Measurements of Hydroxyl Radical (OH)/Nitric Acid (HNO3) for Program for Research on Oxidants: Photochemistry, Emissions, and Transport (PROPHET)

氧化剂研究计划的羟基自由基 (OH)/硝酸 (HNO3) 测量：光化学、排放和传输 (PROPHET)

• 批准号: 0115656
• 负责人: David Tanner
• 金额: $ 21.99万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0115656&HistoricalAwards=false
• 关键词: Measurements; Hydroxyl; Radical; OH; Nitric

A recently built instrument capable of measuring atmospheric OH (hydroxyl radical), H2SO4 (sulfuric acid), and HNO3 (nitric acid) will be deployed during the 2001 Summer intensive of PROPHET (Program for Research on Oxidants: Photochemistry, Emissions, and Transport) in Northern Michigan. The measurement technique is based on chemical ionization mass spectrometry (CIMS). In earlier PROPHET campaigns, measurements using a fluorescence-based technique showed the surprising result of measurable levels of OH during the night. Deploying this fundamentally different technique could confirm the occurrence of nighttime OH under the conditions of the PROPHET site. The measurements of H2SO4 will complement ongoing aerosol measurements, and the measurements of HNO3 would complement measurements of other individual compounds in the reactive nitrogen (NOy) family.

最近构建的仪器能够测量大气OH（羟基自由基），H2SO4（硫酸）和HNO3（硝酸）（硝酸），将在2001年夏季大量的先知（氧化剂研究计划：光学，发射，发射和运输计划）中部署在北密歇根州。该测量技术基于化学电离质谱法（CIMS）。在较早的先知运动中，使用基于荧光的技术的测量结果表明了夜间可测量水平的令人惊讶的结果。在先知遗址的条件下，部署这种根本不同的技术可以证实夜间OH的发生。 H2SO4的测量值将补充正在进行的气溶胶测量值，HNO3的测量值将补充反应性氮（NOY）家族中其他各个化合物的测量。