title: Analysis of the build-up of semi and non volatile organic compounds on urban roads.
abstract: Vehicular traffic in urban areas may adversely affect urban water quality through the build-up of traffic generated semi and non volatile organic compounds (SVOCs and NVOCs) on road surfaces. The characterisation of the build-up processes is the key to developing mitigation measures for the removal of such pollutants from urban stormwater. An in-depth analysis of the build-up of SVOCs and NVOCs was undertaken in the Gold Coast region in Australia. Principal Component Analysis (PCA) and Multicriteria Decision tools such as PROMETHEE and GAIA were employed to understand the SVOC and NVOC build-up under combined traffic scenarios of low, moderate, and high traffic in different land uses. It was found that congestion in the commercial areas and use of lubricants and motor oils in the industrial areas were the main sources of SVOCs and NVOCs on urban roads, respectively. The contribution from residential areas to the build-up of such pollutants was hardly noticeable. It was also revealed through this investigation that the target SVOCs and NVOCs were mainly attached to particulate fractions of 75-300 μm whilst the redistribution of coarse fractions due to vehicle activity mainly occurred in the >300 μm size range. Lastly, under combined traffic scenario, moderate traffic with average daily traffic ranging from 2300 to 5900 and average congestion of 0.47 were found to dominate SVOC and NVOC build-up on roads.
authors: School of Urban Development, Queensland University of Technology, Brisbane, Queensland, Australia. s.mahbub@qut.edu.au
authors: Parvez
authors: P
authors: Mahbub
authors: Godwin A
authors: GA
authors: Ayoko
authors: Ashantha
authors: A
authors: Goonetilleke
authors: Prasanna
authors: P
authors: Egodawatta
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D025341:Principal Component Analysis; D014186:Transportation / Q000706:statistics & numerical data; D001335:Vehicle Emissions / Q000032:analysis; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D004391:Dust; D001335:Vehicle Emissions; D055549:Volatile Organic Compounds