Source characterisation of road dust based on chemical and mineralogical composition

Gunawardana, Chandima, Goonetilleke, Ashantha, Egodawatta, Prasanna, Dawes, Les A., & Kokot, Serge (2012) Source characterisation of road dust based on chemical and mineralogical composition. Chemosphere, 87(2), pp. 163-170.

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Road dust contain potentially toxic pollutants originating from a range of anthropogenic sources common to urban land uses and soil inputs from surrounding areas. The research study analysed the mineralogy and morphology of dust samples from road surfaces from different land uses and background soil samples to characterise the relative source contributions to road dust. The road dust consist primarily of soil derived minerals (60%) with quartz averaging 40-50% and remainder being clay forming minerals of albite, microcline, chlorite and muscovite originating from surrounding soils. About 2% was organic matter primarily originating from plant matter. Potentially toxic pollutants represented about 30% of the build-up. These pollutants consist of brake and tire wear, combustion emissions and fly ash from asphalt. Heavy metals such as Zn, Cu, Pb, Ni, Cr and Cd primarily originate from vehicular traffic while Fe, Al and Mn primarily originate from surrounding soils. The research study confirmed the significant contribution of vehicular traffic to dust deposited on urban road surfaces.

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ID Code: 49070
Item Type: Journal Article
Refereed: Yes
Keywords: pollutants build-up, pollutant source identification, road dust, road surface pollutants, traffic generated particles
DOI: 10.1016/j.chemosphere.2011.12.012
ISSN: 0045-6535
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ENVIRONMENTAL ENGINEERING (090700) > Environmental Engineering Modelling (090702)
Divisions: Past > Schools > Chemistry
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Urban Development
Copyright Owner: Crown Copyright © 2011 Published by Elsevier Ltd.
Copyright Statement: This is the author’s version of a work that was accepted for publication in <Chemosphere>. 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 Chemosphere, [VOL 87, ISSUE 2, (April 2012)] DOI: 10.1016/j.chemosphere.2011.12.012
Deposited On: 12 Mar 2012 22:29
Last Modified: 11 Sep 2013 03:49

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