title: Polycyclic aromatic hydrocarbons (PAHs) in urban surface dust of Guangzhou, China: Status, sources and human health risk assessment.
abstract: Ninety-six urban surface dust samples collected from Guangzhou, a typical urban center in South China, were analyzed for 16 PAHs (2-6 rings). ∑PAHs concentrations in the urban surface dust ranged from 0.84 to 12.3μg/g with a mean of 4.80μg/g. High molecular weight compounds (4-6 rings) contributed to 62 to 94% of ∑PAHs mass in the surface dust samples. Four hotspots with highest ∑PAHs were identified via kriging prediction mapping, representing the highly-urbanized regions: central downtown, highway and industrial area. Two major origins of PAHs inputs to urban surface dust were identified as vehicle emissions (51.9%) and coal combustion (26.8%). The 95% UCL of Incremental Lifetime Cancer Risk (ILCR) due to human exposure to urban surface dust PAHs in central South China was 3.03×10(-6) for children and 2.92×10(-6) for adults.
authors.affiliation: Croucher Institute for Environmental Sciences, and Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Min-Juan
authors.initials: MJ
authors.lastname: Huang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Kang
authors.forename: Hong-Sheng
authors.initials: HS
authors.lastname: Wang
authors.forename: Anna O W
authors.initials: AO
authors.lastname: Leung
authors.forename: Kwai Chung
authors.initials: KC
authors.lastname: Cheung
authors.forename: Ming Hung
authors.initials: MH
authors.lastname: Wong
mesh_terms: D000293:Adolescent; D000328:Adult; D000393:Air Pollutants / Q000032:analysis*; D002648:Child; D002681:China; D002947:Cities; D003031:Coal / Q000032:analysis; D004391:Dust / Q000032:analysis*; D004781:Environmental Exposure / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D006801:Humans; D007223:Infant; D015233:Models, Statistical; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D018570:Risk Assessment; D001335:Vehicle Emissions / Q000032:analysis; D055815:Young Adult
chemical_list: D000393:Air Pollutants; D003031:Coal; D004391:Dust; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions