气候变化领域集成服务门户(CCPortal): Variation tendency of pollution characterization; sources; and health risks of PM2.5-bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data

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DOI	10.1016/j.atmosres.2018.10.023
	Variation tendency of pollution characterization; sources; and health risks of PM2.5-bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data
	Jiang N.; Li L.; Wang S.; Li Q.; Dong Z.; Duan S.; Zhang R.; Li S.
发表日期	2019
ISSN	0169-8095
起始页码	81
结束页码	92
卷号	217
英文摘要	In this study, a total of 180 PM2.5 samples were collected from December 3, 2013 to October 20, 2016 in an urban area in Zhengzhou, China, and 16 polycyclic aromatic hydrocarbons (PAHs) in PM2.5 were analyzed. Diagnostic ratio and positive matrix factorization (PMF) were used for annual PAH source identification, and health risks and source regions of PM2.5-bound PAHs were also investigated. Results showed high pollution levels of PM2.5, in which all annual average concentrations substantially exceeded the Chinese standard. Although the PAH concentrations exhibited an evident decreasing trend, PAH pollution remained serious, especially in winter. Combustion, particularly coal combustion and vehicle emission, which were relative sources of 4–5-ring PAHs, played important roles in PAH pollution associated with PM2.5 by diagnostic ratios. PMF results showed that coal combustion had the highest contribution to PM2.5-bound PAHs at 39.6%, 39.6%, and 42.6% and traffic at 29.3%, 25.4%, and 27.9% in 2014–2016, respectively. Biomass burning and coking plants were also important sources of PAHs in PM2.5, with an average contribution of 16.4% ± 1.3% and 15.4% ± 3.5%, respectively. The surrounding region in Henan Province was the key potential source area for PM2.5. However, the northwest and adjoining regions of Zhengzhou were the vital potential sources for PAHs during the entire study period. The concentration levels of benzo[a]pyrene (BaP), ∑16PAHsTEQ, and carcinogenic PAHs remained high, especially for BaP, which had an annual concentration (1.9–5.5 ng/m3) that was considerably higher than the Chinese standard. Carcinogenic risks existed in the order of ingestion > dermal absorption > inhalation and adults > children > seniors > adolescents (except for naphthalene). The risk for females was slightly high, and no remarkable non-carcinogenic risk from PAHs were found. © 2018 Elsevier B.V.
英文关键词	Carcinogenic risk; Diagnostic ratio; PM2.5-bound PAH; Positive matrix factorization; Potential source contribution function
语种	英语
scopus关键词	Coal combustion; Coking; Factorization; Health risks; Hydrocarbons; Matrix algebra; Mineral oils; Naphthalene; Particles (particulate matter); Pollution; Annual average concentration; Carcinogenic risk; Concentration levels; Diagnostic ratios; Polycyclic aromatic hydrocarbons (PAHS); Positive Matrix Factorization; Potential source contribution function; Source identification; Polycyclic aromatic hydrocarbons; atmospheric pollution; carcinogen; concentration (composition); emission inventory; health risk; megacity; PAH; particulate matter; source identification; womens health; China; Henan; Zhengzhou
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162103
作者单位	Key Laboratory of Environmental Chemistry and Low Carbon Technologies of Henan Province, Research Institute of Environmental Science, College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
推荐引用方式 GB/T 7714	Jiang N.,Li L.,Wang S.,et al. Variation tendency of pollution characterization; sources; and health risks of PM2.5-bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data[J],2019,217.
APA	Jiang N..,Li L..,Wang S..,Li Q..,Dong Z..,...&Li S..(2019).Variation tendency of pollution characterization; sources; and health risks of PM2.5-bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data.Atmospheric Research,217.
MLA	Jiang N.,et al."Variation tendency of pollution characterization; sources; and health risks of PM2.5-bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data".Atmospheric Research 217(2019).