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Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia

Mackay, A. K., Taylor, M. P., Munksgaard, N. C., Hudson-Edwards, K. A. and Burn-Nunes, L. (2013). Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia. Environmental Pollution,180:304-311.

Document type: Journal Article

IRMA ID 82057923xPUB512
Title Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
Author Mackay, A. K.
Taylor, M. P.
Munksgaard, N. C.
Hudson-Edwards, K. A.
Burn-Nunes, L.
Journal Name Environmental Pollution
Publication Date 2013
Volume Number 180
ISSN 0269-7491   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-84878814545; 2-s2.0-84891552616
Start Page 304
End Page 311
Total Pages 8
Place of Publication United Kingdom
Publisher Pergamon Press
HERDC Category C1 - Journal Article (DIISR)
Abstract Lead (Pb) concentrations and isotopic compositions from soils, dusts and aerosols from public land and residential lots adjacent to the copper and Pb mine and smelter at Mount Isa, Australia, were examined to understand the sources and risks of environmental Pb exposure. Urban soil samples contain elevated Pb concentrations (mean 1560 mg/kg), of which 45-85% of the Pb is bioaccessible. The Pb isotopic composition of surface soils (0-2 cm), aerosols and dusts (206Pb/207Pb, 208Pb/207Pb range: 1.049, 2.322-1.069, 2.345) are dominated by Pb derived from the Mount Isa Pb-zinc ore bodies. Underlying soil horizons (10-20 cm) have distinctly different Pb isotopic compositions (206Pb/207Pb, 208Pb/207Pb range: 1.093, 2.354 -1.212, 2.495). Surface soil-, dust- and aerosol-Pb are derived predominantly from smelter emissions and fugitive mining sources and not from in situ weathered bedrock. Remediation strategies should target legacy and ongoing sources of environmental Pb to mitigate the problem of Pb exposure at Mount Isa.
Keywords Blood lead (PbB)
Contamination
Lead (Pb)
Lead isotope
Mining and smelting
Mount Isa
DOI http://dx.doi.org/DOI: 10.1016/j.envpol.2013.05.007   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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