加压排代色谱法分离纯化~(153,159)Gd的工艺研究

摘要: 研究了用加压排代色谱新工艺从堆照产物钆中分离少量放射性杂质~（１５２，１５４）Ｅｕ和~（１６０）Ｔｂ，得到纯放射性同位素~（１５３，１５９）Ｇｄ。以ＥＤＴＡ作排代剂，研究了柱比、乙酸铵浓度、排代剂酸度和浓度以及流速等各种工艺条件对分离效果的影响。结果表明，减小排代剂的流速，控制适当的谱带移动速度，使得在不同浓度排代剂条件下，均能得到良好的分离效果。

Abstract: STUDY ON SEPARATING AND PURIFYING~(153,159)Gd BY PRESSURIZED DISPLACEMENT CHROMATOGRAPHYChen Liquan;Xin Wenda;bong Changfa;Yue Sujun;Zhang Jin;Wang Qingmin(Modren Physics Department,Lanzhou University,Lanzhou 730000)Abstract:The separation and purification of~(153,159)Gd from~(152,154)Eu and~(160)Tb by the pressurized displacement chromatography is studied.The effects of several factors such as the column ratio,the concentration of NH_4 AC,pH and the concentration of EDTA and the flow rate are studied.The recovery and purity of~(153,159)Gd by this process is 92％and 99．9％respectively.Keywords:Pressurized displacement chromatography,~(153,159)Gd,~(152,154)Eu,~(160)Tb