Determination of Major and Minor Components in Bauxite by X-ray Fluorescence Spectrometry with Fusion Sample Preparation

A method for the determination of major and minor components in imported and exported bauxites by X-ray fluorescence spectrometry with fusion sample preparation technique was developed. The matrix effect was eliminated using variable α coefficient method and spectral line overlap was also corrected. The calibration samples were artificially synthesized with high purity compounds. The method has been applied to the determination of SiO2, Fe2O3, Al2O3, CaO, MgO, K2O, P2O5 and TiO2 in national standard reference bauxite samples (GBW 07178 and GBW 07179). The results are in good agreement with certified values with recovery of 98.1%～111.0%.