Solvent extraction separation of Th(IV) and U(VI) with PC-88A

被引：14
|
作者：
Sarkar, SG [1 ]
Bandekar, SV [1 ]
Dhadke, PM [1 ]
机构：
[1] Univ Bombay, Dept Chem Technol, Inorgan Chem Lab, Bombay 400019, Maharashtra, India
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2000年 / 243卷 / 03期
关键词：
D O I：
10.1023/A:1010615629734
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Liquid-liquid extraction of Th(IV) and U(VI) has been investigated by commercial extractant PC-88A in toluene. The optimum conditions for extraction of these metals have been established by studying the various parameters like acid concentration/pH, reagent concentration, diluents and shaking lime. The extraction of Th(IV) was found to be quantitative with 0.1-1.0M HNO3 acid and in the pH range 1.0-4.0 while U(VI) was completely extracted in the pH range 1.0-3.5 with 2.5.10(-2)M and 2.10(-2)M PC-88A in toluene, respectively. The probable extracted species have been ascertained by log D-log C plot as ThR4.4HR and UO2R2.2HR, respectively. The method permits separation of Th(IV) and U(VI) from associated metals with a recovery of greater than or equal to 99.0%.
引用
收藏
页码：803 / 807
页数：5
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