化学学报 ›› 1995, Vol. 53 ›› Issue (6): 590-594. 上一篇    下一篇

研究论文

铜(Ⅱ)催化PHA的褪色反应特性及应用

缪吉根;蔡汝秀;曾云鹗   

  1. 浙江师范大学化学系;武汉大学化学系
  • 出版日期:1995-06-15 发布日期:1995-06-15

The character of PHA decolorizing reaction with copper(Ⅱ) catalysis and its application

MIAO JIGEN;CAI RUXIU;ZENG YUNE   

  • Online:1995-06-15 Published:1995-06-15

本文研究了铜(Ⅱ)催化抗坏血酸还原多卤代变色酸双偶氮胂类试剂(PHA)的褪色反应特性, 讨论了试剂结构对褪色反应动力学特性的影响, 探讨了反应机机。以三氯偶氮胂为代表, 拟定了测定痕量铜(Ⅱ)的新方法, 其检出限为3.06×10^-^1^2g/mL, 线性范围为0~28ng/10mL。用于生物材料中痕量铜(Ⅱ)的测定, 结果满意。

关键词: 比色法, 铜, 显色剂, 催化分析, 动力学研究

The decolorizing reaction character of polyhalogenated bisazo derivative of chromotropic acid containing-AsO~3H~2 (PHA) with ascorbic and by copper(Ⅱ) catalysis has been investigated. The influence of reagent structure on decolorizing reaction kinetic character and the reaction mechanism have been discussed. The method for the determination of trace copper(Ⅱ) by using trichloroarsenazo was studied. The detection limit is 3.06×10^-^1^2g/mL and linear range is 0~28ng/10mL for copper(Ⅱ). The method has been applied to the determination of trace copper in bio-material with satisfactory results.

Key words: COLORIMETRIC METHOD, COPPER, COLOUR REAGENTS, CATALYTIC ANALYSIS, KINETIC STUDY

中图分类号: