REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT

Samples of sediment from Estero Rungue, north of Santiago, were analyzed during January 2007. The studied zone is affected by acid contamination. Analysis of the sediment by XRD detected the presence of rozenite (FeSO4-4H2O) and gypsum (CaSO4-2H2O). The experiments were carried out according to the...

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Autores principales:	ROCCO,M, RUBIO,MARÍA. A
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2009
Materias:	Trace metals sediments sequential extraction sulfates
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300025
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spelling	oai:scielo:S0717-970720090003000252010-09-06REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMTROCCO,MRUBIO,MARÍA. A Trace metals sediments sequential extraction sulfates Samples of sediment from Estero Rungue, north of Santiago, were analyzed during January 2007. The studied zone is affected by acid contamination. Analysis of the sediment by XRD detected the presence of rozenite (FeSO4-4H2O) and gypsum (CaSO4-2H2O). The experiments were carried out according to the criterion estabhshed for the first Step of the sequential extraction proposed by the SMT, using Ca, Cu, Fe, Ni and Zn sulfates in the form of MxSO4áH2O as a model sediment. The results suggest that it is possible to extract up to -99% of the sulfates because of the low pH (~3). Analysis of the sediment by XRD before and after the first Step of the sequential extraction showed that the sulfates disappear after the treatment, extending the interpretation of the first Step of the sequential extraction to elements that are interchangeable, adsorbed on carbonates, and present as sulfates.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.54 n.3 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300025en10.4067/S0717-97072009000300025
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Trace metals sediments sequential extraction sulfates
spellingShingle	Trace metals sediments sequential extraction sulfates ROCCO,M RUBIO,MARÍA. A REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT
description	Samples of sediment from Estero Rungue, north of Santiago, were analyzed during January 2007. The studied zone is affected by acid contamination. Analysis of the sediment by XRD detected the presence of rozenite (FeSO4-4H2O) and gypsum (CaSO4-2H2O). The experiments were carried out according to the criterion estabhshed for the first Step of the sequential extraction proposed by the SMT, using Ca, Cu, Fe, Ni and Zn sulfates in the form of MxSO4áH2O as a model sediment. The results suggest that it is possible to extract up to -99% of the sulfates because of the low pH (~3). Analysis of the sediment by XRD before and after the first Step of the sequential extraction showed that the sulfates disappear after the treatment, extending the interpretation of the first Step of the sequential extraction to elements that are interchangeable, adsorbed on carbonates, and present as sulfates.
author	ROCCO,M RUBIO,MARÍA. A
author_facet	ROCCO,M RUBIO,MARÍA. A
author_sort	ROCCO,M
title	REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT
title_short	REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT
title_full	REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT
title_fullStr	REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT
title_full_unstemmed	REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT
title_sort	reinterpretation of the first step of the sequential extraction proposed by the smt
publisher	Sociedad Chilena de Química
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300025
work_keys_str_mv	AT roccom reinterpretationofthefirststepofthesequentialextractionproposedbythesmt AT rubiomariaa reinterpretationofthefirststepofthesequentialextractionproposedbythesmt
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REINTERPRETATION OF THE FIRST STEP OF THE SEQUENTIAL EXTRACTION PROPOSED BY THE SMT

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