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

基本信息

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

项目摘要

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的重要社会问题直接相关。该项目将提高对环境颗粒物负担的理解，尤其是在城市地区。这项努力将直接支持两名研究生。此外，硕士的学生和本科生将参加研究，从而为科学，技术，工程和数学（STEM）领域的成功职业做好准备。该项目支持对挥发性化学产品（VCP）的能力进行调查，例如农药，涂料，印刷油墨，粘合剂，清洁剂和个人护理产品，有助于在城市地区的大气层中形成小颗粒或次生有机气溶胶（SOA）。选定数量的VCP将在实验室烟雾室中反应，并测量SOA的形成和化学组成。该结果将用于化学传输模型来预测美国城市中的SOA形成。研究将解决的两个科学问题是：（1）：（1）由VCP的氧化形成的SOA的质量产量和化学成分是什么，以及随VCP分子结构的产量如何变化？（2）VCP SOA对环境SOA负担以及从环境气溶胶质谱仪数据的因子分析确定的氧化有机气溶胶因子有什么贡献？除了量化各种VCP的SOA产量和成分外，科学家还将开发VCP SOA参数化，准备使用挥发性基集合纳入化学传输模型。他们还建议鉴定由VCP氧化和VCP SOA示踪剂形成的高度氧化多功能物种，用于识别环境数据库中的SOA。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识智能和更广泛影响的评估来通过评估来获得支持的。