水-醇介质中离子交换分离超钚元素——Ⅰ.CH_3OH-NH_4NO_3-HNO_3-DTPA-阴离子交换树脂体系

ION EXCHANGE SEPARATION OF TRANSPLUTONIUM ELEMENTS IN AQUEOUS-ALCOHOL MEDIA Ⅰ. THE SYSTEM OF CH3OH-NH4NO3-HNO3-DTPA-ANION EXCHANGE RESIN

摘要: 本文研究了Am和Cm在CH_3OH-NH_4NO_3-HNO_3-DTPA溶液和阴离子交换树脂之间的分配系数。结果表明,DTPA的存在对Am和Cm的分离有显著的改善,二者的分离系数可达3.5-3.7。以适当的淋洗液进行柱分离实验,达到了Am,Cm,Cf三个元素的分离。

Abstract: In this work the distribution coefficients of Am and Cm between the solution of CH3OH-NH4NO3-HNO3-DTPA and anion exchange resin are studied. The results show that the separation of Cm from Am is considerably improved, the separation factors between Am and Cm can be as high as 3.5-3.7.The separations between Am-Cm-Cf are performed with suitable eluant mixture in column experiments.