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由于产地环境特征和生产方法不同,不同来源铀样品中的杂质元素含量会有所区别。铀样品的这一特征可作为材料来源的归因判据之一,应用于核取证分析。目前,杂质元素的分析测定方法主要采用电感耦合等离子体质谱法、辉光放电质谱法、原子发射光谱法,其中电感耦合等离子体质谱法应用最为广泛。本工作研究了UTEVA萃取色层法分离铀与杂质元素,使用电感耦合等离子体质谱对样品进行测量,计算得到了不同元素的回收率。
Due to the characteristics of origin and production methods, different sources of uranium impurity elements in the sample content will be different. This feature of uranium samples can be used as one of the criteria for attribution of material sources for nuclear forensics analysis. At present, the analytical methods for the determination of impurity elements mainly use inductively coupled plasma mass spectrometry, glow discharge mass spectrometry and atomic emission spectrometry, of which inductively coupled plasma mass spectrometry is the most widely used. In this work, uranium and impurity elements were separated by UTEVA extraction chromatography. The samples were measured by inductively coupled plasma mass spectrometry, and the recoveries of different elements were calculated.