Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment

Copper bioavailability, specially to plants, is strongly dependent on its chemical form, as for most metals. Copper-contaminated soil can be treated in situ by the addition of minerals such as Na-bentonite, which mixed with surface soil, can transform this pollutant to non-bioavailable forms. In thi...

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Autores principales:	Montenegro, Andrea Constanza, Ferreyroa, Gisele Veronica, Tudino, Mabel Beatriz, Molina, Fernando Victor
Publicado:	2015
Materias:	Availability Bentonite Heavy Metals Sequential Selective Extraction Soil Pollution Biochemistry Copper Extraction Heavy metals Metals Minerals Pollution Remediation Sodium Soils Copper bioavailability Copper speciations Copper-contaminated Exchangeable fraction Metal speciation Selective sequential extractions Sequential selective extractions Sodium bentonite Soil pollution bentonite copper organic matter sodium clay soil heavy metal pristine environment soil amendment soil pollution speciation (chemistry) Article bioavailability bioremediation clay concentration (parameters) evolution extraction selective sequential extraction soil analysis soil copper speciation time evolution
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00496979_v226_n9_p226_Montenegro http://hdl.handle.net/20.500.12110/paper_00496979_v226_n9_p226_Montenegro
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00496979_v226_n9_p226_Montenegro
record_format	dspace
spelling	paper:paper_00496979_v226_n9_p226_Montenegro2023-06-08T15:05:52Z Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment Montenegro, Andrea Constanza Ferreyroa, Gisele Veronica Tudino, Mabel Beatriz Molina, Fernando Victor Availability Bentonite Heavy Metals Sequential Selective Extraction Soil Pollution Availability Bentonite Biochemistry Copper Extraction Heavy metals Metals Minerals Pollution Remediation Sodium Soils Copper bioavailability Copper speciations Copper-contaminated Exchangeable fraction Metal speciation Selective sequential extractions Sequential selective extractions Sodium bentonite Soil pollution bentonite copper organic matter sodium bentonite clay soil copper heavy metal pristine environment soil amendment soil pollution speciation (chemistry) Article bioavailability bioremediation clay concentration (parameters) evolution extraction selective sequential extraction soil amendment soil analysis soil copper speciation soil pollution time evolution Copper bioavailability, specially to plants, is strongly dependent on its chemical form, as for most metals. Copper-contaminated soil can be treated in situ by the addition of minerals such as Na-bentonite, which mixed with surface soil, can transform this pollutant to non-bioavailable forms. In this work, shelter experiments were conducted to study the time evolution of Cu speciation, in pristine soil as well as in amended one. A selective sequential extraction method was employed to determine the metal speciation in the samples. The results show that the major metal fraction is the organic matter-bound one, whereas the exchangeable fraction is very low, even the first day after Cu addition. The time evolution shows a slow decrease of the organic-bound Cu and a corresponding increase of the most stable mineral fractions. With the addition of Na-bentonite to copper-contaminated soil, the most stable mineral fractions increase whereas the organic-bound one decreases, showing essentially similar time dependence of the several metal fractions. Sodium bentonite could be effectively used for remediation of soils polluted with Cu. © 2015 Springer International Publishing Switzerland. Fil:Montenegro, A.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ferreyroa, G.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tudino, M.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00496979_v226_n9_p226_Montenegro http://hdl.handle.net/20.500.12110/paper_00496979_v226_n9_p226_Montenegro
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Availability Bentonite Heavy Metals Sequential Selective Extraction Soil Pollution Availability Bentonite Biochemistry Copper Extraction Heavy metals Metals Minerals Pollution Remediation Sodium Soils Copper bioavailability Copper speciations Copper-contaminated Exchangeable fraction Metal speciation Selective sequential extractions Sequential selective extractions Sodium bentonite Soil pollution bentonite copper organic matter sodium bentonite clay soil copper heavy metal pristine environment soil amendment soil pollution speciation (chemistry) Article bioavailability bioremediation clay concentration (parameters) evolution extraction selective sequential extraction soil amendment soil analysis soil copper speciation soil pollution time evolution
spellingShingle	Availability Bentonite Heavy Metals Sequential Selective Extraction Soil Pollution Availability Bentonite Biochemistry Copper Extraction Heavy metals Metals Minerals Pollution Remediation Sodium Soils Copper bioavailability Copper speciations Copper-contaminated Exchangeable fraction Metal speciation Selective sequential extractions Sequential selective extractions Sodium bentonite Soil pollution bentonite copper organic matter sodium bentonite clay soil copper heavy metal pristine environment soil amendment soil pollution speciation (chemistry) Article bioavailability bioremediation clay concentration (parameters) evolution extraction selective sequential extraction soil amendment soil analysis soil copper speciation soil pollution time evolution Montenegro, Andrea Constanza Ferreyroa, Gisele Veronica Tudino, Mabel Beatriz Molina, Fernando Victor Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment
topic_facet	Availability Bentonite Heavy Metals Sequential Selective Extraction Soil Pollution Availability Bentonite Biochemistry Copper Extraction Heavy metals Metals Minerals Pollution Remediation Sodium Soils Copper bioavailability Copper speciations Copper-contaminated Exchangeable fraction Metal speciation Selective sequential extractions Sequential selective extractions Sodium bentonite Soil pollution bentonite copper organic matter sodium bentonite clay soil copper heavy metal pristine environment soil amendment soil pollution speciation (chemistry) Article bioavailability bioremediation clay concentration (parameters) evolution extraction selective sequential extraction soil amendment soil analysis soil copper speciation soil pollution time evolution
description	Copper bioavailability, specially to plants, is strongly dependent on its chemical form, as for most metals. Copper-contaminated soil can be treated in situ by the addition of minerals such as Na-bentonite, which mixed with surface soil, can transform this pollutant to non-bioavailable forms. In this work, shelter experiments were conducted to study the time evolution of Cu speciation, in pristine soil as well as in amended one. A selective sequential extraction method was employed to determine the metal speciation in the samples. The results show that the major metal fraction is the organic matter-bound one, whereas the exchangeable fraction is very low, even the first day after Cu addition. The time evolution shows a slow decrease of the organic-bound Cu and a corresponding increase of the most stable mineral fractions. With the addition of Na-bentonite to copper-contaminated soil, the most stable mineral fractions increase whereas the organic-bound one decreases, showing essentially similar time dependence of the several metal fractions. Sodium bentonite could be effectively used for remediation of soils polluted with Cu. © 2015 Springer International Publishing Switzerland.
author	Montenegro, Andrea Constanza Ferreyroa, Gisele Veronica Tudino, Mabel Beatriz Molina, Fernando Victor
author_facet	Montenegro, Andrea Constanza Ferreyroa, Gisele Veronica Tudino, Mabel Beatriz Molina, Fernando Victor
author_sort	Montenegro, Andrea Constanza
title	Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment
title_short	Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment
title_full	Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment
title_fullStr	Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment
title_full_unstemmed	Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment
title_sort	copper speciation in soil: time evolution and effect of clay amendment
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00496979_v226_n9_p226_Montenegro http://hdl.handle.net/20.500.12110/paper_00496979_v226_n9_p226_Montenegro
work_keys_str_mv	AT montenegroandreaconstanza copperspeciationinsoiltimeevolutionandeffectofclayamendment AT ferreyroagiseleveronica copperspeciationinsoiltimeevolutionandeffectofclayamendment AT tudinomabelbeatriz copperspeciationinsoiltimeevolutionandeffectofclayamendment AT molinafernandovictor copperspeciationinsoiltimeevolutionandeffectofclayamendment
_version_	1768544544076333056

Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment

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