globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2016.11.010
Scopus记录号: 2-s2.0-84999864926
论文题名:
Spatially resolved intake fraction estimates for primary and secondary particulate matter in the United States
作者: Lamancusa C; , Parvez F; , Wagstrom K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 150
起始页码: 229
结束页码: 237
语种: 英语
英文关键词: Intake fraction ; Particulate matter ; Regional air pollution modeling ; Source apportionment
Scopus关键词: Air quality ; Emission control ; Particulate emissions ; Pollution ; Population statistics ; Comprehensive air quality model with extensions ; Intake fraction ; Particulate Matter ; Population densities ; Regional air pollution ; Regional air quality modeling ; Secondary particulate matters ; Source apportionment ; Air intakes ; chemical compound ; sulfate ; air quality ; atmospheric pollution ; emission inventory ; health impact ; particulate matter ; pollutant source ; population density ; regional pattern ; sulfate ; air quality ; Article ; controlled study ; environmental exposure ; inhalation ; particulate matter ; pollutant ; population density ; priority journal ; season ; secondary organic aerosol ; United States ; winter ; 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: This study uses intake fraction, the fraction of emissions that are inhaled from a given source, to quantify how emissions from different regions proportionally contribute to human exposure to both primary and secondary particulate matter species. The intake fraction for secondary species is defined using the common atomic constituents between precursor species and products, allowing estimates to include both primary and secondary species. The Particulate Matter Source Apportionment Technology (PSAT) in the Comprehensive Air Quality Model with Extensions (CAMx) regional air quality model is used to calculate the intake fraction for twenty-five source regions throughout the contiguous United States over four seasons. The calculations use spatially explicit emissions and population density to more accurately capture the variation in intake fraction between regions. The spatially explicit emissions allow for the calculation of spatial trends and variations within the intake fraction. More specifically it allows for the calculation of the amount of intake that occurs within a given distance of the emissions source or source region. Based on the results sulfate inhalation occurs over larger distances than other particulate matter species. For most regions, a substantial fraction (>75%) of the inhalation occurs within 50 km for all seasons, demonstrating that efforts to reduce emissions will have the largest health impact on the local community. Furthermore the distance over which 75% of the inhalation occurs increases by 20% for all species during the winter and a larger percentage of pollutants emitted during the winter are inhaled relative to pollutants emitted during other seasons. This demonstrates that emission reductions during the winter will have a greater impact on health than reductions during other seasons. © 2016 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82222
Appears in Collections:气候变化事实与影响

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作者单位: Department of Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Unit 3222, Storrs, CT, United States

Recommended Citation:
Lamancusa C,, Parvez F,, Wagstrom K. Spatially resolved intake fraction estimates for primary and secondary particulate matter in the United States[J]. Atmospheric Environment,2017-01-01,150
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