| 项目编号: | 1744353
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| 项目名称: | Interfacial Fenton Chemistry on Aqueous Organic Aerosols |
| 作者: | Michael Hoffmann
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| 承担单位: | California Institute of Technology
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| 批准年: | 2017
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| 开始日期: | 2017-10-01
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| 结束日期: | 2020-09-30
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| 资助金额: | 643604
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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: | fenton chemistry
; air-aqueous interface
; aqueous/water soluble organic solution
; interfacial reaction
; typical organic substrate
; secondary organic aerosol
; organic matter
; organic material
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| 英文摘要: | This research is focused on the study of how gas-phase species are converted to and processed in tropospheric aerosols. The proposed experiments represent an innovative approach to understanding the nature of the chemical interactions between reactive gases and organic matter in the presence of transition metal ions at air-aqueous interfaces. The results are expected to provide new information on the formation and evolution of tropospheric aerosols, especially those that are known to have adverse health impacts.
This effort includes a systematic study of gas-liquid reactions taking place on the surface of aqueous and aqueous/water soluble organic solutions of selected substrates, exposed to the major gaseous O3, H2O2 and NO2 oxidants in ambient air under experimental conditions relevant to the troposphere. The central aim is to map the dependence of the extent of Fenton chemistry on: (1) pH, (2) the nature of typical organic substrates, either alone or in synthetic mixtures, (3) the presence of ligands representative of those found in secondary organic aerosol, as well as sequestering ligands, and (4) the presence of Cu ions. The project will provide new data to improve models of interfacial reactions on organic material in the atmosphere. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/88720
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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: | |
Michael Hoffmann. Interfacial Fenton Chemistry on Aqueous Organic Aerosols. 2017-01-01.
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