Collaborative Research: Comprehensive Characterization of Atmospheric Organic Carbon over Multiple Generations of Oxidation

合作研究：多代氧化过程中大气有机碳的综合表征

• 批准号: 1638543
• 负责人: Manjula Canagaratna
• 金额: $ 22.48万
• 依托单位: Aerodyne Research Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1638543&HistoricalAwards=false
• 关键词: Collaborative; Research; Comprehensive; Characterization; Atmospheric

This project supports laboratory studies of the chemical evolution of organic carbon in the atmosphere. Research is ongoing to investigate how key properties of organic compounds change as they undergo multiple generations of atmospheric aging. This effort will provide significant insight into the distribution of carbon across species and into the formation of organic aerosol in the atmosphere. This research will help improve current models of air quality and climate change.The specific scientific objectives of this project are as follows: (1) The development of laboratory approaches and capabilities for chemically characterizing all carbon within a laboratory aging context, using a range of speciated and ensemble techniques; and (2) Application of these approaches to key atmospheric aging systems in order to track the evolution of organic carbon within both the gas and particle phases. Recent advances in the characterization of atmospheric organic species, including traditionally difficult-to-measure species such as multifunctional oxidized VOCs (OVOCs) and semivolatile and intermediate-volatility organic compounds (S/IVOCs), enable carbon closure studies to be carried out in the laboratory for the first time.

该项目支持对大气中有机碳的化学演变进行实验室研究。 研究正在进行中，以调查有机化合物的关键特性如何在经历多代大气老化时发生变化。 这一努力将为了解碳在物种间的分布和大气中有机气溶胶的形成提供重要的见解。 这项研究将有助于改进目前的空气质量和气候变化模型，该项目的具体科学目标如下：（1）发展实验室方法和能力，利用一系列物种形成和集合技术，在实验室老化范围内对所有碳进行化学表征;以及（2）将这些方法应用于关键的大气老化系统，以跟踪气相和颗粒相内有机碳的演变。 最近的进展，在表征大气中的有机物种，包括传统上难以测量的物种，如多功能氧化挥发性有机化合物（OVOCs）和半挥发性和中间挥发性有机化合物（S/IVOCs），使碳封闭研究首次在实验室中进行。