Abstract
The characteristics of atmospheric PM10- and PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) were investigated in Tongling city, China. Results showed that the total concentrations of PM10- and PM2.5-bound PAHs exhibited distinct seasonal and spatial variability. The metallurgic sites showed the highest PAH concentrations, which is mainly attributed to the metallurgic activities (mainly copper ore smelting) and coal combustion as the smelting fuel. The rural area showed the lowest concentrations, but exhibited significant increase from summer to autumn. This seasonal fluctuation is mainly caused by the biomass burning at the sites in the harvest season. The diagnostic ratio indicated that the main PAHs sources were vehicle exhausts, coal combustion and biomass burning. The total BaP equivalent concentration (BAP-TEQ) was found to be maximum at DGS site in winter, whereas it was minimum at BGC site in summer. Risk assessment indicates that residential exposure to PAHs in the industrial area, especially in the winter season, may pose a greater inhalation cancer risk than people living in living area and rural area.
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Acknowledgements
The work was supported by National Key R&D Program of China (2016YFC0201600), National Natural Science Foundation of China (41403076, 41773099), Natural Science Foundation of Anhui Province (1604f0804001). We thank the editor Erin Bennett and anonymous reviewers for their thoughtful comments.
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Zhang, H., Wang, R., Xue, H. et al. Characteristic and Source of Atmospheric PM10- and PM2.5-bound PAHs in a Typical Metallurgic City Near Yangtze River in China. Bull Environ Contam Toxicol 100, 303–309 (2018). https://doi.org/10.1007/s00128-017-2217-0
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DOI: https://doi.org/10.1007/s00128-017-2217-0