RUI: Collaborative Research on Photodegradation of Oxygenated Polycyclic Aromatic Hydrocarbons on Environmental Interfaces

RUI：含氧多环芳烃在环境界面光降解的合作研究

• 批准号: 1213639
• 负责人: Krishna Foster
• 金额: $ 27万
• 依托单位: California State L A University Auxiliary Services Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-10-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1213639&HistoricalAwards=false
• 关键词: RUI; Collaborative; Research; Photodegradation; Oxygenated

The Environmental Chemical Sciences Program in the Chemistry Division at the National Science Foundation supports Professors Krishna Foster of California State University- Los Angeles and Donald Dabdub of the University of California- Irvine in a collaborative effort that will investigate the chemical kinetics of oxy-polyaromatic hydrocarbons (oxy-PAH) in surrogates of particulate matter to elucidate the impact of this chemistry on the oxidizing capacity of the lower atmosphere. Photolytically excited oxy-PAH readily transfer energy to ground state molecular oxygen, producing the reactive oxygen species singlet molecular oxygen. This proposal is based on the premise that these reactions may take place on aged particulate matter, and consequently, impacts the oxidation capacity of the lower atmosphere. Innovative aspects of the proposal include the application of emerging quantitative HPLC/MS techniques for oxy-PAH to the discipline of chemical kinetics and MS analysis of gaseous mixtures. This is an interdisciplinary, collaborative project between a chemistry professor at a non-Ph.D. granting Hispanic Serving Institution and an engineering professor at a local Ph.D. granting institution. This model maximizes resources by advancing science and developing human resources simultaneously. Success of the proposed research will improve air quality models, and consequently, impact millions of people, especially those living in urban areas. The inclusion of undergraduates from groups underrepresented in the sciences, reflective of the California State University- Los Angeles population, will be a high priority. This project has the potential to increase the number of underrepresented students who select careers in the chemical sciences and pursue graduate education.

美国国家科学基金会化学部的环境化学科学项目支持加州州立大学洛杉矶分校的Krishna Foster教授和加州大学欧文分校的Donald Dabdub教授共同努力，研究颗粒物替代品中氧基多环芳烃(Oxy-PAH)的化学动力学，以阐明这种化学物质对低层大气氧化能力的影响。光解激发的氧基多环芳烃很容易将能量转移到基态分子氧上，生成活性氧单重态分子氧。这一建议的前提是，这些反应可能发生在老化的颗粒物上，从而影响低层大气的氧化能力。该提案的创新方面包括将新出现的氧-多环芳烃定量高效液相色谱/质谱学技术应用于气体混合物的化学动力学和质谱学分析。这是一个跨学科的合作项目，由非西班牙裔授予机构的一名化学教授和当地一家授予博士学位的机构的工程学教授共同完成。这种模式通过同时推进科学发展和开发人力资源来实现资源最大化。拟议研究的成功将改善空气质量模型，从而影响数百万人，特别是那些生活在城市地区的人。将反映加州州立大学洛杉矶分校人口的本科生纳入科学界代表性较低的群体，将是一个高度优先的问题。该项目有可能增加选择化学科学职业和攻读研究生教育的人数不足的学生人数。