Abstract
An X-ray fluorescence fusion technique involving 1:18 dilution was used for the determination of SIO2, Al2O3, total Fe as Fe2O3, MgO, CaO, K2O, TiO2, P2O5 and MnO in silicate rocks. Fusion of the sample with LiBO2 followed by grinding and pelletizing the fused bead prior to X-ray irradiation eliminates most of the matrix problems associated with X-ray fluorescence analysis. Values obtained by this method compare favorably with the preferred chemical values for seventeen international silicate rock standards.
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