Sources and transport pathways of common heavy metals to urban road surfaces
Gunawardena, Janaka, Ziyath, Abdul M, Egodawatta, Prasanna, Ayoko, Godwin A., & Goonetilleke, Ashantha (2015) Sources and transport pathways of common heavy metals to urban road surfaces. Ecological Engineering, 77, pp. 98-102.
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Heavy metals that are built-up on urban impervious surfaces such as roads are transported to urban water resources through stormwater runoff. Therefore, it is essential to understand the predominant pathways of heavy metals to the build-up on roads in order to develop suitable pollution mitigation strategies to protect the receiving water environment. The study presented in this paper investigated the sources and transport pathways of manganese, lead, copper, zinc and chromium, which are heavy metals commonly present in urban road build-up. It was found that manganese and lead are contributed to road build-up primarily by direct deposition due to the re-suspension of roadside soil by wind turbulence, while traffic is the predominant source of copper, zinc and chromium to the atmosphere and road build-up. Atmospheric deposition is also the major transport pathway for copper and zinc, and for chromium, direct deposition by traffic sources is the predominant pathway.
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|Item Type:||Journal Article|
|Keywords:||Atmospheric deposition, Heavy metals, Pollutant build-up, Stormwater pollutant processes, Stormwater quality|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Water Quality Engineering (090508)|
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Schools > School of Civil Engineering & Built Environment
Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2015 Elsevier|
|Copyright Statement:||This is the author’s version of a work that was accepted for publication in Ecological Engineering. 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 Ecological Engineering, [VOL 77, (2015)] DOI: 10.1016/j.ecoleng.2015.01.023|
|Deposited On:||23 Feb 2015 04:04|
|Last Modified:||24 Feb 2015 03:36|
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