DOI: 10.1016/j.atmosenv.2015.01.026
Scopus记录号: 2-s2.0-84921048700
论文题名: Long term observations of PM2.5-associated PAHs: Comparisons between normal and episode days
作者: Wang J ; , Li X ; , Jiang N ; , Zhang W ; , Zhang R ; , Tang X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 104 起始页码: 228
结束页码: 236
语种: 英语
英文关键词: BaP
; Diagnose ratios
; Episode events
; PAHs
; PM2.5
; PMF
Scopus关键词: Air pollution control
; Aromatic hydrocarbons
; Coal combustion
; Coking
; Pollution
; Pollution control
; Pyrene
; BaP
; Diagnose ratios
; Episode events
; PAHs
; PMF
; Polycyclic aromatic hydrocarbons
; benzo[a]pyrene
; benzo[b]fluoranthene
; benzo[k]fluoranthene
; benz[a]anthracene
; chrysene
; fluoranthene
; indeno[1,2,3 cd]pyrene
; polycyclic aromatic hydrocarbon
; ambient air
; aromatic hydrocarbon
; concentration (composition)
; observational method
; particulate matter
; pollutant source
; pollution control
; seasonal variation
; air pollution
; ambient air
; Article
; autumn
; China
; combustion
; concentration (parameters)
; controlled study
; human
; humidity
; molecular weight
; particulate matter
; priority journal
; seasonal variation
; spring
; suburban area
; summer
; winter
; China
; Henan
; Zhengzhou
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The pollution characteristic of fine particular matter (PM2.5) and associated polycyclic aromatic hydrocarbons (PAHs) are currently drawing a great deal of interest because of their influence on environment and health. In this study, PM2.5 was collected from 2011 to 2013 (n=188) in a suburban area of Zhengzhou, China. 16-PAHs were analyzed to determine the concentration, seasonal variation and potential sources during normal days and episode events. The total mass of 16 PAHs and PM2.5 were in the range of 7-961ngm-3 and 55-697μgm-3, with a 3-year average of 174ngm-3 and 194μgm-3 respectively. Winter is most polluted for both PM2.5 and PAHs. Average PAH and PM2.5 concentrations during three episode events are 454ngm-3 and 453μgm-3, respectively, much higher than values during normal days (299ngm-3 and 180μgm-3, respectively). Ratios of σ16PAH/PM2.5 varied with seasons and concentrations of PM2.5, but showed a negative correlation with PM2.5 concentrations during episode events. The dominant components of PAHs are Benzo[b]fluoranthene, Chrysene, Fluoranthene, and Benzo[k]fluoranthene, Benz[a]anthracene, Pyrene, Indeno(1,2,3-cd)pyrene and their total concentrations vary from 27 to 342ngm-3, accounting for 58-82% (average=73%) of 16 PAHs. The Benzo[a]pyrene (Bap) concentration obtained was 9.4ngm-3 (3-year average), exceeding nearly one order of magnitude of ambient air BaP standard (annual average: 1.0ngm-3) in China. Diagnose ratios and Positive Matrix Factorization results show that coal combustion, vehicles, coking plant, and biomass burning are main sources for PAHs in this area. The high concentrations of PM2.5 and PAHs, especially during episode events, reflected a potential health problem for nearby public and the necessity of air pollution control for both stationary and mobile sources. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81980
Appears in Collections: 气候变化事实与影响
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作者单位: Research Institute of Environmental Science, College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China
Recommended Citation:
Wang J,, Li X,, Jiang N,et al. Long term observations of PM2.5-associated PAHs: Comparisons between normal and episode days[J]. Atmospheric Environment,2015-01-01,104