Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes

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 so...

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Guardado en:
Detalles Bibliográficos
Publicado: 2013
Materias:
Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0025326X_v_n_p_Machado
http://hdl.handle.net/20.500.12110/paper_0025326X_v_n_p_Machado
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0025326X_v_n_p_Machado
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spelling paper:paper_0025326X_v_n_p_Machado2023-06-08T14:53:08Z Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes Metals Pyrite oxidation Pyritization Redox processes Sequential extraction 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. © 2013 Elsevier Ltd. All rights reserved. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0025326X_v_n_p_Machado http://hdl.handle.net/20.500.12110/paper_0025326X_v_n_p_Machado
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
spellingShingle Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
topic_facet Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
description 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. © 2013 Elsevier Ltd. All rights reserved.
title Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
title_short Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
title_full Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
title_fullStr Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
title_full_unstemmed Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
title_sort trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0025326X_v_n_p_Machado
http://hdl.handle.net/20.500.12110/paper_0025326X_v_n_p_Machado
_version_ 1768543312285794304

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