NDLI: Investigation into atmospheric PM<sub>2.5</sub>-borne PAHs in Eastern cities of China: concentration, source diagnosis and health risk assessment

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Investigation into atmospheric PM_2.5-borne PAHs in Eastern cities of China: concentration, source diagnosis and health risk assessment

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Ye Liu, Xinran Li, Xiaofei Zhu, Junmin Lin, Xianbiao Qin, Yukun Liu, Min Yan, Wenjun Meng, Fei Wang, Juan
Copyright Year	2016
Abstract	This study investigated PM2.5-PAHs associations collected in Beijing, Jinan, and Shanghai in Eastern China. The results indicated that PM2.5 concentrations in Beijing, Jinan, and Shanghai were 125.7 μg m−3 (18.6–355.5 μg m−3), 115.9 μg m−3 (44.2–345.4 μg m−3), and 85.1 μg m−3 (24.3–232.8 μg m−3), respectively. The PAH concentrations in terms of PM2.5 in Beijing, Jinan, and Shanghai ranged from 23.2 to 819.8 ng m−3, 25.7 to 727.1 ng m−3, and 8.5 to 133.9 ng m−3, respectively. PAH concentrations were found to be positively correlated with PM2.5 concentration in Beijing and Shanghai. The compositions of PAHs in PM2.5 in Beijing and Jinan were almost the same: 11% low ring, 80–82% middle ring, and 7–9% high ring. However, Shanghai had a different composition. Source apportionment indicated that the incomplete combustion of coal and diesel and gasoline emissions were the main sources of PAHs in PM2.5 in all three cities, whereas Shanghai had a greater contribution from liquid fossil fuels. The values for the health risk assessment estimated by the benzo[a]pyrene equivalent concentration in Beijing and Jinan were 2.39 × 10−6 and 2.57 × 10−6, respectively, thus both exceeding the 1 × 10−6 limit (USEPA) considered likely to pose an inhalation cancer risk to people. Shanghai, however, had a risk estimate of 5.05 × 10−7, which is still in a safe range. This study is the first to simultaneously monitor the PAHs in PM2.5 in three cities in Eastern China and may point to a long-range transportation of PM2.5-PAHs from Beijing to Jinan and partially to Shanghai.
Starting Page	529
Ending Page	537
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507887
Volume Number	18
Issue Number	5
Journal	Environmental Science: Processes & Impacts
DOI	10.1039/c6em00012f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Beijing Jinan Shanghai Eastern China Particulates China Fossil fuel Pyrene Cancer
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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