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Geometry of sorbed arsenate on ferrihydrite and crystalline FeOOH: Re-evaluation of EXAFS results and topological factors in predicting sorbate geometry, and evidence for monodentate complexes

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Glenn A. Waychunas, James A. Davis, and Christopher C. Fuller, 1995, Geometry of sorbed arsenate on ferrihydrite and crystalline FeOOH: Re-evaluation of EXAFS results and topological factors in predicting sorbate geometry, and evidence for monodentate complexes: Geochimica et Cosmochimica Acta, v. 59, iss. 17.

Summary

Manceau's (1995) reinterpretation of some of our EXAFS results (Waychunas et al., 1993) has been analyzed using both old and newly collected data in an attempt to clarify the nature of proposed monodentate and edge-sharing bidentate arsenate complexes on the ferrihydrite surface. It is shown that EXAFS analysis utilizing data with sufficient k-range does indicate the presence of relatively short AsFe bonds, suggestive of an edge-sharing complex as indicated by Manceau (1995). However, a variety of data analysis factors and crystal chemical considerations create doubt in this assignment. Most significantly, X-ray scattering data collected on a sample of ferrihydrite with a large density of sorbed arsenate, which should show a substantial [...]

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Type Scheme Key
local-index unknown 70185381
local-pk unknown 70185381
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1016/0016-7037(95)00276-6
series unknown Geochimica et Cosmochimica Acta

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journalGeochimica et Cosmochimica Acta
parts
typevolume
value59
typeissue
value17
languageEnglish
citationTypeArticle

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