DOI: 10.1016/j.atmosenv.2013.12.008
Scopus记录号: 2-s2.0-84892975276
论文题名: Fine particles (PM2.5) at a CAWNET background site in Central China: Chemical compositions, seasonal variations and regional pollution events
作者: Zhang F ; , Cheng H ; -R ; , Wang Z ; -W ; , Lv X ; -P ; , Zhu Z ; -M ; , Zhang G ; , Wang X ; -M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 86 起始页码: 193
结束页码: 202
语种: 英语
英文关键词: Back trajectory
; Background
; Long-range atmospheric transport
; PM2.5
; Pollution events
; Potential source contribution function (PSCF)
Scopus关键词: Average concentration
; Back trajectories
; Background
; Chemical compositions
; Long-range atmospheric transports
; National ambient air quality standards
; Potential source contribution function
; Seasonal variation
; Atmospheric movements
; Storms
; Pollution
; ammonia
; calcium ion
; carbon
; chemical compound
; ion
; magnesium ion
; nitrate
; organic carbon
; sodium ion
; sulfate
; water
; air quality
; air sampling
; back analysis
; biomass burning
; carbon
; chemical composition
; haze
; long range transport
; particulate matter
; pollutant source
; seasonal variation
; size distribution
; trajectory
; air analysis
; air pollutant
; air pollution
; air quality standard
; air sampling
; ambient air
; article
; atmosphere
; autumn
; biomass
; chemical composition
; China
; concentration (parameters)
; haze
; Mongolia
; particle size
; particulate matter
; priority journal
; seasonal variation
; solubility
; spring
; summer
; winter
; 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: Fine particle (PM2.5) samples were collected at Jinsha (JSH), a regional background China Atmosphere Watch Network (CAWNET) site in Central China from March 2012 to March 2013. The mass concentrations of water-soluble inorganic ions (WSIIs), organic carbon (OC) and elemental carbon (EC) in PM2.5 were measured. The average PM2.5 mass concentration was 48.7±26.9μgm-3, exceeding the Chinese National Ambient Air Quality Standards (NAAQS) (35μgm-3), implying that PM2.5 is a pollutant of regional concern in Central China. The average concentrations of total WSIIs, OC and EC were 26.1±18.8, 7.5±3.5 and 0.7±0.5μgm-3, accounting for 53.5%, 15.1% and 1.5% of the PM2.5 concentrations at JSH, respectively. Clear seasonal variations in PM2.5 and the levels of its main chemical species were observed in the following order: winter>autumn>spring>summer. Backward air trajectory analysis and potential source contribution function (PSCF) analysis implied that the areas north and northeast of JSH contributed significantly to the levels of SO42-, NO3-, NH4+ and OC, while sandstorms originating from Mongolia and traveling across Northwest China may have contributed significantly to the levels of Na+, Ca2+, and Mg2+ in PM2.5 at JSH. Two pollution events, related to regional biomass burning and haze, respectively, were recorded at JSH during the sampling campaign. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80733
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Environmental Engineering, School of Resource and Environmental Science, Wuhan University, Wuhan 430069, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Huazhong University of Science and Technology Wuchang Branch, Wuhan 430064, China
Recommended Citation:
Zhang F,, Cheng H,-R,et al. Fine particles (PM2.5) at a CAWNET background site in Central China: Chemical compositions, seasonal variations and regional pollution events[J]. Atmospheric Environment,2014-01-01,86