Abstract

Solubility of heavy metals in soils is one of the main parameters causing their transfer into the hydrosphere and into the biosphere. It is thus important to understand its mechanisms in order to improve the current methodologies of risk assessment. Leaching tests were performed to investigate the solubility of Cd, Pb and Zn in 458 contaminated agricultural soils sampled around two smelters in Northern France. Distilled water and acetic acid were used consecutively to characterize two strengths of heavy metal extractability.

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