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应用科学学报 ›› 1990, Vol. 8 ›› Issue (4): 367-370.

• 研究简报 • 上一篇    

N235萃取型碳糊修饰电极测定金的研究

彭图治, 施清照, 吕荣山   

  1. 杭州大学
  • 收稿日期:1988-11-10 修回日期:1989-05-24 出版日期:1990-12-31 发布日期:1990-12-31

A STUDY OF DETERMINATION OF GOLD AT AN EXTRACTIVE CARBON PASTE ELECTRODE MODIFIED WITH ALKYL TERTIAL AMINE(N235)

PENG TUZHI, SHI QINGZHAO, LU RONGSHAN   

  1. Hangzhou University
  • Received:1988-11-10 Revised:1989-05-24 Online:1990-12-31 Published:1990-12-31

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摘要： 碳糊化学修饰电极是在普通碳糊中加入特定的化学修饰剂而制成的一类新型电极.由于碳糊电极本身具有较大的电位使用范围,背景电流低,表面更新方便,并且容易与各种固体和液体试剂混合,因而这类修饰电极近年来得到了迅速发展[1~3].

Abstract: A carbon paste electrode chemically modified with alkyl tertial amine (N235) is used for the selective accumulation of gold (Ⅲ). The calibration plots are linear for the 0.1~10mgL-1 range and the detection limit is 0.07mgL-1 This electrode has been used to measure gold concentration in soma mineral samples without preisolation. The preparation and the electrochemical properties of the electrode, and the mechanism of extraction and activation are studied.