Abstract
Lead (Pb) is a non-threshold toxin capable of inducing toxic effects at any blood level but availability of soil screening criteria for assessing potential health risks is limited. The oral bioaccessibility of Pb in 163 soil samples was attributed to sources through solubility estimation and domain identification. Samples were extracted following the Unified BARGE Method. Urban, mineralisation, peat and granite domains accounted for elevated Pb concentrations compared to rural samples. High Pb solubility explained moderate-high gastric (G) bioaccessible fractions throughout the study area. Higher maximum G concentrations were measured in urban (97.6 mg kg−1) and mineralisation (199.8 mg kg−1) domains. Higher average G concentrations occurred in mineralisation (36.4 mg kg−1) and granite (36.0 mg kg−1) domains. Findings suggest diffuse anthropogenic and widespread geogenic contamination could be capable of presenting health risks, having implications for land management decisions in jurisdictions where guidance advises these forms of pollution should not be regarded as contaminated land.
| Original language | English |
|---|---|
| Pages (from-to) | 161-171 |
| Number of pages | 11 |
| Journal | Environmental Pollution |
| Volume | 198 |
| Early online date | 17 Jan 2015 |
| DOIs | |
| Publication status | Published - Mar 2015 |
Bibliographical note
Upper Quartile Journal (Q1 IF 3.9) with rigorous peer review
Access to Document
- The effects of lead sources on oral bioaccessibility in soil and implications for contaminated land risk management
© 2015 Elsevier Ltd. This is the author’s version of a work that was accepted for publication in Environmental Pollution. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Environmental Pollution, [VOL 198, (March 2015)] doi:10.1016/j.envpol.2015.01.004
