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

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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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Autores principales: Machado, W., Borrelli, N.L., Ferreira, T.O., Marques, A.G.B., Osterrieth, M., Guizan, C.
Formato: INPR
Lenguaje:English
Materias:
Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
Acceso en línea: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 todo:paper_0025326X_v_n_p_Machado
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spelling todo:paper_0025326X_v_n_p_Machado2023-10-03T14:36:04Z Trace metal pyritization variability in response to mangrove soil aerobic and anaerobic oxidation processes Machado, W. Borrelli, N.L. Ferreira, T.O. Marques, A.G.B. Osterrieth, M. Guizan, C. 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. INPR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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)
language English
orig_language_str_mv English
topic Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
spellingShingle Metals
Pyrite oxidation
Pyritization
Redox processes
Sequential extraction
Machado, W.
Borrelli, N.L.
Ferreira, T.O.
Marques, A.G.B.
Osterrieth, M.
Guizan, C.
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.
format INPR
author Machado, W.
Borrelli, N.L.
Ferreira, T.O.
Marques, A.G.B.
Osterrieth, M.
Guizan, C.
author_facet Machado, W.
Borrelli, N.L.
Ferreira, T.O.
Marques, A.G.B.
Osterrieth, M.
Guizan, C.
author_sort Machado, W.
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
url http://hdl.handle.net/20.500.12110/paper_0025326X_v_n_p_Machado
work_keys_str_mv AT machadow tracemetalpyritizationvariabilityinresponsetomangrovesoilaerobicandanaerobicoxidationprocesses
AT borrellinl tracemetalpyritizationvariabilityinresponsetomangrovesoilaerobicandanaerobicoxidationprocesses
AT ferreirato tracemetalpyritizationvariabilityinresponsetomangrovesoilaerobicandanaerobicoxidationprocesses
AT marquesagb tracemetalpyritizationvariabilityinresponsetomangrovesoilaerobicandanaerobicoxidationprocesses
AT osterriethm tracemetalpyritizationvariabilityinresponsetomangrovesoilaerobicandanaerobicoxidationprocesses
AT guizanc tracemetalpyritizationvariabilityinresponsetomangrovesoilaerobicandanaerobicoxidationprocesses
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