Catalytic Method with CN Ion Selective Electrode

Yang Shuxun, Ma Wanhong   

  1. Department of Chemistry, Zhengzhou University, Zhengzhou
  • Received:1988-01-25 Online:1989-09-24 Published:1989-09-24

关键词: 离子选择性电极, 动力学分析, 催化法,

Abstract: This paper reports a catalytic method for determing silver (I), using CN-ion selective clectrode which is based on the reaction between potassium ferrocyanide and water with silver(I) ion catalyst and a,a'-bipyridyl as the activator.Taking a fixed time procedure, the potential difference of catalytic and noncatalytic reaction is linearly related to the concentration of silver (I) ion in the range of 2.5×10-9~8.0× 10-8 mol/L.Using the proposed method, we determined the mount of sisver in four standard samples of silicate with satisfactory result.The reaction mechanism is as discussed.

Key words: Ion selective electrode, Kinetic analysis, Catalytic method, Silver

TrendMD: