DOI: 10.1016/j.atmosenv.2014.08.020
Scopus记录号: 2-s2.0-84904090190
论文题名: Source contributions to primary and secondary inorganic particulate matter during a severe wintertime PM2.5 pollution episode in Xi'an, China
作者: Wang D ; , Hu J ; , Xu Y ; , Lv D ; , Xie X ; , Kleeman M ; , Xing J ; , Zhang H ; , Ying Q
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 97 起始页码: 182
结束页码: 194
语种: 英语
英文关键词: EDGAR
; Particulate matter
; Source apportionment
; WRF/CMAQ
; Xi'an
Scopus关键词: Air quality
; Coal combustion
; Dust
; Housing
; Incineration
; Mass transportation
; Sulfur dioxide
; EDGAR
; Particulate Matter
; Source apportionment
; WRF/CMAQ
; Xi'an
; Nitrates
; ammonia
; nitrate
; organic carbon
; sulfate
; air quality
; atmospheric pollution
; carbon
; concentration (composition)
; emission
; environmental monitoring
; inorganic matter
; pollutant source
; sulfate
; anthropogenic source
; biogenic emission
; dust
; inorganic compound
; particulate matter
; size distribution
; spatiotemporal analysis
; aerosol
; air pollution
; air pollution control
; air quality
; article
; atmospheric transport
; chemical reaction
; China
; dry deposition
; dust
; energy consumption
; energy yield
; exhaust gas
; industrial area
; particulate matter
; priority journal
; secondary organic aerosol
; traffic and transport
; urban area
; wet deposition
; winter
; Article
; biomass
; concentration (parameters)
; environmental monitoring
; industry
; waste
; winter
; China
; Shaanxi
; Xian
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: Average PM2.5 concentrations of ~250μgm-3 and peak concentrations of ~500μgm-3 were observed in Xi'an, the largest city in Northwest China during an extreme event in January 2013. The source-oriented versions of the Community Multi-scale Air Quality (CMAQ) model with anthropogenic emissions from Emissions Database for Global Atmospheric Research (EDGAR) were used to study the source contributions of six different source categories including energy production, industries, transportation, residential activities, "other" (agriculture, biomass, waste burning, and biogenic sources), and windblown dust to primary and secondary inorganic PM2.5 (nitrate and sulfate) during this episode. The model generally captured the variation and magnitude of PM2.5 concentrations at monitoring sites. The monthly average concentration of the predicted PM2.5 in Xi'an was >200μgm-3, comparing favorably with the measurement of ~250μgm-3. Predicted concentrations of elemental carbon (EC), organic aerosol (OA), sulfate, nitrate, and ammonium were 6, 35, 18, 22, and 12μgm-3, respectively. Chemically unresolved PM2.5 components (PM2.5 Other) were ~80μgm-3. Industries and residential activities dominated EC, organic carbon (OC) and PM2.5 Other, contributing 85%, 95%, and 83%, respectively. Energy production (mainly coal combustion) was the dominating source for secondary nitrate, contributing 46%. Other local and upwind sources were also important, contributing 43% and 11% of total nitrate, respectively. Primary sulfate was ~10μgm-3 in vicinity surrounding point sources. Secondary sulfate from upwind sources was also important with concentrations of ~4-5μgm-3. Secondary sulfate formed by SO2 emitted from local sources was dominated by energy production. Based on the contributions of different sources to primary components and secondary nitrate and sulfate, the contributions of different sources to PM2.5 total mass in Xi'an during the extremely polluted months are: energy 5%, industries 58%, transportation 2%, residential activities 16%, dust 4%, and other (including other components, inexplicit sources, and upwind sources) 15%. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80964
Appears in Collections: 气候变化事实与影响
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作者单位: College of Forestry, Northwest A andF University, Yangling, Shaanxi 712100, China; Department of Civil and Environmental Engineering, University of California, Davis, CA 95616, United States; Atmospheric Modeling and Analysis Division, National Exposure Research Laboratory, US Environmental Protection Agency, Research Triangle Park, NC 27711, United States; Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, United States; Zachry Department of Civil Engineering, Texas A andM University, College Station, TX 77843, United States
Recommended Citation:
Wang D,, Hu J,, Xu Y,et al. Source contributions to primary and secondary inorganic particulate matter during a severe wintertime PM2.5 pollution episode in Xi'an, China[J]. Atmospheric Environment,2014-01-01,97