用均二苯基-16-冠-5-氧代乙酸从~(90)Sr-~(90)Y中萃取~(90)Y的研究

摘要: 用新型萃取剂均二苯基－１６－冠－５－氧代乙酸研究了Ｓｒ￣（２＋）和Ｙ￣（３＋）的萃取。结果表明，在适当ｐＨ条件下，Ｙ￣（３＋）可以定量地被萃取，而Ｓｒ￣（２＋）几乎全部留在水相中。利用斜率法确定了均二苯基－１６－冠－５－氧代乙酸与Ｙ￣（３＋）的配合物组成比为１：２。建立了从￣（９０）Ｓｒ中萃取无载体高纯放射性￣（９０）Ｙ的方法。

Abstract: A STUDY OF SOLVENT EXTRACTION OF FROM WITH SYM-DIBENZO-16-CROWN-5-OXYACETICACIDDU HONGSHAN（China Institute of Atomic Energy，P.O. Box 275（22），Beijing 102413）C .M. WAI（University of Idaho,USA）ABSTRACT The Solvent extraction of and is studied with a new type extractant sym-dibenzo-16- crown- 5-oxyacetic acid （HL） in chloroform. is quantitatively extracted at pH6．5，whereasthe extraction of Sr~(2+)is negligible. Separation of from can be achieved by solvent extrac-tion with HL. The mechanism of extraction of Y~(3+) is discussed. Key words Sym-dibenzo-16- crown-5-oxyacetic acid Solvent extraction