摘要
用二 (2 乙基己基 )磷酸 (HDEHP)作萃取剂 ,二甲苯作稀释剂 ,在盐酸介质中 ,研究了从裂变产物中分离14 2 La的最佳条件 ,提出了“两步延迟分离法”的分离流程。流程所需时间约 1h ,14 2 La的化学回收率约80 % ,对主要γ核素的去污因子大于 1× 10 3 。
With HDEHP as an extractant and xylene as a solvent, the separation of)~142)La from fission products by solvent extraction is studied. Based on twice Ba-La extraction separations performed after proper delay time('twice delay separation method'),a one-hour separation procedure is designed and examined. The chemical recovery of)~142)La is about 80%, and the decontamination factors for most γ-emitters) are higher than 1×10~3.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2003年第4期219-222,共4页
Journal of Nuclear and Radiochemistry
