Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://dx.doi.org/10.1007/s11368-009-0157-y http://www.locus.ufv.br/handle/123456789/22446 |
Resumo: | Heavy metal lability, probably, is the most important isolated factor to cause toxicity in plants and organisms in soils. Sorption of heavy metals, in turn, affects directly the amount of their labile forms in soils. Therefore, to assess sorption and quantify labile forms of Cd, Cu, Ni, Pb, and Zn, adsorption and incubation studies were carried out.The adsorption experiment consisted of a 12×5×10 factorial design with 12 samples, five metals, and ten doses. An incubation experiment and metal extraction by cationic exchange resin in membrane form, with capacity to exchange 2.80 molc kg−1 dry resin, were conducted in samples from A and B horizons of six highly weathered soils from Minas Gerais, Brazil.The data from the adsorption experiment was fitted to nonlinear Langmuir and Freündlich models to give the b and k constants, which were used in a correlation study with soil properties. Cationic resin was used to extract the labile metal forms of heavy metals, and low concentrations of the labile forms were determined for all metals and soils in all incubation times.Factors that influenced Langmuir maximum adsorption and Freündlich buffer capacity were pH and CEC, as chemical characteristics, and goethite or hematite contents, as mineralogical attributes. Negative charge density and hydrolyzed species formation may have been main factors related to maximum adsorption and buffer capacity for most heavy metals. Low contents of labile metal forms obtained by cationic resin extraction were attributed to high intensity of metal adsorption reaction onto soil colloids. Greatest lability was found in soils with mineralogy dominated by gibbsite and kaolinite, while lowest metal lability was determined in soils with higher hematite and goethite contents. Due to their specificities, tropical soils should have more research toward the understanding of the relationship soil vulnerability to heavy metals pollution and availability/lability of these important toxic substances in the environment. |
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Fontes, Maurício Paulo FerreiraSantos, Guilherme Cadinelli dos2018-10-31T18:38:29Z2018-10-31T18:38:29Z2009-11-2016147480http://dx.doi.org/10.1007/s11368-009-0157-yhttp://www.locus.ufv.br/handle/123456789/22446Heavy metal lability, probably, is the most important isolated factor to cause toxicity in plants and organisms in soils. Sorption of heavy metals, in turn, affects directly the amount of their labile forms in soils. Therefore, to assess sorption and quantify labile forms of Cd, Cu, Ni, Pb, and Zn, adsorption and incubation studies were carried out.The adsorption experiment consisted of a 12×5×10 factorial design with 12 samples, five metals, and ten doses. An incubation experiment and metal extraction by cationic exchange resin in membrane form, with capacity to exchange 2.80 molc kg−1 dry resin, were conducted in samples from A and B horizons of six highly weathered soils from Minas Gerais, Brazil.The data from the adsorption experiment was fitted to nonlinear Langmuir and Freündlich models to give the b and k constants, which were used in a correlation study with soil properties. Cationic resin was used to extract the labile metal forms of heavy metals, and low concentrations of the labile forms were determined for all metals and soils in all incubation times.Factors that influenced Langmuir maximum adsorption and Freündlich buffer capacity were pH and CEC, as chemical characteristics, and goethite or hematite contents, as mineralogical attributes. Negative charge density and hydrolyzed species formation may have been main factors related to maximum adsorption and buffer capacity for most heavy metals. Low contents of labile metal forms obtained by cationic resin extraction were attributed to high intensity of metal adsorption reaction onto soil colloids. Greatest lability was found in soils with mineralogy dominated by gibbsite and kaolinite, while lowest metal lability was determined in soils with higher hematite and goethite contents. Due to their specificities, tropical soils should have more research toward the understanding of the relationship soil vulnerability to heavy metals pollution and availability/lability of these important toxic substances in the environment.engJournal of Soils and Sedimentsv. 10, n. 4, p. 774– 786, mai. 2010Springer-Verlag 2009info:eu-repo/semantics/openAccessAdsorption/desorptionCationic exchange resinFreündlichIsothermsLangmuirTropical soilscLability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soilsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdftexto completoapplication/pdf232558https://locus.ufv.br//bitstream/123456789/22446/1/artigo.pdf4ed6c13198a7ab680cddd4293d312f01MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/22446/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/224462018-10-31 16:14:56.88oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-10-31T19:14:56LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
