【作者】 王玉凤； 凡金龙； 樊懋； 翟秀芳； 代义华； 康泰； 汪伟； 白涛； 刘志超；

【Author】 WANG Yu-feng;FAN Jin-long;FAN Mao;ZHAI Xiu-fang;DAI Yi-hua;KANG Tai;WANG Wei;BAI Tao;LIU Zhi-chao;Northwest Institute of Nuclear Technology;

【机构】 西北核技术研究所；

【摘要】 镅与锔的相互分离对于镅锔同位素放化分析具有重要意义。本工作以铋酸钠同时作为氧化剂和吸附剂,结合HDEHP和DGA萃取色层,建立了镅与锔高效分离方法;研究了铋酸钠色层柱流速、酸浓度等因素对镅与锔分离的影响,以及HDEHP树脂和DGA树脂对铋、钠的去污行为,确立了优化的分离条件;推荐了三柱连续色层分离镅与锔的流程。镅和锔的回收率分别高达91%和95%,镅锔相互间的去污因子优于1×10~2。该方法有望应用于α能谱法和质谱法对镅锔同位素的准确测量分析。更多还原

【Abstract】 Separation and purification of americium and curium was of great significance for their isotopic analysis by a-spectrometry or mass spectrometry.In this work,a method based on the combination of oxidation and extraction chromatography was proposed.As the oxidant and adsorbent,sodium bismuth was applied to oxidize Am（Ⅲ） to hexavalent and adsorb trivalent curium to realize their mutual separation.The separation conditions including column flow rate and the concentration of nitric acid of NaBiO₃ column were optimized,and the separation conditions on HDEHP resin and DGA resin columns for the further removal of bismuth and sodium from the Am and Cm were explored.Finally,an efficient procedure for the separation and purification of Am and Cm was established.The results showed that the recoveries of Am and Cm were 91 % and 95% separately,and the decontamination factors of each other were more than 1×10².This method was hopefully applied in the analysis of Am and Cm using a spectrometry and ICP-MS.更多还原