Heavy metals in contaminated soils: \"passive approach\" as a tool for remediation (Comunicazione a convegno)

Type
Label
  • Heavy metals in contaminated soils: \"passive approach\" as a tool for remediation (Comunicazione a convegno) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Petruzzelli, Gianniantonio; Pedron, Francesca; Rosellini, Irene (2011)
    Heavy metals in contaminated soils: "passive approach" as a tool for remediation
    in VIII Forum Italiano di Scienze della Terra (Geoitalia 2011), Torino, 19-23 settembre 2011
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Petruzzelli, Gianniantonio; Pedron, Francesca; Rosellini, Irene (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • D3 - Heavy metals in the environment: sources, discharge, transport, immobilization, transfer to biosphere. - ID_PUMA: cnr.ise/2011-B3-019 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ISE, Sede distaccata di Pisa (literal)
Titolo
  • Heavy metals in contaminated soils: \"passive approach\" as a tool for remediation (literal)
Abstract
  • Human and ecological risk assessment of metals in contaminated soil is a powerful mean to evaluate environmental quality objectives in the remediation of contaminated sites. Risk based clean up procedures are carried out by a tiered methodology, which consider sources reactivity and mobility of metals in the soil environment. Among the exposure pathways which link the source of contamination to the potential receptor, the transfer of heavy metals from soil to plant, and by food chain to human beings is greatly influenced by the processes of bioavailability. Bioavailability is the key to understand the environmental risk derived by metals, since adverse effects only occur when related to biologically available forms of these elements. Extraction test generally used in soil chemistry were originally developed to predict metal deficiencies, and tend to be fairly aggressive to simulate plant behaviour. The action of plant in the rizosphere is not particularly aggressive, so \"passive approach\" have been developed. They include the collection and analysis of pore water with different means, (artificial roots, field lysimeter) or the use of passive extraction, water or neutral salts are generally used to mimic plant uptake of metals from soil which occur only via soil solution. Coupling passive approach with bioassay in which plants growing in the contaminated soils, are used as an extractant, seems to provide a powerful tool to use in the risk assessment procedure. Moreover the results can be utilized to select the best remediation technologies for metal contaminated sites. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Insieme di parole chiave di
data.CNR.it