Secondary Organic Aerosol Production from Volatile Chemical Products

利用挥发性化学产品生产二次有机气溶胶

• 批准号: 1848324
• 负责人: Albert Presto
• 金额: $ 59.99万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-02-01 至 2023-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1848324&HistoricalAwards=false
• 关键词: Secondary; Organic; Aerosol; Production; Volatile

Particulate matter is directly linked to important societal problems of public health and climate. This project will improve understanding of the ambient particulate matter burden, especially in urban areas. The effort will directly support two graduate students. In addition Master's students and undergraduate students will participate in the research, thus preparing them for successful careers in Science, Technology, Engineering and Math (STEM) fields. This project supports an investigation into the ability of volatile chemical products (VCP), such as pesticides, coatings, printing inks, adhesives, cleaning agents, and personal care products, to contribute to the formation of small particles, or secondary organic aerosol (SOA), in the atmosphere of urban areas. A selected number of VCPs will be reacted in a laboratory smog chamber and the formation and chemical composition of SOA will be measured. The results will be used in chemical transport models to predict the formation of SOA in U.S. cities.The two science questions that will be addressed by the research are: (1) What are the mass yields and chemical composition of SOA formed from oxidation of VCPs, and how do the yields change with VCP molecular structure? and (2) What is the contribution of VCP SOA to the ambient SOA burden and the oxygenated organic aerosol factors determined from factor analysis of ambient aerosol mass spectrometer data? In addition to quantifying SOA yields and compositions from various VCPs, scientists will develop VCP SOA parameterizations ready for incorporating into chemical transport models using the volatility basis set. They also suggest to identify highly oxygenated multifunctional species formed from the VCP oxidation and VCP SOA tracer ions for use in identifying SOA in ambient databases.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

颗粒物与公共卫生和气候等重要社会问题直接相关。该项目将增进对环境颗粒物负担的了解，特别是在城市地区。这项工作将直接支持两名研究生。此外，硕士生和本科生也将参与这项研究，从而为他们在科学、技术、工程和数学 (STEM) 领域的成功职业生涯做好准备。该项目支持对杀虫剂、涂料、印刷油墨、粘合剂、清洁剂和个人护理产品等挥发性化学产品 (VCP) 形成小颗粒或二次有机气溶胶 (SOA) 的能力进行调查），在城市地区的气氛中。选定数量的 VCP 将在实验室烟雾室中发生反应，并测量 SOA 的形成和化学成分。研究结果将用于化学传输模型，以预测美国城市 SOA 的形成。该研究将解决的两个科学问题是：（1）VCP 氧化形成的 SOA 的质量产量和化学成分是多少，以及产率如何随 VCP 分子结构变化？ (2) VCP SOA 对环境 SOA 负荷和环境气溶胶质谱仪数据因子分析确定的含氧有机气溶胶因子的贡献是什么？除了量化各种 VCP 的 SOA 产量和成分之外，科学家还将开发 VCP SOA 参数化，以便使用波动性基组将其纳入化学输运模型中。他们还建议识别由 VCP 氧化和 VCP SOA 示踪离子形成的高含氧多功能物质，用于识别环境数据库中的 SOA。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和更广泛的评估进行评估，被认为值得支持。影响审查标准。

项目成果

Urban Oxidation Flow Reactor Measurements Reveal Significant Secondary Organic Aerosol Contributions from Volatile Emissions of Emerging Importance

城市氧化流反应器测量揭示了新兴重要性的挥发性排放物对二次有机气溶胶的重要贡献

• DOI: 10.1021/acs.est.9b06531
• 发表时间: 2019-12
• 期刊: Environmental Science & Technology
• 影响因子: 11.4
• 作者: Shah, Rishabh U.;Coggon, Matthew M.;Gkatzelis, Georgios I.;McDonald, Brian C.;Tasoglou, Antonios;Huber, Heinz;Gilman, Jessica;Warneke, Carsten;Robinson, Allen L.;Presto, Albert A.
• 通讯作者: Presto, Albert A.

Limited Secondary Organic Aerosol Production from Acyclic Oxygenated Volatile Chemical Products

无环含氧挥发性化学产品生产的二次有机气溶胶有限

• DOI: 10.1021/acs.est.1c07354
• 发表时间: 2022-04-08
• 期刊: Environmental Science & Technology
• 影响因子: 11.4
• 作者: Mackenzie B Humes;Mingyi Wang;Sunhye Kim;J. Machesky;D. Gentner;A. Robinson;N. Donahue;A. Presto
• 通讯作者: A. Presto