DOI: 10.1016/j.atmosenv.2015.02.022
Scopus记录号: 2-s2.0-84922466282
论文题名: The variation of chemical characteristics of PM2.5 and PM10 and formation causes during two haze pollution events in urban Beijing, China
作者: Gao J ; , Tian H ; , Cheng K ; , Lu L ; , Zheng M ; , Wang S ; , Hao J ; , Wang K ; , Hua S ; , Zhu C ; , Wang Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 107 起始页码: 1
结束页码: 8
语种: 英语
英文关键词: Beijing
; Elemental species
; Haze
; PM10
; PM2.5
; Water soluble inorganic ions (WSIIs)
Scopus关键词: Air quality
; Atmospheric movements
; Chemical analysis
; Dust
; Ions
; Pollution
; Trajectories
; Wind
; Anthropogenic pollution
; Back trajectory analysis
; Beijing
; Elemental species
; Haze
; High relative humidities
; Meteorological condition
; Water soluble inorganic ions
; Air pollution
; aluminum
; ammonia
; antimony
; arsenic
; cadmium
; calcium ion
; chloride ion
; chromium
; cupric ion
; iron
; lead
; magnesium
; manganese
; nickel
; nitrate
; potassium ion
; selenium
; sodium
; sulfate
; zinc
; accumulation rate
; aerosol
; air quality
; anthropogenic source
; atmospheric pollution
; chemical composition
; concentration (composition)
; formation mechanism
; haze
; particulate matter
; relative humidity
; urban area
; wind velocity
; aerosol
; air analysis
; air pollutant
; air pollution
; air quality
; air sampling
; airborne particle
; Article
; atmosphere
; autumn
; chemical composition
; China
; concentration (parameters)
; controlled study
; dust
; haze
; humidity
; meteorology
; particle size
; particulate matter
; priority journal
; velocity
; wind
; winter
; Beijing [China]
; China
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: Airborne particles in urban Beijing during haze days and normal days were collected and analyzed in the autumn and winter seasons to reveal the chemical characteristics variations of air pollution. The air quality in haze days was substantially worse than that in normal days. Both the relatively low wind speed and high relative humidity were in favor of the accumulation of pollution species and new formation of secondary PM2.5 in the atmosphere. Elevated concentrations of elements and water-soluble inorganic ions were found on haze days for both PM10 and PM2.5. Particularly, the crustal element, such as Fe, in both PM10 and PM2.5 were substantially higher in autumn normal days and winter haze days than those in autumn haze days and winter normal days, indicating that the abundance of Fe in autumn haze days mainly be originated from crustal dust while in winter haze days it might be primarily emitted from anthropogenic sources (iron and steel smelting) instead of road dust. Secondary ion species (SO42-, NO3-, NH4+) in particles were generated much more during haze episodes, and contributed a higher proportion in PM2.5 than in PM10 during the two sampling periods. Moreover, HYSPLIT model was used to explain the possible transport of airborne particles from distant sources. By comparing with south-type trajectory, west-type trajectory entrained larger amounts of primary crustal pollutants, while, south-type trajectory was comprised of a higher mass of anthropogenic pollution species. The results of back trajectory analysis indicated that the elevated concentration of aerosol and its chemical components during haze days might be caused by the integrated effects of accumulation under stagnant meteorological condition and the transport emissions of pollutants from anthropogenic sources surrounding Beijing city. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81880
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Joint Laboratory of Environmental Simulation and oPollution Control, School of Environment, Beijing Normal University, Beijing, China; School of Environment, Henan Normal University, Henan Key Lab. for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Xinxiang, China; State Key Joint Laboratory of Environmental Simulation and oPollution Control, College of Environmental Science and Engineering, Peking University, Beijing, China; State Key Joint Laboratory of Environmental Simulation and oPollution Control, School of Environment, Tsinghua University, Beijing, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, China
Recommended Citation:
Gao J,, Tian H,, Cheng K,et al. The variation of chemical characteristics of PM2.5 and PM10 and formation causes during two haze pollution events in urban Beijing, China[J]. Atmospheric Environment,2015-01-01,107