Abstract
Possibility to use XPS methods for observations of adsorption of xanthates on sulfides was demonstrated by measurements of XPS spectra of the main components C, O and S of ethyl xanthate molecules. A thin layer of superficial copper sulfide was used as the substrate. Use of monochromatized Al Kα exciting radiation was found to give sufficient resolution to allow selective tracing of the O 1s and C 1s signals originating from the adsorbed xanthate. Hence these lines can be used to study adsorption of ethyl xanthate on copper sulfide. Extension of the method to other xanthates and sulfides seems plausible, but requires careful studies of the binding energies of the components of the particular line used as the signal. Observations of spectra obtained after different sample preparation methods are presented as examples of the applicability of the method.
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