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

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 e...

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Main Authors: Mackay, A., Taylor, M., Munksgaard, N., Hudson-Edwards, K., Nunes, Laurie
Format: Journal Article
Published: Elsevier Science Ltd 2013
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/28391
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author Mackay, A.
Taylor, M.
Munksgaard, N.
Hudson-Edwards, K.
Nunes, Laurie
author_facet Mackay, A.
Taylor, M.
Munksgaard, N.
Hudson-Edwards, K.
Nunes, Laurie
author_sort Mackay, A.
building Curtin Institutional Repository
collection Online Access
description 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
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spelling curtin-20.500.11937-283912017-09-13T15:56:19Z Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia Mackay, A. Taylor, M. Munksgaard, N. Hudson-Edwards, K. Nunes, Laurie Contamination Blood lead (PbB) Mount Isa Mining and smelting Lead isotope Lead (Pb) 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 2013 Journal Article http://hdl.handle.net/20.500.11937/28391 10.1016/j.envpol.2013.05.007 Elsevier Science Ltd restricted
spellingShingle Contamination
Blood lead (PbB)
Mount Isa
Mining and smelting
Lead isotope
Lead (Pb)
Mackay, A.
Taylor, M.
Munksgaard, N.
Hudson-Edwards, K.
Nunes, Laurie
Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
title Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
title_full Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
title_fullStr Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
title_full_unstemmed Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
title_short Identification of environmental lead sources and pathways in a mining and smelting town: Mount Isa, Australia
title_sort identification of environmental lead sources and pathways in a mining and smelting town: mount isa, australia
topic Contamination
Blood lead (PbB)
Mount Isa
Mining and smelting
Lead isotope
Lead (Pb)
url http://hdl.handle.net/20.500.11937/28391