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Heavy metals in some French forest soils : Distribution, origin and controlling factors

Probst, Anne and Hernandez, Laura and Probst, Jean-Luc and Ulrich, Erwin Heavy metals in some French forest soils : Distribution, origin and controlling factors. (2003) Journal de Physique IV - Proceedings, vol. 1 . pp. 1107-1110. ISSN 1155-4339

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Official URL: http://dx.doi.org/10.1051/jp4:20030494

Abstract

The lowest heavy metal contents are observed in acid soils while the highest contents are in the mollic andosol and in the calcaric cambisol. Cr and Ni concentrations increase with depth in all soils, except the podzol. Co, Cu, Zn behaviour depends on the soil. Cu and Zn decrease with depth in some acid soils. Pb and Cd accumulate in all surface horizons. In the dystric planosol and stagnic luvisol, heavy metals accumulate in deep soil horizons (important clay content). The abundance order of heavy metal contents in soil profiles is : Cr>Zn>Pb>Ni>Cu>Co>Cd. Almost all heavy metals are mainly correlated to soil pH, iron and aluminium oxides (mainly Cu and Zn), but also to clay content, organic matter and CEC depending on the metal. Ni and Cr are the only heavy metals related to CEC. Pb is related to clay content in acid soils. The highest Pb content concerns a soil located in the N-NE part of France. Pb presents a significant enrichment in surface horizon from various soils in this area which receives significant acid atmospheric pollution. Lead isotopes corrborate the anthropogenic inputs and particularly the influence of leader gasoline compared to industrial emissions or airborne particles.

Item Type:Article
Additional Information:Thanks to EDP Sciences editor. The definitive version is available at http://publications.edpsciences.org/ The original PDF of the article can be found at Journal de Physique IV - Proceedings website : http://jp4.journaldephysique.org/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
French research institutions > Institut de Recherche pour le Développement - IRD
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Office National des Forêts - ONF
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Deposited By:Florence Amor

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