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(Article of periodic en Anglais - 2012)

Document title

Background levels of potentially toxic elements in soils : A case study in Catamarca (a semiarid region in Argentina)

Authors(s) and Affiliation(s)

ROCA N. (1 2) ; PAZOS M.S. (1) ; BECH J. (1) ;
(1) Unitat de Fisiologia Vegetal, Fac. de Biologia, Univ., Barcelona, ESPAGNE
(2) Fac. de Agronomía - Univ. Nacional del Centro de la Provincia de Buenos Aires, Azul, ARGENTINE

Abstract

Thirty soil profiles from the agricultural area of Fray Mamerto Esquiú (Catamarca, Argentina) were investigated, and the variability in the natural backgroundlevels of seven heavy metals (Cd, Cr, Cu, Mn, Ni, Pb and Zn) was examined. Sampling sites with minimal anthropogenic influence were selected, and soil profile samples were analysed for major and trace element content. The heavy metal with the greatest number of samples and slight enrichment anomalies is Cd. Slight enrichment anomalies in Cd, Cr, Cu, Pb and Zn were detected in profile 29, confirming anthropogenic contamination. The results of this study confirm the importance of the local determination of background concentrations. The percentage of organic matter is the determining factor in the presence and distribution of the metals (Cu, Fe, Mn and Zn) available in the soils of the studied area, the top horizon having the greatest accumulation

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 92 [pp. 55-66]

Bibliographic references : 41 ref.

Collation : 6 fig., 7 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2011.11.009

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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