Atmospheric Chemistry of Biogenic Organic Compounds and Their Reaction Products

生物有机化合物及其反应产物的大气化学

• 批准号: 9809852
• 负责人: Roger Atkinson
• 金额: $ 31.71万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9809852&HistoricalAwards=false
• 关键词: Atmospheric; Chemistry; Biogenic; Organic; Compounds

The kinetics and products of the atmospherically important reactions of volatile non-methane organic compounds (VOCs) emitted from biogenic sources will be studied. Biogenic emissions of hydrocarbons, such as isoprene, monoterpenes, sesquiterpenes, and a variety of oxygenated species are estimated to dominate over those emitted from anthropogenic sources on global and regional scales. Hydrocarbons play an important role in the formation of ozone in rural and urban areas. Specifically, the products of the reactions of hydroxyl (OH) radical, in the presence and absence of NOx, nitrate (NO3) radicals, and ozone with isoprene, monoterpenes, and oxygenated VOCs will be studied. Kinetic, product, and mechanistic studies of first-generation (and possibly second-generation) products of isoprene, monoterpenes, and oxygenated biogenic VOCs will be conducted. The resulting detailed data will be useful as inputs into chemical mechanisms for use in urban and regional-scale computer models for the formation of ozone and other photochemical oxidants.

将研究从生物源排放的挥发性非甲烷有机化合物（VOCs）的大气重要反应的动力学和产物。据估计，异戊二烯、单萜、倍半萜和各种含氧物种等碳氢化合物的生物源排放量在全球和区域范围内占主导地位，超过了人为源排放量。碳氢化合物在农村和城市地区臭氧的形成中起着重要作用。具体而言，羟基（OH）自由基的反应的产物，在存在和不存在的NOx，硝酸盐（NO3）自由基，和臭氧与异戊二烯，单萜，和含氧的挥发性有机化合物将进行研究。将对异戊二烯、单萜和含氧生物源VOC的第一代（可能还有第二代）产品进行动力学、产品和机理研究。由此产生的详细数据将有助于输入化学机制，用于城市和区域规模的臭氧和其他光化学氧化剂形成的计算机模型。