【摘要】 <正> X射线荧光光谱法则定稀土中的单一稀土元素具有独特的优点,在国内外已有不少报导。本文应用滤纸片法测定混合稀土中十五个稀土元素,并对谱线干扰及滤纸片法中引起测量误差的一些问题进行了讨论。结果计算采用归一法,消除了试样量不一致带来的误差。本法具有制样简便,试样用量少和分析结果精度较高等优点。实验部分 1.采用民主德国产VRA-20型全自动X射线光谱仪。 2.美国Crommeco公司的C-10计算机。更多还原

【Abstract】 In this method the sample preparation is very simple, just to drop the sample solution onto a circular piece of filter paper, after drying it is ready for analysis. For a single analysis of all 15 rare earth elements, only 1 to 2 mg of sample is needed and the time taken is 10 min. The analytical results are not affected by sample weight, provided the normalization composition methos is applied. The method can be applied to the determination of RE in the intermediate product of the separation process employing solvent extraction or ion-exchange technique with satiafaetory precision.更多还原