介绍了用能量色散X射线荧光光谱(EDXRF)法测定载Pd - Al2O3小球Pd含量的分析方法.该方法在样品中定量加入内标元素Mo,再加入王水溶解载Pd - Al2O3小球上的Pd,制成滤纸试样片,用能量色散X射线荧光光谱仪测定其Pd含量.该方法简便、快速,测定载Pd - Al2O3小球Pd含量为30wt％～ 50wt％时,其测量结果的相对标准偏差不大于0.9％,检出率为98％～102％.该方法可通过调整加入内标元素Mo的量,扩大测定Pd含量的分析范围.%A simple, fast, and accurate method of determination the content of palladium of Pd - Al2O3 pellets by EDXRF was established. By added the internal standard element Mo quantitatively to the sample, dissolved Pd on the Pd Al2O3 pellets using aqua regia, and made filter paper sample, the content of Pd could be obtained Energy dispersive X - Ray Fluorescence Spectrometer. While the content of palladium between 30wt% ~ 50wt% of the sample, the relative standard deviation less than 0.9% and the relevance ratio between 98% -102%. The measuring range of this method can be adjusted by changing the content of Mo.
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