KUMPIENE, Jurate; MENCH, Michel; BES, Clémence; FITTS, Jeffrey P.

doi:10.1016/j.envpol.2011.03.005

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KUMPIENE, Jurate
Luleå University of Technology = Luleå Tekniska Universitet [LUT]

MENCH, Michel
Biodiversité, Gènes & Communautés [BioGeCo]

BES, Clémence
Biodiversité, Gènes & Communautés [BioGeCo]

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Article de revue

Ce document a été publié dans

Environmental Pollution. 2011, vol. 159, n° 6, p. 1536-1542

Elsevier

Résumé en anglais

Field plots were established at a timber treatment site to evaluate remediation of Cu contaminated topsoils with aided phytostabilization. Soil containing 2600 mg kg−1 Cu was amended with a combination of 5 wt% compost and 2 wt% iron grit, and vegetated. Sequential extraction was combined with extended X-ray absorption fine structure (EXAFS) spectroscopy to correlate changes in Cu distribution across five fractions with changes in the predominant Cu compounds two years after treatment in parallel treated and untreated field plots. Exchangeable Cu dominated untreated soil, most likely as Cu(II) species non-specifically bound to natural organic matter. The EXAFS spectroscopic results are consistent with the sequential extraction results, which show a major shift in Cu distribution as a result of soil treatment to the fraction bound to poorly crystalline Fe oxyhydroxides forming binuclear inner-sphere complexes.< Réduire

Mots clés

COPPER(II)

EXAFS

CONTAMINATION DU SOL

Mots clés en anglais

COMPOST

IN SITU STABILIZATION

SEQUENTIAL EXTRACTION

ZEROVALENT IRON