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. 2011 Jan;159(1):287-293.
doi: 10.1016/j.envpol.2010.08.029.

Spatial distribution and seasonal variation of atmospheric bulk deposition of polycyclic aromatic hydrocarbons in Beijing-Tianjin region, North China

Wentao Wang  1 , Staci L Massey Simonich  2 , Basant Giri  2 , Miao Xue  3 , Jingyu Zhao  3 , Shejun Chen  4 , Huizhong Shen  3 , Guofeng Shen  3 , Rong Wang  3 , Jun Cao  3 , Shu Tao  5
Affiliations

Spatial distribution and seasonal variation of atmospheric bulk deposition of polycyclic aromatic hydrocarbons in Beijing-Tianjin region, North China

Wentao Wang et al. Environ Pollut. 2011 Jan.

Abstract

Bulk deposition samples were collected in remote, rural village and urban areas of Beijing-Tianjin region, North China in spring, summer, fall and winter from 2007 to 2008. The annually averaged PAHs concentration and deposition flux were 11.81±4.61 μg/g and 5.2±3.89 μg/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 (3.91 μg/m2/day) and urban areas (8.28 μg/m2/day) was 3.8 and 9.1 times higher than in background area (0.82 μg/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.

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Figures

Fig. 1
Fig. 1
Map of sampling locations in Beijing, Tianjin and surrounding areas.
Fig. 2
Fig. 2
Spatial distribution of PAHs deposition fluxes in spring, summer, fall and winter, respectively.
Fig. 3
Fig. 3
The correlation between bulk deposition fluxes and emission density of PAHs in spring, summer, fall and winter, respectively.
Fig. 4
Fig. 4
Deposition fluxes of PAHs in background, rural village and urban sites in spring, summer, fall and winter, respectively.
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