摘要
本文研究了铬黑T(EBT)作萃取剂和显色剂,在聚乙二醇-2000(PEG)-Na2SO4-EBT双水相体系中Cu(Ⅱ)的显色反应条件及应用。实验结果表明,在pH8.5缓冲溶液中,将Cu(Ⅱ)络合物从水溶液中萃取到PEG相,其最大吸收波长位于560nm,摩尔吸光系数为3.05×104L·mol-1·cm-1,此法用于铝合金中铜的测定。
In polyethylene glycol\|2000(PEG)Na2SO4eriochrome black T(EBT)two\|phase aqueous system,the color reaction and application of Cu() by using EBT as extractant and development agent was studied.The results show that complex of Cu() was extracted by PEG phase from the water solution of pH8.5 ,the maxmum absorption of the complex is at 560nm and the molar absorptivity 3.05104Lmol-1cm-1.The proposed method was been applied to the determination of copper in aluminium alloy with satisfactory result.
出处
《光谱实验室》
CAS
CSCD
1999年第3期302-305,共4页
Chinese Journal of Spectroscopy Laboratory
关键词
聚乙二醇
铜
铬黑T
显色反应
测定
光度法
Polyethylene Glycol,Copper,Eriochrome Black T,Color Reaction.