Advances in,and applications of,X-ray photoelectron spectroscopy (ESCA) in mineralogy and geochemistry |
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| Authors: | G.M. Bancroft J.R. Brown W.S. Fyfe |
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| Affiliation: | 1. Department of Chemistry, The University of Western Ontario, London, Ont., N6A 5B7 Canada;2. Department of Geology, The University of Western Ontario, London, Ont., N6A 5B7 Canada |
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| Abstract: | The important uses of X-ray photoelectron spectroscopy (XPS or ESCA) in mineralogy and geochemistry are described. Crystal chemical, oxidation state and chemical bonding information can be obtained from the chemical shifts of the observed peaks. The high surface sensitivity of ESCA enables detection of 0.01 of a monolayer for many ions on mineral surfaces. ESCA is extremely useful for monitoring adsorption, desorption, dissolution and exchange reactions on mineral surfaces. Future improvements in intensity and resolution will greatly enhance the crystal chemical applications of ESCA. |
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