| Literature DB >> 19866364 |
Chengkun Wang1, Yingxia Li, Jingling Liu, Li Xiang, Jianghong Shi, Zhifeng Yang.
Abstract
Street dust was collected from five roads with different traffic volumes in the metropolitan area of Beijing and separated into five size fractions. Concentrations of polycyclic aromatic hydrocarbons (PAHs) adsorbed on street dust in different size ranges and their correlation with specific surface area and total organic carbon (TOC) were investigated. Results show that the concentration of 16-PAHs of sieved samples ranges from 0.27 to 1.30 mg/kg for all the sampling sites. Particles smaller than 40 mum in diameter have the highest 16-PAHs concentration among all of the size ranges for street dust from the four sampling sites with vehicles running on. PAHs with three or four rings account for 68% of the overall 16-PAHs on average. Remarkable positive correlation exists between 16-PAHs concentration and specific surface area with R(2) values from 0.7 to 0.96 for the four sampling sites with vehicles running on. The relationship between the concentration of 16-PAHs and TOC is less clear.Entities:
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Year: 2009 PMID： 19866364 DOI： 10.1007/s10661-009-1205-1
Source DB: PubMed Journal: Environ Monit Assess ISSN： 0167-6369 Impact factor: 2.513