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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/12948

Title: Effect of acetate on ferrihydrite crystallization
Other Titles: Hyperfine Interactions
Authors: Varela, Maria do Carmo Rangel Santos
Jesus Filho, Milton Francisco de
Galembeck, Fernando
Issue Date: 1994
Publisher: Hyperfine Interactions
Abstract: M6ssbauer spectroscopy was used to follow the aging of ferrilaydrite with different amounts of acetate, to achieve more crystalline products. M6ssbauer spectra of fresh samples did not show any magnetic components. After two years aging, the solids presented crystalline fractions. Hematite formation was inhibited as acetate content increased in solids. For an acetate/ iron molar ratio equal to 0.63 goethite was formed instead of hematite. X-ray diffraction confirmed these results. This work shows that synthetic samples can be used for elucidating the "anti-bematitic" effect of organic matter already detected in soils.
Description: Texto completo. Acesso restrito. p. 161-167
URI: http://www.repositorio.ufba.br/ri/handle/ri/12948
ISSN: 0304-3843
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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