Esca and Empa in the Analysis of Sulphides.
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The purpose of the work was to determine the dependence of parameters describing XPS and XES spectra of sulfur on physico-chemical properties of some sulfides. The discussion considers chemical shifts of spectra correlated to oxidation, hybridization, spin state of the metal, electronegativity and properties of the ligand field. FeS//2 (pyrite), ZnS (sphalerite) and BaSO//4 (barite) were the subject of investigation.