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

RUI：合作研究：含氧多环芳烃在环境界面上的光降解

• 批准号: 1213623
• 负责人: Donald Dabdub
• 金额: $ 8万
• 依托单位: University of California-Irvine
• 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 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1213623&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, directly addressing the nation's critically-low number of students preparing for careers in the chemical sciences.

美国国家科学基金会化学部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教授合作研究氧化聚芳烃（oxy-PAH）的化学动力学在颗粒物的替代品，以阐明这种化学对低层大气的氧化能力的影响。光解激发的氧-PAH容易将能量转移到基态分子氧，产生活性氧物质单线态分子氧。这一提议的前提是，这些反应可能发生在老化的颗粒物质上，因此影响低层大气的氧化能力。该提案的创新方面包括将新兴的定量HPLC/MS技术应用于oxy-PAH的化学动力学和气体混合物的MS分析学科。这是一个跨学科的合作项目，一个非博士学位的化学教授和一个非博士学位的化学教授。授予西班牙裔服务机构和当地博士学位的工程学教授。授予机构。这种模式通过同时推进科学和开发人力资源来最大限度地利用资源。这项研究的成功将改善空气质量模型，从而影响数百万人，特别是生活在城市地区的人。将来自科学领域代表性不足的群体的本科生包括在内，反映了加州州立大学-洛杉矶的人口，这将是一个高度优先事项。该项目有可能增加选择化学科学职业并接受研究生教育的代表性不足的学生人数，直接解决全国准备从事化学科学职业的学生人数极低的问题。