title: Bioaccumulation in Porcellio scaber (Crustacea, Isopoda) as a measure of the EDTA remediation efficiency of metal-polluted soil.
abstract: Leaching using EDTA applied to a Pb, Zn and Cd polluted soil significantly reduced soil metal concentrations and the pool of metals in labile soil fractions. Metal mobility (Toxicity Characteristic Leaching Procedure), phytoavailability (diethylenetriaminepentaacetic acid extraction) and human oral-bioavailability (Physiologically Based Extraction Test) were reduced by 85-92%, 68-91% and 88-95%, respectively. The metal accumulation capacity of the terrestrial isopod Porcellio scaber (Crustacea) was used as in vivo assay of metal bioavailability, before and after soil remediation. After feeding on metal contaminated soil for two weeks, P. scaber accumulated Pb, Zn and Cd in a concentration dependent manner. The amounts of accumulated metals were, however, higher than expected on the basis of extraction (in vitro) tests. The combined results of chemical extractions and the in vivo test with P. scaber provide a more relevant picture of the availability stripping of metals after soil remediation.
authors.affiliation: Centre for Soil and Environmental Science, Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, Sl-1000 Ljubljana, Slovenia.
authors.forename: Metka
authors.initials: M
authors.lastname: Udovic
authors.forename: Damjana
authors.initials: D
authors.lastname: Drobne
authors.forename: Domen
authors.initials: D
authors.lastname: Lestan
mesh_terms: D000818:Animals; D002104:Cadmium / Q000737:chemistry / Q000378:metabolism*; D002614:Chelating Agents / Q000737:chemistry; D004492:Edetic Acid / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000295:instrumentation*; D005260:Female; D033321:Isopoda / Q000737:chemistry / Q000378:metabolism*; D007854:Lead / Q000737:chemistry / Q000378:metabolism*; D008297:Male; D012989:Soil Pollutants / Q000737:chemistry / Q000378:metabolism*; D015032:Zinc / Q000737:chemistry / Q000378:metabolism*
chemical_list: D002614:Chelating Agents; D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead; D004492:Edetic Acid; D015032:Zinc