Abstract：After the sample was melted with mixed flux (Li2B4O7-LiBO2-LiF), seventeen major and minor components in manganese ore, including Mn, TFe, SiO2, Al2O3, CaO, MgO, K2O, Na2O, TiO2, P, S, BaO, Cu, Co, Ni, V and As, were determined by X-ray fluorescence spectrometry. S and As could be converted to stable salt during pre-oxidation with NH4NO3 as oxidizing agent and Li2CO3 as protective agent. Consequently, the volatilization loss of S and As in sample preparation by fusion could be prevented. Cr2O3 was added and used as internal standard for Mn to eliminate the matrix effect on the determination of Mn. The precision test was performed with manganese ore synthetic reference samples. The relative standard deviation (RSD, n=12) was less than 10%. The accuracy test was conducted with manganese ore reference samples and synthetic samples. The results were consistent with the certified values and those obtained by wet method.
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