Analysis of Iron-Bearing Clay Minerals by Electron Spectroscopy for Chemical Analysis (ESCA)*
| Autor: | J. W. Stucki, Charles B. Roth, W. E. Baitinger |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Chemistry
Inorganic chemistry Binding energy Soil Science chemistry.chemical_element Nontronite Electron engineering.material Oxygen Electron spectroscopy Spectral line Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) engineering Clay minerals Biotite Water Science and Technology |
| Zdroj: | Clays and Clay Minerals. 24:289-292 |
| ISSN: | 0009-8604 |
| DOI: | 10.1346/ccmn.1976.0240603 |
| Popis: | Nontronite and biotite were analyzed by Electron Spectroscopy for Chemical Analysis (ESCA). Both minerals yielded ESCA spectra with well-defined peaks and the elements identified by the ESCA spectra were in good agreement with the molecular formulas. High resolution scans were made of the iron (2p3/2) and oxygen (1s) electron binding energies for oxidized and reduced forms of nontronite and biotite. Binding energies for Fe3+ were observed at 711.8 eV in dithionite-reduced nontronite and in oxidized biotite. Peaks for Fe2+ occurred at 710.0 eV for unaltered biotite, at 709 eV for oxidized biotite and at 708.6 eV for hydrazine-reduced and dithionite-reduced nontronite. The oxygen (1s) peak for unaltered nontronite was skewed to the high energy side of the 530.6 eV maximum, but became more symmetrical as the Fe2+ content increased. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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