Applications of Proton Transfer Mass Spectrometry to Chamber Studies of Gas Phase Oxidation Processes

质子转移质谱在气相氧化过程室研究中的应用

• 批准号: 2296363
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2296363
• 关键词: Applications; Proton; Transfer; Mass; Spectrometry

Studies of complex reaction mechanisms, such as those involved in the atmospheric oxidation of volatile organic compounds (VOCs) emitted by anthropogenic and biogenic sources, require sensitive and selective detection techniques which are able to respond to changes in concentrations on rapid timescales. Simulation chambers equipped with such instrumentation enable detailed kinetic and mechanistic knowledge of the atmospheric chemistry required to understand air quality and climate. In this project, the capabilities of the Highly Instrumented Reactor for Atmospheric Chemistry (HIRAC) will be enhanced by coupling a proton transfer mass spectrometer (PTrMS), enabling measurements of a greater number of primary species and oxidation products, and on a faster timescale, than is currently possible. This work will make detailed investigations of the kinetics and mechanisms of gas phase oxidation processes involved in the atmospheric chemistry of VOCs such as isoprene and 2-methyl-3-butenol (MBO) emitted by biogenic sources, as well as those emitted by anthropogenic sources relating to vehicle use.

对复杂反应机制的研究，例如涉及人为和生物源排放的挥发性有机化合物（VOCs）的大气氧化的研究，需要能够在快速时间尺度上对浓度变化作出反应的敏感和选择性检测技术。配备这种仪器的模拟室能够提供了解空气质量和气候所需的大气化学的详细动力学和机械知识。在这个项目中，大气化学高仪器化反应器（HIRAC）的能力将通过耦合质子传递质谱仪（PTrMS）得到增强，从而能够在比目前更快的时间尺度上测量更多的主要物质和氧化产物。这项工作将详细研究生物源排放的挥发性有机化合物（如异戊二烯和2-甲基-3-丁烯醇（MBO））的大气化学中涉及的气相氧化过程的动力学和机制，以及与车辆使用有关的人为源排放的挥发性有机化合物。