国产烷基硫代磷酸的组成及其对Am~(3+)、Eu~(3+)的萃取

摘要: 用红外光谱法、核磁共振波谱法、质谱法测定了两种国产二烷基硫代磷酸的组成；测定了二烷基二硫代磷酸在有、无常量Ｎｄ＋Ｐｒ存在时萃取示踪量Ａｍ~（３＋）和Ｅｕ~（３＋）的分配比。实验结果表明，当存在常量轻镧系元素时，适当皂化的二烷基二硫代磷酸对Ａｍ~（３＋）有一定的萃取选择性。磷酸三丁酯的加入对萃取剂选择性影响很小。

Abstract: THE COMPOSITION AND EXTRACTION BEHAVIOR TOWARD AMERICIUM AND EUROPIUM OF HOME MADE DIALKYLTHIOPHOSPHORIC ACIDJiao Rongzhou;Zhu Yongjun(Institute of Nuclear Energy Technology，Tsinghua University，P.O. Box 1021，Beijing 102201)Wang Qinzhu(Department of Chemistry，Tsinghua University, Beijing 100084)Abstract: The composition of two home-made dialkylthiophosphoric acids is analyzed by means of IR，NMR and MS，The distribution ratios of trace amount Am~(3＋)and Eu~(3＋)are measured in the ab sence and presence of macro amount Nd ＋ Pr under difterent conditions. Property saponified di alkyldithiophosphoric acid shows some selectivity toward Am~(3＋)in the presence of macro amount light lanthanides，The addition of TBP has small effect on the selectivity of the extractant.Keywords: Dlalkylthiophosphoric acid Am~(3＋) Eu~(3＋) Extraction