| 项目编号: | 1649212
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| 项目名称: | Phenol Reactions in Aqueous Particles as a Source of Secondary Organic Aerosol |
| 作者: | Cort Anastasio
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| 承担单位: | University of California-Davis
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| 批准年: | 2017
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| 开始日期: | 2017-04-15
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| 结束日期: | 2020-03-31
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| 资助金额: | 800903
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| 资助来源: | US-NSF
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| 项目类别: | Continuing 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: | phenol
; particle
; phenol partition
; field
; large source
; biomass burning
; fire plume
; aqueous phase
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| 英文摘要: | It is established that wildfires and biomass burning emit particles directly that harm human health. It has recently been recognized that reactive gases emitted by burning wood can also convert to particles, and this indirect particle production would exacerbate the exposure problem for humans. The work will investigate the mechanisms by which key reactive gases in fire plumes react in the laboratory and field to quantify the indirect production of particles and estimate its impacts on human exposure.
This research builds on recent laboratory work that phenols emitted by biomass burning in large amounts could provide a large source of secondary particles via reactions in cloud and fog drops since the phenols partition into the aqueous phase relatively easily. However, secondary particle enhancement has not yet been observed in the field presumably due to the effects of dilution and evaporation of semi-volatile gases during aging of fire plumes. The project will investigate if and how targeted phenols that are reactive gases present in significant amounts in biomass burning effluents can be converted to particles. The research will isolate and measure the fundamental processes in the laboratory and field and integrate them to elucidate the mechanism of phenol to particle conversion. The results will improve the assessment of the contributions of secondary particle formation in fire plumes to human exposure. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90333
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Cort Anastasio. Phenol Reactions in Aqueous Particles as a Source of Secondary Organic Aerosol. 2017-01-01.
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