萃取色层法制备无载体钍-234

THE PREPARATION OF CARRIER-FREE ~(234)Th BY EXTRACTION-CHROMATOGRAPHY

摘要: <正> 钍-234常用作钍元素的示踪原子。制备钍-234的方法有许多报道,例如:阳离子交换、吸附共沉淀和溶剂萃取三者相结合的分离方法;6 mol/lHCl中阴离子交换法;纸上沉淀带载留法以及乙醚溶剂萃取法。我们采用CL-TBP苹淋树脂为固定相的萃取色层法从铀中分离了无载体~(234)Th。方法简便,原料铀可重复使用,在硝酸体系中操作,废液单一,易于处理。

Abstract: In the present work, carrier-free~(234)Th was separated from uranium by extra-action chromatography with the CL-TBP Levextrel as the fixed phase. This methodis simple and has the advantages that the starting material uranium is reusableand that the generated liquid waste is easy to be treated.