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乏燃料后处理流程中广泛存在着大量铀与微量裂变元素共存情况下的分析测定问题,对这种体系通常采用一种或多种化学分离相结合或将样品稀释不同倍数进行多次测量,分析过程操作繁琐,误差较大。因此,建立同时测定一种大量铀及微量裂变元素的方法十分必要。电感耦合等离子体质谱(ICP-MS)能实现对周期表中75%以上元素的测定,满足测定裂变元素多样性的需求。常规ICP-MS主要用于微量元素的测定,元素含量过高会引起检测器饱和。本研
In the post-treatment flow of spent fuel, there are a lot of problems in the analysis and determination under the coexistence of a large amount of uranium and trace fission elements. In this system, one or more chemical separations are usually used or multiple dilutions of the sample are measured and analyzed repeatedly Tedious process, the error is larger. Therefore, the establishment of simultaneous determination of a large amount of uranium and trace fission elements of the method is necessary. Inductively coupled plasma mass spectrometry (ICP-MS) enables the determination of more than 75% of the elements in the periodic table to meet the need to determine the diversity of fissile elements. Conventional ICP-MS is mainly used for the determination of trace elements, the element content is too high can cause detector saturation. This research