二元比例-X射线荧光光谱法测定模拟MOX燃料中U和Ce含量

Determination of U and Ce in Simulative Mixed Oxide Fuel Samples by Binary Ratio and X-Ray Fluorescence Spectrometry

建立了二元比例 X射线荧光光谱法定量测定模拟MOX燃料中U和Ce含量的方法。采用粉末压片制样技术,样品制备过程快速简便。校准曲线的回归系数(r)为 0.999 5;铀测量结果的相对标准偏差(sr)为 0.2%,铈测量结果的相对标准偏差(sr)为1.8%,满足了模拟MOX燃料元件测试的要求。

A quantitative method for determination of U and Ce in simulative MOX fuel samples by binary intensity ratio and X-ray fluorescence spectrometry is studied. Pressed powder pellet sample preparation is adopted. The pretreatment of the sample is fast and simple. The mutual interference of the two elements is eliminated efficiently by intensity ratio technique. The relative standard deviation (sr) of U and Ce is 0.2% and 1.8%, respectively.