摘要
高聚物PEG 2000的水溶液在无机盐存在时能分成液-固两相。溶液分相时所需盐的浓度同PEG 2000水溶液的浓度、酸度、温度和所用盐的种类有关。研究了萃取剂偶氮胂Ⅲ及其与 Zr(Ⅳ)、Sc(Ⅲ)、La(Ⅲ)的配合物在体系中的液-固两相间的分配行为。以控制溶液的酸度实现了 Zr(Ⅳ)-Sc(Ⅲ)、Zr(Ⅳ)-La(Ⅲ)间的液-固定量萃取分离。方法简便,应用结果满意。
The aqueous solution of PEG 2000,a water-soluble polymer,can be separated into liquidand solid phases by adding some kinds of salts.The salt concentration required for phase separa-tion depends on the concentration of PEG 2000solution,the acidity,the temperature and thekind of salt used.The distribution of water-soluble ligand arsenazo Ⅲ and its chelates of Zr(Ⅳ),Sc(Ⅲ)and La(Ⅲ)between two phases inthis system was investigated.The quantitativeextraction separation of Zr(Ⅳ)-La(Ⅲ)and Zr(Ⅳ)-Sc(Ⅲ)was carried out by controlling so-lution acidity.The method is simple and theresults are satisfactory.
出处
《化学试剂》
CAS
CSCD
北大核心
1991年第4期205-207,共3页
Chemical Reagents
