应用化学 ›› 1989, Vol. 0 ›› Issue (3): 81-83.

• 研究简报 • 上一篇    下一篇

微分示波电位滴定法 Ⅱ.铂电极上Cu2+的DDTC-滴定

刘晓华, 张文彬, 高鸿   

  1. 南京大学化学系
  • 收稿日期:1988-03-24 修回日期:1988-10-04 出版日期:1989-06-10 发布日期:1989-06-10

DERIVATIVE OSCILLOGRAPHIC POTENTIOMETRIC TITRATION Ⅱ.TITRATION OF Cu2+ BY DPTC- ON PLATINUM ELECTRODE

Liu Xiaohua, Zhang Wenbin, Gao Hong(H. Kao)   

  1. Department of Chemistry, Nanjing University
  • Received:1988-03-24 Revised:1988-10-04 Published:1989-06-10 Online:1989-06-10

摘要: 卜海之等报导[1],当铂、碳或银电极上沉积有一层Ag-TPB(TPB代表四苯硼钠离子)时,该电极对Ag+及TPB-均有响应,这样的电极可用于Ag+及TPB-的示波电位滴定,其滴定曲线一般为台阶形.若在线路中加一电容就可将电位曲线微分为峰形,并可以荧光点的最大位移指示滴定终点.本文报导用二乙基二硫代氨基甲酸(DDTC-)滴定Cu2+,目的在于将微分示波电位滴定法应用于-大类为数众多的沉淀反应.

关键词: 示波法, 电位滴定, 铜离子, 沉淀反应

Abstract: The results of determination of cupric ion in synthetic and superconductor samples by DDTC- on platinum electrodes using derivative oscillographic potentiometric techniqueproves the simplicity and rapidity of the method proposed by the authors.

Key words: Oscillography, Potentiometric titration, Cupric ion, Precipitation reaction