TBP-TEVA萃取色层分离-同位素稀释质谱法测定后处理铀产品中的痕量钚  

Determination of Trace Plutonium in Reprocessed Uranium Product by TBP-TEVA Column Extraction Separation-isotope Dilution ICP-MS

作　　者：金花[1] 徐琛[2] 应浙聪[1] 赵胜洋[1] 苏玉兰[1] 

机构地区：[1]中国原子能科学研究院,北京102413 [2]环境保护部核与辐射安全中心,北京100082

出　　处：《核科学与工程》2013年第3期293-298,共6页Nuclear Science and Engineering

摘　　要：建立了有效分离与测定核燃料后处理铀产品中痕量钚的方法。采用磷酸三丁酯(TBP)-三烷基甲基胺盐(烷基为C8-C10)(TEVA)萃取色层法进行分离,应用242 Pu稀释剂,通过同位素稀释质谱法(IDICP-MS)准确测量钚的含量。模拟样品的分离与测定结果表明,该方法能够有效实现铀产品中钚的分析,铀的去污因子大于106,可以满足核燃料后处理铀产品和铀线尾端样品中痕量钚的分析要求。Abstract. An efficient analysis method for trace plutonium in reprocessed uranium product is developed, based on two-column chromatographic extraction using TBP resin and TEVA resin. By spiking with 242pu, isotope dilution ICP-MS is applied to measure 242pu and 240Pu. The results show that determination of plutonium in reprocessed uranium product with above-mentioned separation and measurement method meet the quality control requirement for uranium product in nuclear fuel reprocessing. The decontamination factor of uranium is above 106.

关 键 词：铀产品 钚 TBP—TEVA 同位素稀释质谱法（ID-ICP-MS） 

分 类 号：O657.63[理学—分析化学]