| 项目编号: | 1405014
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| 项目名称: | Source Apportionment of Anthropogenic Secondary Organic Aerosol |
| 作者: | Elizabeth Stone
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| 承担单位: | University of Iowa
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| 批准年: | 2013
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| 开始日期: | 2014-08-15
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| 结束日期: | 2018-07-31
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| 资助金额: | USD349999
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | source
; secondary organic aerosol
; source apportionment study
; anthropogenic input
; other source
; organic compound
; source contribution
; ambient aerosol sampling
; anthropogenic volatile organic compound
; anthropogenic soa source characteristic
; fine particle
; anthropogenic activity
; source level
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| 英文摘要: | Secondary organic aerosols (SOA) are fine particles that arise from the oxidation of primary (volatile; VOC) organic compounds in the atmosphere. Secondary organic aerosols can have source contributions from both natural (e.g. from plants) and man-made (e.g. from unburnt hydrocarbons in automotive tailpipe emissions) sources. Source apportionment studies benefit society by improving our understanding of the sources of fine particulate matter, which has been shown to be correlated with excess morbidity, and is present in the air we breathe
The science objectives of this research project will determine the anthropogenic SOA source characteristics, and their impact on fine particle concentrations (PM2.5; particulate matter less than 2.5microns) in urban areas relative to biogenic and other sources. A field-based approach will target ambient aerosol sampling at a number of urban locations: Houston, TX, Atlanta, GA, Milwaukee, WI. These are all sites where prior studies have established a mix of atmospheric loadings of anthropogenic volatile organic compounds (VOC) and biogenic compounds, allowing their respective contribution to SOA formation to be estimated. Anthropogenic activities that contribute to dangerous levels of criteria pollutants such as PM2.5 need to be identified and accurately quantified to source level before they can sensibly become targets of regulation or mitigation aimed at reducing ambient levels of fine particles. The approach used in this study centers on analysis of aromatic sulfonates, photoxidation products from aromatic VOCs, as chemical tracers of anthropogenic inputs into SOA. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96031
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Elizabeth Stone. Source Apportionment of Anthropogenic Secondary Organic Aerosol. 2013-01-01.
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