globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2015.01.030
Scopus记录号: 2-s2.0-84921499028
论文题名:
Passive sampling to capture the spatial variability of coarse particles by composition in Cleveland, OH
作者: Sawvel E; J; , Willis R; , West R; R; , Casuccio G; S; , Norris G; , Kumar N; , Hammond D; , Peters T; M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 105
起始页码: 61
结束页码: 69
语种: 英语
英文关键词: Computer controlled scanning electron microscopy ; PM10-2.5, particulate matter ; Single particle analysis
Scopus关键词: Electron microscopy ; Energy dispersive spectroscopy ; Lakes ; Scanning electron microscopy ; X ray spectroscopy ; Coarse particulate matter ; Computer controlled scanning electron microscopy ; Elevated concentrations ; Energy dispersive X ray spectroscopy ; Individual particles ; Mean concentrations ; Particulate Matter ; Single-particle analysis ; Particles (particulate matter) ; air and air related phenomena ; air monitoring ; air pollutant ; air sampling ; Article ; chemical analysis ; chemical composition ; coarse particle ; particulate matter ; priority journal ; roentgen spectroscopy ; scanning electron microscopy ; spatial variability ; United States ; urban area
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: Passive samplers deployed at 25 sites for three, week-long intervals were used to characterize spatial variability in the mass and composition of coarse particulate matter (PM10-2.5) in Cleveland, OH in summer 2008. The size and composition of individual particles determined using computer-controlled scanning electron microscopy with energy-dispersive X-ray spectroscopy (CCSEM-EDS) was then used to estimate PM10-2.5 concentrations (μgm-3) and its components in 13 particle classes. The highest PM10-2.5mean mass concentrations were observed at three central industrial sites (35μgm-3, 43μgm-3, and 48μgm-3), whereas substantially lower mean concentrations were observed to the west and east of this area at suburban background sites (13μgm-3 and 15μgm-3). PM10-2.5 mass and components associated with steel and cement production (Fe-oxide and Ca-rich) exhibited substantial heterogeneity with elevated concentrations observed in the river valley, stretching from Lake Erie south through the central industrial area and in the case of Fe-oxide to a suburban valley site. Other components (e.g., Si/Al-rich typical of crustal material) were considerably less heterogeneous. This work shows that some species of coarse particles are considerably more spatially heterogeneous than others in an urban area with a strong industrial core. It also demonstrates that passive sampling coupled with analysis by CCSEM-EDS is a useful tool to assess the spatial variability of particulate pollutants by composition. © 2015 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81957
Appears in Collections:气候变化事实与影响

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作者单位: The University of Iowa, Iowa City, IA, United States; US EPA, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park, NC, United States; RJ Lee Group, Inc., Monroeville, PA, United States; University of Miami, Miami, FL, United States; Oak Ridge Associated Universities, Oak Ridge, TN, United States

Recommended Citation:
Sawvel E,J,, Willis R,et al. Passive sampling to capture the spatial variability of coarse particles by composition in Cleveland, OH[J]. Atmospheric Environment,2015-01-01,105
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