摘要
提出用TTA-TBPO为协同流动载体的乳状液膜分离它集抗（Ⅲ）的方法。其最佳液膜体系的组成为4％Span80.5％TTA、3％TBPO、4％液体石蜡、84％煤油和内相水溶液（4mol/L），最优实验条件，提取钪（Ⅲ）的外相试液为pH=1．3～2．3，Roi（油内比）为1：1，Rew（乳水比）为20：100。本法用于分离富集稀土元素中的微量钪（Ⅲ），其回收率可达99．1％以上，相对标准偏差为3．5％以下，结果十分满意。
篠candium (Ⅲ) was enrichment by the emulsion liquid membrane method using TTA-TBPo as a synergetie mobile carrier. The optAnum constitions of the highperfor-mance liquid membrane sytem 4% Span 80, 5% TTA, 3H TBPO, 4% paraffin liquid,84% kerosene, internal phase (4 mol/L HCl) and the opthoal conditions of separtionand enrichment are determined. The extraction as follows: pH = 1. 3- 2. 3 for feedliquid- Roi =1: 1, Rew =20: 100, separation and enriched of minute amounts of Sc3+in rare earths (RE), with recovery of more than 99.1 %, ralative standard deviation is3. 5%.
出处
《广州化学》
CAS
1996年第3期58-62,共5页
Guangzhou Chemistry
关键词
钪
稀土元素
分离
富集
液膜
scandium, rare earth element, separation enrichment, liquid membrane
