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叙述了用TBP萃取色层法分离后,用水平式ICP-AES法测定U_3O_8中25种杂质元素的分析方法。U_3O_8样品转化为硝酸铀酰后,采用以TBP萃淋树脂为固定相、5mol/L HNO_3为流动相的萃取色层法使杂质元素与铀基体分离,杂质流出波用水平式ICP为激发光源的发射光谱分析法直接测定。取样0.3g,所有元素的测定下限在0.01～5ppm之间。方法的重加回收率在82～121%之间。相对标准偏差在±13%以内。
The analytical method for the determination of 25 kinds of impurity elements in U_3O_8 by horizontal ICP-AES after the separation by TBP extraction chromatography is described. U_3O_8 sample was converted to uranyl nitrate, using TBP extraction resin as the stationary phase, 5mol / L HNO_3 as the mobile phase extraction chromatography separation of impurity elements and uranium matrix, impurity outflow wave with horizontal ICP as the excitation light source Emission spectrometry direct determination. Sampling 0.3g, all elements of the lower limit of determination in the 0.01 ~ 5ppm. The recovery of the method was between 82 and 121%. The relative standard deviation is within ± 13%.