JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2022, Vol. 57 ›› Issue (3): 1-9.doi: 10.6040/j.issn.1671-9352.0.2021.818

   

Cytotoxicity and emission source analysis of PAHs in PM2.5 in the atmosphere of Jinan

WANG Xin-li1,2, YANG Min-min1,2#, LI Hai-yan3, WANG Gui-rong4, WANG Yan1,2*   

  1. 1. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, Shandong, China;
    2. Key Laboratory of Environmental Processes and Health Hazards, Shandong University, Qingdao 266237, Shandong, China;
    3. Zibo Ecological Environment Bureau Zhoucun Branch, Zibo 255300, Shandong, China;
    4. SUNY Upstate Medical University, Syracuse 13210, New York, USA
  • Published:2022-03-15

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Abstract: Atmospheric PM2.5 samples were continuously collected in Jinan from October 2015 to May 2016, the concentration characteristics of PM2.5 and polycyclic aromatic hydrocarbons(PAHs)were analyzed, and positive matrix factorization(PMF)model and potential source contribution function(PSCF)were used to analyze the emission sources of PAHs. The PM2.5 samples were exposed to human lung epithelial cells(A549), the cell death rates were measured using the CCK-8 kits to analyze the effects of PM2.5 and PAHs on cell mortality. The results showed that the average mass concentration of PM2.5 in Jinan was 107 μg/m3 and 68% of the days exceeded the National Air Quality Secondary Standard(75 μg/m3). The average volume concentration of 15 PAHs in PM2.5 was 26.74 ng/m3. The average death rate of A549 cells was 34.3%, and more than 40% had death rates between 30%-45% after exposed to PM2.5, which indicated the toxicity of PM2.5 on human health. The emission sources of PAHs mainly include coal combustion sources, traffic pollution sources, coke oven sources and petroleum sources. Acenaphthene, benzo(b)fluoranthrene, benzo(k)fluoranthrene, benzo(a)pyrene and indenol(1,2,3-cd)pyrene are key toxic PAHs which are mainly contributed by coal combustion sources and traffic pollution sources emitted from local sources and through regional transport.

Key words: PM2.5, polycyclic aromatic hydrocarbon, pollution characteristic, cytotoxicity, source identification

CLC Number: 

  • X513
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