Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 289, Issue -, Pages 46-53Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2015.02.034
Keywords
Ecological risk assessment; Bioassay; Bioavailability; Threshold
Categories
Funding
- Ministry of Science and Innovation (Spain) [CGL 2010-19902, FPI-MICINN BES-2011-045101]
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Soil contamination with lead is a worldwide problem. Pb can cause adverse effects, but its mobility and availability in the terrestrial environment are strongly controlled by soil properties. The present study investigated the influence of different soil properties on the solubility of lead in laboratory spiked soils, and its toxicity in three bioassays, including Lactuca sativa root elongation and Vibrio fischeri illumination tests applied to aqueous extracts and basal soil respiration assays. Final aim was to compare soil-dependent toxicity with guideline values. The L. sativa bioassay proved to be more sensitive to Pb toxicity than the V. fischeri and soil respiration tests. Toxicity was significantly correlated with soil properties, with soil pH, carbonate and organic carbon content being the most important factors. Therefore, these variables should be considered when defining guideline values. (C) 2015 Elsevier B.V. All rights reserved.
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