Collaborative Research: Atmospheric Formation and Implications of Secondary Organic Aerosol from Glycols and Glycol Ethers

合作研究：乙二醇和乙二醇醚二次有机气溶胶的大气形成及其影响

• 批准号: 2041982
• 负责人: Christopher Cappa
• 金额: $ 3.51万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-05-01 至 2024-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2041982&HistoricalAwards=false
• 关键词: Collaborative; Research; Atmospheric; Formation; Implications

The goal of this research is to improve the representation of volatile chemical products (VCPs) within models that predict the formation and transport of fine particles in the atmosphere. The use of VCPs such as consumer products, pesticides, paints, and surface coatings can result in the emissions of volatile organic compounds (VOC) that lead to the formation of ozone and secondary organic aerosol (SOA). The results of this research will provide policymakers with better information to make informed decisions to mitigate the air quality, climate, and human health impacts from aerosols.In this project, the PIs plan to perform chamber experiments to comprehensively characterize the gas- and particle-phase oxidation products from the photochemical oxidation of glycols and glycol ethers. This research will advance knowledge about the fate of VCPs in the atmosphere and help to: (1) understand the role of carbon number, molecular structure, and NOx on atmospherically relevant formation of SOA from glycols and glycol ethers; (2) elucidate the composition and formation pathways for gas- and particle-phase products from photooxidation of glycols and glycol ethers; (3) determine the chemical mechanisms and parameterizations needed to represent SOA and ozone formation from VCPs in atmospheric models; and (4) identify the contribution and influence of VCP emissions on the SOA and oxidant burden in the urban atmosphere using a chemical transport model (WRF-Chem).Scientists in this project will partner with the Outreach and Education Center at Colorado State University to develop and share hands-on STEM kits for educators and middle school students to learn about atmospheric chemistry.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.

本研究的目标是提高挥发性化学产物（VCPs）在预测大气中细颗粒物形成和传输的模型中的代表性。消费品、杀虫剂、油漆和表面涂料等VCP的使用会导致挥发性有机化合物（VOC）的排放，从而形成臭氧和二次有机气溶胶（SOA）。 该研究的结果将为政策制定者提供更好的信息，以做出明智的决策，减轻气溶胶对空气质量、气候和人类健康的影响。在该项目中，PI计划进行箱实验，以全面表征乙二醇和乙二醇醚光化学氧化的气相和颗粒相氧化产物。该研究将有助于进一步了解VCPs在大气中的归宿，并有助于：（1）了解碳数、分子结构和NOx对乙二醇和乙二醇醚在大气中形成SOA的作用;（2）阐明乙二醇和乙二醇醚光氧化的气相和颗粒相产物的组成和形成途径;（3）确定在大气模型中代表VCP的SOA和臭氧形成所需的化学机制和参数化;（4）利用化学传输模型确定VCP排放对城市大气中SOA和氧化剂负荷的贡献和影响该项目的科学家将与科罗拉多州立大学的外联和教育中心合作，开发和分享-该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准。