Growth and Activation of Multicomponent Atmospheric Particles: The Role of Organics

多组分大气颗粒的生长和活化：有机物的作用

• 批准号: 9814116
• 负责人: Spyros Pandis
• 金额: $ 28万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-04-01 至 2002-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814116&HistoricalAwards=false
• 关键词: Growth; Activation; Multicomponent; Atmospheric; Particles

This project is an experimental study of the hygroscopic growth properties of organic carbon-containing aerosols. The studies will involve the generation of aerosols with a range of organic and mixed organic/inorganic compositions and characterization using a Tandem Differential Mobility Analyzer (TDMA) coupled to a Cloud Condensation Nuclei Counter. The experimental system includes a Scanning Electrical Mobility Spectrometer allowing detailed measurements of the fine aerosol size distribution in a time scale of seconds and the ability to produce internally or externally mixed aerosol. The properties of organic aerosol produced during the photo-oxidation of biogenic hydrocarbons will be a major focus of the proposed work.

本计画系一项有机含碳气溶胶吸湿成长特性之实验研究。 这些研究将涉及生成具有一系列有机和混合有机/无机成分的气溶胶，并使用与云凝结核计数器耦合的串联微分迁移率分析仪进行表征。 该实验系统包括一个扫描电迁移率光谱仪，允许在秒的时间尺度和产生内部或外部混合气溶胶的能力，精细的气溶胶粒度分布的详细测量。 在生物烃的光氧化过程中产生的有机气溶胶的性质将是拟议工作的一个主要重点。