Bulk deposition samples were collected in remote, rural village and urban areas of BeijingTianjin region, North China in spring, summer, fall and winter from 2007 to 2008. The annually averaged PAHs concentration and deposition flux were 11.814.61g/g and 5.23.89g/m2/day respectively. PHE and FLA had the highest deposition flux, accounting for 35.3% and 20.7% of total deposition flux, respectively. More exposure risk from deposition existed in the fall for the local inhabitants. In addition, the PAHs deposition flux in rural villages (3.91g/m2/day) and urban areas (8.28g/m2/day) was 3.8 and 9.1 times higher than in background area (0.82g/m2/day), respectively. This spatial variation of deposition fluxes of PAHs was related to the PAHs emission sources, local population density and air concentration of PAHs, and the PAHs emission sources alone can explain 36%, 49%, 21% and 30% of the spatial variation in spring, summer, fall and winter, respectively.
Environmental Pollution – Elsevier
Published: Jan 1, 2011
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