EMBRACE-AGS-Seed: Quantification of Halogen Emission Impacts on Atmospheric Oxidation Rates in Urban Atmospheres

该 EMBRACE SEED 项目的重点是研究卤素排放及其对犹他州盐湖城大气的影响。该项目旨在通过对盐湖城地区的卤素、挥发性有机化合物及其氧化产物以及颗粒物进行高度化学形态的测量来量化卤素引发化学的程度。高水平的区域卤素排放使得该气域的大气化学成分不同于美国任何其他城市。该提案的目标是卤素化学与空气质量之间的定量关系，以便更好地了解卤素排放如何影响该地区人们的健康。本研究的目标是量化：（1）盐湖城空气流域中氯、溴和羟基自由基引发的氧化的相对量； (2) 氯和溴自由基引发的化学反应对该地区颗粒物浓度的影响。这个为期两年的项目是韦伯州立大学和 Aerodyne Research Inc. 之间的合作成果。与业界的合作将为韦伯州立大学的本科生提供最先进的大气化学仪器，在 2024 年夏季进行六周的当地现场测量，在此期间，NOAA 支持的犹他州夏季臭氧研究将对该地区的关键化学物种进行许多补充测量。韦伯州立大学肩负着双重使命：既作为一所四年制开放招生公立大学，又作为一所区域性大学公立社区学院。由于这一使命，韦伯州立大学的大多数学生都是全职工作、有家庭或追求非传统高等教育途径的本科生。该项目将直接培训和支持五名本科生，并提供用于未来本科课程和学生研究项目的数据。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

This EMBRACE SEED project is focused on the study of halogen emissions and their impacts on the atmosphere of Salt Lake City Utah. The project seeks to quantify the extent of halogen-initiated chemistry through highly chemically speciated measurements of halogens, volatile organic compounds and their oxidation products, and particulate matter in the Salt Lake City region. The high level of regional halogen emissions makes the atmospheric chemistry in this airshed different from that of any other city in the United States. This proposal targets the quantitative relationship between halogen chemistry and air quality, in order to better understand how halogen emissions might impact the health of people in the region.The objectives of this research are to quantify: (1) the relative amounts of chlorine, bromine, and hydroxyl radical-initiated oxidation in the Salt Lake City airshed; and (2) the contribution of chlorine and bromine radical-initiated chemistry to particulate matter concentrations in the region. The two-year project is a collaborative effort between Weber State University and Aerodyne Research Inc. This partnership with industry will provide Weber State undergraduates access to state-of-the-art atmospheric chemistry instrumentation for six weeks of local field measurements in the summer 2024, during which time the NOAA-supported Utah Summer Ozone Study will be making many complementary measurements of key chemical species in the region.Weber State serves a dual mission: operating both as a four-year open-enrollment public university and as a regional public community college. Because of this mission, the majority of Weber State students are undergraduates who work full time, have a family, or have pursued a non-traditional path to a higher education. This project will train and support five undergraduate students directly and provide data for use in future undergraduate courses and student research projects.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.