X-Ray Fluorescence Spectroscopy of Metal Sulfides

Abstract
The S Kα spectra of the sulfur compounds were measured. The S Kα energies of metal sulfides were less than that of the pure sulfur in accordance with the theoretical prediction. The S Kα shift for CaS (−0.239 eV) is the largest among those of metal sulfides examined in this study. In the sulfur+selenium binary mixtures, the S Kα energy goes more negative than that of sulfur with increasing the selenium content. These results can be interpreted in terms of the electronegativity of the counter atoms.