摘要
本文研究了一种新型分离富集水溶液中痕量锌的方法——准液膜法。用二-乙基己基膦酸单-2-乙基己基酯迁移Zn^(+2)离子,用H_2SO_4解吸Zn^(2+)离子,迁移与解吸同步进行。在最佳准液膜体系及操作条件下,锌的回收率可达90％以上,降低了火焰原子吸收光谱法的检测下限。
Pseudo liquid membrane separation techiquc was used in separating and enriching trace zinc in aqueous solution. L-L extraction and counter-extraction were contracted into one step of operation by means of different dcnsites among feed, extractant and strippan. Zn(Ⅱ) ion can be transfered fully by P507 (or PC88A) from feed solution into strippant solution. The recovery of zinc was over 90%.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1991年第8期914-916,共3页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金资助课题
关键词
锌
分离富集
准液膜法
Pseudo liquid membrane
Separation
Enrichment
Zinc
