摘要
研究了吐温８０水溶液在不同硫氨酸盐存在下分成液－固两相的条件和金属离子的硫氰酸根络合物在该体系两相间的分配行为。以ＫＳＣＮ为分相的盐析剂和萃取剂，借控制溶液酸度等方法，实现了Ｚｒ（Ⅳ）－Ｌａ（Ⅲ），Ｆｅ（Ⅲ）－Ｌａ（Ⅲ），Ｓｃ（Ⅲ）－Ｌａ（Ⅲ）等的定量萃取分离。试验结果表明，金属离子与ＳＣＮ－形成络阴离子被萃入吐温８０因相。
In the presence of various thiocyanate salts,The conditions for the phase separation of aqueous Tween 80 solution were studied.The distribution behaviour of the complexes of some metal ions with thiocyanate between the liqUid and solid phases was esamined.With KCNS as salting-out reagent and extractant,the qUantitative extraction separation of Zr(Ⅳ)-La(Ⅲ),Fe(Ⅲ)-La(Ⅲ)and Sc(Ⅲ)-La(Ⅲ) was cxrried out by controlling the acidity of the solution.The experimental results explained that the anionic complexes of some metal ions with SCN-can be extracted into the Tween 80 solid phase.
出处
《化学试剂》
CAS
CSCD
北大核心
1995年第3期155-157,170,共4页
Chemical Reagents
基金
国家自然科学基金
关键词
液-固萃取
吐温80
硫氰酸钾
锆
铁
钪
镧
liquid-solid extraction
Tween 80
potassium thiocyanate
separation and determination of Zr、Fe、Sc and La
