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Type: Artigo de periódico
Title: Effect Of Acetate On Ferrihydrite Crystallization
Author: Varela M.d.C.R.
Filho M.F.d.J.
Galembeck F.
Abstract: Mössbauer spectroscopy was used to follow the aging of ferrihydrite with different amounts of acetate, to achieve more crystalline products. Mössbauer 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-hematitic" effect of organic matter already detected in soils. © 1994 J.C. Baltzer AG, Science Publishers.
Editor: Baltzer Science Publishers, Baarn/Kluwer Academic Publishers
Rights: fechado
Identifier DOI: 10.1007/BF02074267
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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