Instrumentation for Atmospheric Sulfur Compounds

大气硫化合物仪表

• 批准号: 0540663
• 负责人: Alan Bandy
• 金额: $ 4.2万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0540663&HistoricalAwards=false
• 关键词: Instrumentation; Atmospheric; Sulfur; Compounds

This project supports the continued development of several atmospheric pressure ionization mass spectrometers (APIMS) for airborne measurements of a suite of sulfur compounds, including dimethyl sulfide (DMS) and several of its oxidation products. The intent is to deploy these instruments in the near future in a field study of sulfur chemistry and aerosols. The oceans are the main source of DMS, which is oxidized in the atmosphere through pathways that are still poorly understood. Among the products of DMS oxidation are sulfuric acid and other low vapor pressure sulfur compounds, which can lead to the formation of new particles, or growth and transformation of existing atmospheric aerosols, including cloud condensation nuclei. The importance of these processes is in their role in aerosol and cloud formation, which in turn have significant direct and indirect impacts on climate.This project will support important infrastructure in the field of atmospheric chemistry, and will also provide a training opportunity for an undergraduate student.

该项目支持继续开发几个大气压电离质谱仪(APIMS)，用于航空测量一系列硫化物，包括二甲基硫化物(DMS)及其几种氧化产物。其目的是在不久的将来将这些仪器部署在硫磺化学和气溶胶的实地研究中。海洋是DMS的主要来源，DMS在大气中通过仍然鲜为人知的途径被氧化。DMS氧化的产物包括硫酸和其他低蒸汽压硫化物，它们可以导致新粒子的形成，或导致现有大气气溶胶的生长和转化，包括云凝结核。这些过程的重要性在于它们在气溶胶和云的形成中所起的作用，这反过来又对气候产生重大的直接和间接影响。该项目将支持大气化学领域的重要基础设施，并将为本科生提供培训机会。