title |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
spellingShingle |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils Fontes, Maurício Paulo Ferreira Adsorption/desorption Cationic exchange resin Freündlich Isotherms Langmuir Tropical soilsc |
title_short |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
title_full |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
title_fullStr |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
title_full_unstemmed |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
title_sort |
Lability and sorption of heavy metals as related to chemical, physical, and mineralogical characteristics of highly weathered soils |
author |
Fontes, Maurício Paulo Ferreira |
author_facet |
Fontes, Maurício Paulo Ferreira Santos, Guilherme Cadinelli dos |
author_role |
author |
author2 |
Santos, Guilherme Cadinelli dos |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Fontes, Maurício Paulo Ferreira Santos, Guilherme Cadinelli dos |
dc.subject.pt-BR.fl_str_mv |
Adsorption/desorption Cationic exchange resin Freündlich Isotherms Langmuir Tropical soilsc |
topic |
Adsorption/desorption Cationic exchange resin Freündlich Isotherms Langmuir Tropical soilsc |
description |
Heavy metal lability, probably, is the most important isolated factor to cause toxicity in plants and organisms in soils. Sorption of heavy metals, in turn, affects directly the amount of their labile forms in soils. Therefore, to assess sorption and quantify labile forms of Cd, Cu, Ni, Pb, and Zn, adsorption and incubation studies were carried out.The adsorption experiment consisted of a 12×5×10 factorial design with 12 samples, five metals, and ten doses. An incubation experiment and metal extraction by cationic exchange resin in membrane form, with capacity to exchange 2.80 molc kg−1 dry resin, were conducted in samples from A and B horizons of six highly weathered soils from Minas Gerais, Brazil.The data from the adsorption experiment was fitted to nonlinear Langmuir and Freündlich models to give the b and k constants, which were used in a correlation study with soil properties. Cationic resin was used to extract the labile metal forms of heavy metals, and low concentrations of the labile forms were determined for all metals and soils in all incubation times.Factors that influenced Langmuir maximum adsorption and Freündlich buffer capacity were pH and CEC, as chemical characteristics, and goethite or hematite contents, as mineralogical attributes. Negative charge density and hydrolyzed species formation may have been main factors related to maximum adsorption and buffer capacity for most heavy metals. Low contents of labile metal forms obtained by cationic resin extraction were attributed to high intensity of metal adsorption reaction onto soil colloids. Greatest lability was found in soils with mineralogy dominated by gibbsite and kaolinite, while lowest metal lability was determined in soils with higher hematite and goethite contents. Due to their specificities, tropical soils should have more research toward the understanding of the relationship soil vulnerability to heavy metals pollution and availability/lability of these important toxic substances in the environment. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-11-20 |
dc.date.accessioned.fl_str_mv |
2018-10-31T18:38:29Z |
dc.date.available.fl_str_mv |
2018-10-31T18:38:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11368-009-0157-y http://www.locus.ufv.br/handle/123456789/22446 |
dc.identifier.issn.none.fl_str_mv |
16147480 |
identifier_str_mv |
16147480 |
url |
http://dx.doi.org/10.1007/s11368-009-0157-y http://www.locus.ufv.br/handle/123456789/22446 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
v. 10, n. 4, p. 774– 786, mai. 2010 |
dc.rights.driver.fl_str_mv |
Springer-Verlag 2009 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Springer-Verlag 2009 |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Journal of Soils and Sediments |
publisher.none.fl_str_mv |
Journal of Soils and Sediments |
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