Abstract： This paper describes X-ray fluorescence spectrometric method of impurity elements in aluminum. The selection and dosage of assistant agent propylene glycol for the pressed powder pellet method, as well as alumina particle size’s effects on X-ray fluorescence intensity were studied. Experiments showed that, when the particle size was smaller than 40 μm, the size effect weakened;good sample pellet was prepared with 10.0 g of alumina sample plus two drops of propylene glycot ground for 40 s and then packaged with boric acid before pellet pressing.Calibration curve were founded using a series of standard samples of alumina. Eleven elements in each sample were determined. The RSD of SiO2,Fe2O3,Na2O,K2O,CaO,Ga2O3,ZnO were smaller than 8.0%; the RSD of P2O5,TiO2,V2O5,Cr2O3 were smaller than 10% when their content was larger than three times of the detection limit; smaller than 17% when their content was smaller than three times of the detection limit. The method has been applied to the determination of those elements in alumina reference materials, and the results for these elements were in good agreement with certified values.
［4］ 陈泓钧.氧化铝的X射线荧光光谱分析方法研讨［J］. 光谱实验室（Chinese Journal of Spectroscopy Laboratory）, 2008, 25(6):1273-1275.
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［6］ Peschel B U, Pepponi, G, Jokubonis C, et al. Direct analysis of Al2O3 powders by total reflection X-ray fluorescence spectrometry［J］.Analytical and Bioanalytical Chemistry, 2005,(382), 1958-1964.
