Mathematical relationships for metal build-up on urban road surfaces based on traffic and land use characteristics

Gunawardena, Janaka, Ziyath, Abdul Mohamed, Egodawatta, Prasanna, Ayoko, Godwin A., & Goonetilleke, Ashantha (2014) Mathematical relationships for metal build-up on urban road surfaces based on traffic and land use characteristics. Chemosphere, 99, pp. 267-271.

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The study investigated the influence of traffic and land use parameters on metal build-up on urban road surfaces. Mathematical relationships were developed to predict metals originating from fuel combustion and vehicle wear. The analysis undertaken found that nickel and chromium originate from exhaust emissions, lead, copper and zinc from vehicle wear, cadmium from both exhaust and wear and manganese from geogenic sources. Land use does not demonstrate a clear pattern in relation to the metal build-up process, though its inherent characteristics such as traffic activities exert influence. The equation derived for fuel related metal load has high cross-validated coefficient of determination (Q2) and low Standard Error of Cross-Validation (SECV) values indicates that the model is reliable, while the equation derived for wear-related metal load has low Q2 and high SECV values suggesting its use only in preliminary investigations. Relative Prediction Error values for both equations are considered to be well within the error limits for a complex system such as an urban road surface. These equations will be beneficial for developing reliable stormwater treatment strategies in urban areas which specifically focus on mitigation of metal pollution.

Impact and interest:

10 citations in Scopus
10 citations in Web of Science®
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ID Code: 68174
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Metal build-up, Stormwater pollutant processes, Stormwater quality, Traffic emissions, Traffic pollutants, Urban road surfaces
DOI: 10.1016/j.chemosphere.2013.10.068
ISSN: 0045-6535
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
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 Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 Elsevier Ltd.
Copyright Statement: NOTICE: 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, [Volume 99, (March 2014)] DOI: 10.1016/j.chemosphere.2013.10.068
Deposited On: 09 Mar 2014 23:09
Last Modified: 09 Mar 2016 11:37

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