DOI: 10.1016/j.atmosenv.2015.08.018
Scopus记录号: 2-s2.0-84949533584
论文题名: PM2.5 pollution episode and its contributors from 2011 to 2013 in urban Shanghai, China
作者: Wang H ; L ; , Qiao L ; P ; , Lou S ; R ; , Zhou M ; , Chen J ; M ; , Wang Q ; , Tao S ; K ; , Chen C ; H ; , Huang H ; Y ; , Li L ; , Huang C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 298
结束页码: 305
语种: 英语
英文关键词: Chemical characterization
; Contribution
; Formation mechanism
; PM2.5 pollution episode
; Shanghai
Scopus关键词: Nitrates
; Chemical characterization
; Contribution
; Formation mechanism
; Pollution episodes
; Shanghai
; Pollution
; ammonia
; nitrate
; sulfate
; aerosol composition
; aerosol formation
; atmospheric pollution
; biomass burning
; concentration (composition)
; formation mechanism
; particulate matter
; pollutant source
; pollution monitoring
; spatiotemporal analysis
; urban pollution
; air particle control
; air pollution
; Article
; biomass
; carbon footprint
; chemical composition
; China
; controlled study
; dust
; online system
; priority journal
; reduction
; suspended particulate matter
; China
; Shanghai
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: Shanghai has suffered from severe fine particle (PM2.5) pollution in recent years. The characterization and formation mechanism of PM2.5 pollution episodes were investigated in the present study based on 3-year on-line measurements of PM2.5 chemical compositions with the temporal resolution of 1 h from 2011 to 2013 in Shanghai. Pollution episodes with PM2.5 mass higher than 75 μg/m3 occurred ~1400 h annually, which inserted the annual extra PM2.5 mass of 14 μg/m3 into the level of 33 μg/m3 without pollution episodes taken into account. Three kinds of typical episodes were identified as biomass burning events, suspended dust events, and fireworks events, which extra contributed ~1.5 μg/m3 relative to PM2.5 mass of clean periods. Most of pollution episodes were attributed to multiple and complex mechanisms, characterized by high contribution of the secondary inorganic components (e.g. nitrate, sulfate and ammonium) and carbonaceous matters, which dominated the monthly variations of PM2.5 mass. During the complex episodes, the increasing contribution of nitrate mass concentration to PM2.5 burden was observed. The present study highlighted the necessity to pay more attention to the secondary pollution. The reduction of precursor gases emissions was essential to mediate the severe PM2.5 pollution in Shanghai megacity. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81349
Appears in Collections: 气候变化事实与影响
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作者单位: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP), Fudan Tyndall Centre, Department of Environmental Science and Engineering, Fudan University, Shanghai, China; State Env. Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai, China; 508 Qinzhou Rd., Shanghai, China
Recommended Citation:
Wang H,L,, Qiao L,et al. PM2.5 pollution episode and its contributors from 2011 to 2013 in urban Shanghai, China[J]. Atmospheric Environment,2015-01-01,123