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dc.contributor.author
Orroño, Daniela I.
dc.contributor.author
Lavado, Raul Silvio
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dc.date.available
2018-09-27T14:53:51Z
dc.date.issued
2009-11
dc.identifier.citation
Orroño, Daniela I.; Lavado, Raul Silvio; Distribution of extractable heavy metals in different soil fractions; Science Reviews 2000 Ltd; Chemical Speciation and Bioavailability; 21; 4; 11-2009; 193-198
dc.identifier.issn
0954-2299
dc.identifier.uri
http://hdl.handle.net/11336/61042
dc.description.abstract
Due to the difficulties of precisely characterizing environmentally contaminated soil, the effects of heavy metals on plants are studied using uncontaminated soil spiked with known quantities of heavy metals. One problem in using spiked soils is how accurately the distribution of metals mimics stabilized natural soils. We studied the distribution of cadmium, chromium, copper, lead, nickel, and zinc in soil fractions after application in soluble form. The soil samples included a control (an uncontaminated Typic Argiudoll) and two samples spiked with either a moderate or high heavy metal concentration). After application of the salts the soils were subjected to wet/dry cycles over the course of three months. The soils were fractionated using a sequential chemical extraction procedure employing: (1) CaCl2, (2) NaOH, (3) Na2EDTA and (4) HNO3, HCl, and HF. Soil physical separation was carried out by ultrasonic dispersion. The heavy metal levels were determined using ICP-AES. Each heavy metal displayed a unique behavior when added to soil in the form of soluble salts. Cadmium and zinc remained in the soluble fraction, indicating that no equilibrium was attained, while nickel primarily appeared in the insoluble fraction. Chromium, copper and lead were distributed among various soil chemical fractions. The highest levels of all metals appeared in the clay fraction except lead which was mainly present in the silt fraction.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Science Reviews 2000 Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.subject
Extraction
dc.subject
Fractionation
dc.subject
Heavy Metals
dc.subject
Soil
dc.subject.classification
Agricultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Distribution of extractable heavy metals in different soil fractions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-21T20:35:10Z
dc.journal.volume
21
dc.journal.number
4
dc.journal.pagination
193-198
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Orroño, Daniela I.. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.fil
Fil: Lavado, Raul Silvio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
dc.journal.title
Chemical Speciation and Bioavailability
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.3184/095422909X12473204137916
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3184/095422909X12473204137916
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