Taxonomy of factors which influence heavy metal build-up on urban road surfaces

Liu, An, Gunawardana, Chandima, Gunawardena, Janaka, Egodawatta, Prasanna, Ayoko, Godwin A., & Goonetilleke, Ashantha (2016) Taxonomy of factors which influence heavy metal build-up on urban road surfaces. Journal of Hazardous Materials, 310, pp. 20-29.

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Abstract

Heavy metals build-up on urban road surfaces is a complex process and influenced by a diverse range of factors. Although numerous research studies have been conducted in the area of heavy metals build-up, limited research has been undertaken to rank these factors in terms of their influence on the build-up process. This results in limitations in the identification of the most critical factor/s for accurately estimating heavy metal loads and for designing effective stormwater treatment measures. The research study undertook an in-depth analysis of the factors which influence heavy metals build-up based on data generated from a number of different geographical locations around the world. Traffic volume was found to be the highest ranked factor in terms of influencing heavy metals build-up while land use was ranked the second. Proximity to arterial roads, antecedent dry days and road surface roughness has a relatively lower ranking. Furthermore, the study outcomes advances the conceptual understanding of heavy metals build-up based on the finding that with increasing traffic volume, total heavy metal build-up load increases while the variability decreases. The outcomes from this research study are expected to contribute to more accurate estimation of heavy metals build-up loads leading to more effective stormwater treatment design.

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ID Code: 93580
Item Type: Journal Article
Refereed: Yes
Keywords: Heavy metals, Traffic volume, Stormwater quality, Stormwater pollutant processes, Multivariate analysis
DOI: 10.1016/j.jhazmat.2016.02.026
ISSN: 0304-3894
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
Facilities: Central Analytical Research Facility
Copyright Owner: Copyright 2016 Elsevier BV
Copyright Statement: Licensed under the Creative Commons Attribution; Non-Commercial; No-Derivatives 4.0 International. DOI: 10.1016/j.jhazmat.2016.02.026
Deposited On: 09 Mar 2016 23:49
Last Modified: 15 Mar 2016 04:34

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