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Characteristics and Health Risk Assessment of PM2.5-Bound PAHs during Heavy Air Pollution Episodes in Winter in Urban Area of Beijing, China

by 1,2,4,†, 2,3,†, 1, 3, 1, 1, 1 and 2,*
1
Department of Urban Construction, Beijing City University, Beijing 100083, China
2
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
3
College of Earth Sciences, Jilin University, Changchun 130061, China
4
Beijing Municipal Research Institute of Environmental Protection, National Engineering Research Center of Urban Environmental Pollution Control, Beijing 100037, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Evangelos Tolis
Atmosphere 2021, 12(3), 323; https://doi.org/10.3390/atmos12030323
Received: 17 December 2020 / Revised: 19 February 2021 / Accepted: 22 February 2021 / Published: 1 March 2021
(This article belongs to the Section Aerosols)
PM2.5 level has decreased significantly in Beijing in recent years due to the strict air quality control measures taken in Jingjinji Region and the surrounding areas. However, the variation characteristics of the concentrations of PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) in Beijing in recent years are still not so clear. In order to understand the pollution status of PM2.5-bound PAHs in Beijing, fifteen PAHs were measured in a typical urban area of Beijing from 1 March to 20 March 2018. The average mass concentration of the 15 PAHs was 21 ng/m3 and higher in the nighttime than that in the daytime. The proportion of 4-ring PAHs in 15 PAHs was highest (43%), while 6-ring PAHs was lowest (10%). The levels of PAHs were higher during heavy pollution episodes than those in non-heavy pollution episodes, and the proportions of 5- and 6-ring PAHs were increased during a heavy pollution episode. PAHs posed obvious carcinogenic risks to the exposed populations, and the risk was higher during heavy pollution episodes than the average value of the whole monitoring period. The main sources of PAHs were traffic emissions and coal/biomass burning. Air masses from the south-southeast had a great influence on the PM2.5 levels during a heavy pollution episode. It is recommended that not only the PM2.5 levels but also the PAHs levels bounded in PM2.5 should be controlled to protect human health in Beijing. View Full-Text
Keywords: PM2.5-bound PAHs; pollution characteristics; health risk assessment; sources; Beijing PM2.5-bound PAHs; pollution characteristics; health risk assessment; sources; Beijing
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MDPI and ACS Style

Luo, M.; Ji, Y.; Ren, Y.; Gao, F.; Zhang, H.; Zhang, L.; Yu, Y.; Li, H. Characteristics and Health Risk Assessment of PM2.5-Bound PAHs during Heavy Air Pollution Episodes in Winter in Urban Area of Beijing, China. Atmosphere 2021, 12, 323. https://doi.org/10.3390/atmos12030323

AMA Style

Luo M, Ji Y, Ren Y, Gao F, Zhang H, Zhang L, Yu Y, Li H. Characteristics and Health Risk Assessment of PM2.5-Bound PAHs during Heavy Air Pollution Episodes in Winter in Urban Area of Beijing, China. Atmosphere. 2021; 12(3):323. https://doi.org/10.3390/atmos12030323

Chicago/Turabian Style

Luo, Mei, Yuanyuan Ji, Yanqin Ren, Fuhong Gao, Hao Zhang, Lihui Zhang, Yanqing Yu, and Hong Li. 2021. "Characteristics and Health Risk Assessment of PM2.5-Bound PAHs during Heavy Air Pollution Episodes in Winter in Urban Area of Beijing, China" Atmosphere 12, no. 3: 323. https://doi.org/10.3390/atmos12030323

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