[Determination of the valence change of copper concentrate ore sample during depositing by conventional X-ray fluorescence spectrometer].

The peak position and line shape of S Kalpha, S Kbeta satellite line, and the ratio of (S Kalpha / S Kbeta), (Cu Lalpha / Cu Kalpha), and (Fe Lalpha / Fe Kalpha) of copper concentrate samples with different depositing methods were determined by a conventional X-ray fluorescence spectrometer. It is concluded that the valence of S, Cu and Fe changed during depositing in accordance with the changes of the lines, Copper concentrate sample (main mine phase is chalcopyrite, containing a little pyrite) was oxidized apparently after 2 years depositing. Part of S2-, Cu+ and Fe2+ in the sample were oxidized to high valence, and the sulphur atom combined with oxygen atom. The oxidation of the sample was influenced markedly by the storing method.