【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^１６０Ｔｂ，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。更多还原

【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 NH₄ 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.更多还原