摘要
本文用光度分析法,研究了在聚乙二醇-硫酸钠-萃取剂双水相体系中茜素S、孔雀绿和PAR的萃取行为,提出了萃取剂与聚乙二醇之间水作为中介的氢键作用。探讨了Zr(Ⅳ),Ti(Ⅳ),La(Ⅲ)几种稀有金属离子在聚乙二醇-硫酸钠-茜素S体系中萃取条件,结果表明,在pH 1-3缓冲溶液中,Zr(Ⅳ)几乎完全可被PEG相萃取,La(Ⅲ)离子部分被萃取,而Ti(Ⅳ)离子则不被萃取,通过控制溶液酸度(pH2),实现了Ti(Ⅳ)与Zr(Ⅳ)的萃取分离。
In this paper, the extraction behaviors of alizarin red S (ARS), PAR and malachite green (MG) in the polyethylene glycol-sodium sulphate-extractant two-aqueous phase systems were investigated. It is showed that hydrogen bond interaction exists between extractant and polyethylene glycol with water as the intermediary. The extraction conditions of Zr(Ⅳ), Ti(Ⅳ) and La( Ⅲ) in the polyethylene glycol-sodium sulphate-alizarin red S system were discussed. The results indicated that the complex of Zr(Ⅳ) with alizarin red S was almost completely extracted by the PEG phase, La(Ⅲ) was partly extracted, while Ti(Ⅳ) ion was not extracted from the aqueous solution of pH 1-3. The extraction separation of Ti(Ⅳ) and Zr(Ⅳ) was carried out by controlling the solution acidity at pH 2.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2003年第5期1015-1017,共3页
Spectroscopy and Spectral Analysis
基金
安徽省教育厅自然科学基金项目(2001kj195)资助
