高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (8): 1207.

• 研究简报 • 上一篇    下一篇

非常规铜离子敏感碳糊电极的研究

胡效亚, 冷宗周   

  1. 扬州大学师范学院化学化工系, 扬州, 225002
  • 收稿日期:1994-11-05 修回日期:1995-03-10 出版日期:1995-08-24 发布日期:1995-08-24
  • 通讯作者: 胡效亚,男,35岁,副教授.
  • 作者简介:胡效亚,男,35岁,副教授.

Studies on Uncommon Response for Cu2+by Potentiometry of Carbon Paste Electrode

HU Xiao-Ya, LENG Zong-Zhou   

  1. Department of Chemistry and Chemical Engineering, Teachers College, Yangzhou University, 225002
  • Received:1994-11-05 Revised:1995-03-10 Online:1995-08-24 Published:1995-08-24

关键词: 电位法, 碳糊电极, 铜离子, 铜离子选择性

Abstract: This paper describes a potentiometric method for the determination of Cu2+in 0.1 mol/L HAc-NaAc-0.05 mol/L NaCl buffer(pH5.00)using a carbon paste electrode(without ionophore,mixing paraffin liquid and spectroscopic graphite powder at a ratio of 1.5:1W/ W).The linear range is 2.5 ×10-6~1.0×10-3mol/Lwith 49 mV/decade of calibration slope. It exhibits a high selectivity and a desired reproducibility. The potential response behavior is caused by carbon paste extraction(or adsorption) of the matter being measured and the redox potential mechanism.

Key words: Potentiometry, Carbon paste electrode, Copper ion, Copper-selectivity

TrendMD: