|Laboratory-polluted soils: A methodological approach to establish equilibrium conditions for different metal chemical forms in soils
|Tipo di pubblicazione
|Articolo su Rivista peer-reviewed
|Anno di Pubblicazione
|Pietrantonio, Massimiliana, Calace N., Petronio B.M., and Pietroletti M.
|Journal of Environmental Monitoring
|article, cation exchange, chemical compound, Chemical parameters, Copper, heavy metal, industrial waste, laboratory, Lead, methodology, Models, organic matter, Paper, Paper industry, pH, priority journal, sludge, Soil Pollutants, Soil pollution, soil treatment, Theoretical, Zinc
An approach based on the number of extractions performed over time was applied to study the time necessary to attain equilibrium conditions between the different chemical forms present in two natural soils laboratory-loaded with heavy metals (Cu(II), Pb(II), Zn(II)). The influence of some soil parameters, such as pH value, cation exchange capacity and organic matter content, on the equilibrium time was evidenced both by the different nature of the soils and by the treatment of soils with paper mill sludge. Equilibrium conditions were determined by studying the metal partitioning in the soil on a case by case basis. The behaviour of the three metals was not the same, and the conditions of equilibrium among the different chemical forms were the result of the amount of heavy metals added as well as of the nature of the soil.
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