DOI: 10.1016/j.atmosres.2018.10.023
Scopus记录号: 2-s2.0-85056218153
论文题名: Variation tendency of pollution characterization, sources, and health risks of PM 2.5 -bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data
作者: Jiang N. ; Li L. ; Wang S. ; Li Q. ; Dong Z. ; Duan S. ; Zhang R. ; Li S.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 217 起始页码: 81
结束页码: 92
语种: 英语
英文关键词: Carcinogenic risk
; Diagnostic ratio
; PM 2.5 -bound PAH
; Positive matrix factorization
; Potential source contribution function
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
英文摘要: In this study, a total of 180 PM 2.5 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 PM 2.5 were analyzed. Diagnostic ratio and positive matrix factorization (PMF) were used for annual PAH source identification, and health risks and source regions of PM 2.5 -bound PAHs were also investigated. Results showed high pollution levels of PM 2.5 , 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 PM 2.5 by diagnostic ratios. PMF results showed that coal combustion had the highest contribution to PM 2.5 -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 PM 2.5 , 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 PM 2.5 . 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), ∑ 16 PAHs TEQ , and carcinogenic PAHs remained high, especially for BaP, which had an annual concentration (1.9–5.5 ng/m 3 ) 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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122369
Appears in Collections: 气候变化事实与影响
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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
Recommended Citation:
Jiang N.,Li L.,Wang S.,et al. Variation tendency of pollution characterization, sources, and health risks of PM 2.5 -bound polycyclic aromatic hydrocarbons in an emerging megacity in China: Based on three-year data[J]. Atmospheric Research,2019-01-01,217