DOI: 10.1016/j.atmosenv.2017.04.039
Scopus记录号: 2-s2.0-85018326290
论文题名: Spatial and temporal source apportionment of PM2.5 in Georgia, 2002 to 2013
作者: Zhai X ; , Mulholland J ; A ; , Russell A ; G ; , Holmes H ; A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 161 起始页码: 112
结束页码: 121
语种: 英语
英文关键词: Air quality
; CMB
; Health impacts
; National Emissions Inventory
; PM2.5
; Source apportionment
Scopus关键词: Air pollution
; Air quality
; Biomass
; Carbon
; Coal
; Coal dust
; Crashworthiness
; Dust
; Mobile power plants
; Nitrates
; Organic carbon
; Particles (particulate matter)
; Particulate emissions
; Pollution
; Rural areas
; Sulfur compounds
; Urban growth
; Biomass burning emissions
; Chemical mass balance receptor models
; Health impact
; Heavy duty diesel vehicles
; Light duty gasoline vehicles
; National emissions inventories
; Secondary organic carbon
; Source apportionment
; Coal combustion
; gasoline
; air quality
; ambient air
; biomass burning
; chemical mass balance
; concentration (composition)
; emission inventory
; health impact
; neutralization
; particulate matter
; pollution effect
; pollution monitoring
; source apportionment
; spatiotemporal analysis
; air pollution control
; air quality
; Article
; biomass
; combustion
; electric power plant
; limit of detection
; particulate matter
; priority journal
; spatiotemporal analysis
; uncertainty
; Georgia
; United States
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 Chemical Mass Balance (CMB) receptor model was applied to estimate PM2.5 source impacts over Georgia from 2002 to 2013 using ambient PM2.5 species concentration data from 13 sites. Measurements of 19 PM2.5 species were used as inputs along with measurement-based source profiles to estimate the impacts of nine sources, including both primary components (from heavy duty diesel vehicle, light duty gasoline vehicle, biomass burning, coal combustion, and suspended dust sources) and secondary pollutants (ammonium sulfate, ammonium bisulfate, ammonium nitrate, and secondary organic carbon). From 2002 to 2013, PM2.5 total mass decreased from 13.8 μg/m3 to 9.2 μg/m3 averaged across all sites, a 33% decrease. Largest decreases were observed for secondary sulfate and nitrate species (58% and 44%, respectively). The amount of neutralization by ammonium did not change substantially over the time period in spite of substantial decreases in sulfate and nitrate concentrations. Total mobile source impacts decreased more at urban sites (39%) than rural sites (23%), whereas biomass burning decreased more at rural sites (34%) than urban sites (27%). The estimated central-site source impacts are found to spatially represent large areas for secondary pollutants, smaller areas for biomass burning and dust, and very local areas for mobile sources and coal combustion. Trends from the National Emissions Inventory were compared with the annual trends of mobile source impacts, coal combustion impacts, and sulfate concentrations, resulting in statistically significant positive trends with Pearson R2 of 0.80, 0.64, and 0.79, respectively. Results presented here suggest that PM2.5 reductions in Georgia and the Southeast have been achieved by control of both stationary and mobile sources, and that PM2.5 is comprised of increasing fractions of biomass burning emissions and suspended dust. The temporal trends of source impacts at each site adds information about source changes beyond the every-three-year emission inventories for evaluation of emission-based model results. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82483
Appears in Collections: 气候变化事实与影响
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作者单位: School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, United States; Atmospheric Sciences Program, Department of Physics, University of Nevada, Reno, United States
Recommended Citation:
Zhai X,, Mulholland J,A,et al. Spatial and temporal source apportionment of PM2.5 in Georgia, 2002 to 2013[J]. Atmospheric Environment,2017-01-01,161