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...
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00496979_v226_n9_p226_Montenegro |
| Aporte de: |
| id |
todo:paper_00496979_v226_n9_p226_Montenegro |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_00496979_v226_n9_p226_Montenegro2023-10-03T14:52:43Z Copper Speciation in Soil: Time Evolution and Effect of Clay Amendment Montenegro, A.C. Ferreyroa, G.V. Parolo, M.E. Tudino, M.B. Lavado, R.S. Molina, F.V. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, A.C. Ferreyroa, G.V. Parolo, M.E. Tudino, M.B. Lavado, R.S. Molina, F.V. 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. |
| format |
JOUR |
| author |
Montenegro, A.C. Ferreyroa, G.V. Parolo, M.E. Tudino, M.B. Lavado, R.S. Molina, F.V. |
| author_facet |
Montenegro, A.C. Ferreyroa, G.V. Parolo, M.E. Tudino, M.B. Lavado, R.S. Molina, F.V. |
| author_sort |
Montenegro, A.C. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_00496979_v226_n9_p226_Montenegro |
| work_keys_str_mv |
AT montenegroac copperspeciationinsoiltimeevolutionandeffectofclayamendment AT ferreyroagv copperspeciationinsoiltimeevolutionandeffectofclayamendment AT parolome copperspeciationinsoiltimeevolutionandeffectofclayamendment AT tudinomb copperspeciationinsoiltimeevolutionandeffectofclayamendment AT lavadors copperspeciationinsoiltimeevolutionandeffectofclayamendment AT molinafv copperspeciationinsoiltimeevolutionandeffectofclayamendment |
| _version_ |
1782029733933875200 |