Artículo
Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
Machado, W.; Borrelli, Natalia Lorena
; Ferreira, T. O.; Marques, A. G. B.; Osterrieth, Margarita Luisa; Guizan, C.
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Fecha de publicación:
01/2014
Editorial:
Pergamon-Elsevier Science Ltd.
Revista:
Marine Pollution Bulletin
ISSN:
0025-326X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The degree of iron pyritization (DOP) and degree of trace metal pyritization (DTMP) were evaluated in mangrove soil profiles from an estuarine area located in Rio de Janeiro (SE Brazil). The soil pH was negatively correlated with redox potential (Eh) and positively correlated with DOP and DTMP of some elements (Mn, Cu and Pb), suggesting that pyrite oxidation generated acidity and can affect the importance of pyrite as a trace metal-binding phase, mainly in response to spatial variability in tidal flooding. Besides these aerobic oxidation effects, results from a sequential extraction analyses of reactive phases evidenced that Mn oxidized phase consumption in reaction with pyrite can be also important to determine the pyritization of trace elements. Cumulative effects of these aerobic and anaerobic oxidation processes were evidenced as factors affecting the capacity of mangrove soils to act as a sink for trace metals through pyritization processes.
Palabras clave:
Metals
,
Pyritization
,
Sequential Extraction
,
Redox Processes
,
Pyrite Oxidation
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IIMYC)
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Citación
Machado, W.; Borrelli, Natalia Lorena; Ferreira, T. O.; Marques, A. G. B.; Osterrieth, Margarita Luisa; et al.; Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes; Pergamon-Elsevier Science Ltd.; Marine Pollution Bulletin; 79; 1-2; 1-2014; 365-370
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