Assessment of lead bioaccessibility in peri-urban contaminated soils
Date
2011
Authors
Smith, E.
Weber, J.
Naidu, R.
McLaren, R.G.
Juhasz, A.L.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Journal of Hazardous Materials, 2011; 186(1):300-305
Statement of Responsibility
Conference Name
Abstract
Lead (Pb) bioaccessibility was assessed in a range of peri-urban soils (n = 31) with differing sources ofPb contamination, including shooting range soils, and soils affected by incinerator, historical fill, mining/smelting,and gasworks activities. A gossan soil sample was also included. Lead bioaccessibilitywas determined using both gastric and intestinal phases of the SBRC in vitro assay and in vitro datawas then incorporated into in vivo–in vitro regression equations to calculate Pb relative bioavailability.Lead bioaccessibility ranged from 26.8–105.2% to 5.5–102.6% for gastric and intestinal phase extractionsrespectively. Generally, Pb bioaccessibility was highest in the shooting range soils and lowest in the gossansoil. Predictions of relative Pb bioavailability derived from in vitro data were comparable for shootingranges soils, but highly variable for the other soils examined. For incinerator, historical fill, gasworks andgossan soils, incorporating in vitro gastric data into the in vivo–in vitro regression equation resulting inmore conservative Pb relative bioavailability values than those derived using the intestinal in vitro data.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
Copyright 2010 Elsevier