Source diagnostics of polycyclic aromatic hydrocarbons in urban road runoff, dust, rain and canopy throughfall

• Published in: Environmental pollution (1987) Vol. 153; no. 3; pp. 594 - 601
• Main Authors: Zhang, Wei, Zhang, Shucai, Wan, Chao, Yue, Dapan, Ye, Youbin, Wang, Xuejun
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.2008; Elsevier
• Subjects: Applied sciences; China; Cities; Coal; coking; combustion; Dust; dust emissions; Environmental Monitoring - methods; Environmental Pollutants - analysis; Exact sciences and technology; Gas Chromatography-Mass Spectrometry; Global environmental pollution; Models, Statistical; PAHs; Particle Size; Petroleum; Pollution; polycyclic aromatic hydrocarbons; Polycyclic Aromatic Hydrocarbons - analysis; Rain; Road runoff; roads; roadside soils; Source diagnostics; street trees; throughfall; Urban area; urban areas; urban runoff; Vehicle Emissions; vehicles; Water Movements; China; Asia; China, People's Rep., Beijing; PAHs; Source diagnostics; Urban area; Road runoff; Throughfall; Megalopolis; Identification; Multiple linear regression; Mutagen; Persistent organic pollutant; Rain; Street; Sampling; Organic compounds; Anthropogenic factor; Statistical analysis; Hydrocarbon; Linear regression; Runoff water; Polycyclic aromatic compound; Carcinogen; Dust; Pollution source; Atmospheric precipitation; Principal component analysis; Canopy(vegetation)
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2007.09.004

Diagnostic ratios and multivariate analysis were utilized to apportion polycyclic aromatic hydrocarbon (PAH) sources for road runoff, road dust, rain and canopy throughfall based on samples collected in an urban area of Beijing, China. Three sampling sites representing vehicle lane, bicycle lane and branch road were selected. For road runoff and road dust, vehicular emission and coal combustion were identified as major sources, and the source contributions varied among the sampling sites. For rain, three principal components were apportioned representing coal/oil combustion (54%), vehicular emission (34%) and coking (12%). For canopy throughfall, vehicular emission (56%), coal combustion (30%) and oil combustion (14%) were identified as major sources. Overall, the PAH's source for road runoff mainly reflected that for road dust. Despite site-specific sources, the findings at the study area provided a general picture of PAHs sources for the road runoff system in urban area of Beijing. Urban road runoff and road dust, canopy throughfall and rain were considered as a system for diagnostics of PAH sources.