摘要
本文研究了铜(Ⅱ)催化抗坏血酸还原多卤代变色酸双偶氮肿类试剂(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,探讨了反应机理.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^(-12)g/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.
The decolorizing reaction character of polyhalogenated bisazo derivative of chromotropic acid containing -AsO3H2 (PHA) with ascorbic acid 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 3.06×10-12g/ 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.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1995年第6期590-594,共5页
Acta Chimica Sinica
基金
国家自然科学基金资助课题.
