Leaf Senescence and Frost Damage--New Sources of Reactive Volatile Organic Compounds (VOCs)

叶片衰老与霜害--活性挥发性有机化合物（VOCs）的新来源

• 批准号: 0003225
• 负责人: Richard Fall
• 金额: $ 7.05万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0003225&HistoricalAwards=false
• 关键词: Leaf; Senescence; Frost; Damage; New

This project will support measurements of VOCs (volatile organic compounds) from plants under conditions of leaf senescence and frost damage. Compounds include hexenals, hexanal, pentenols, and other C5 and C6 VOCs. The field measurements will be carried out at the PROPOHET (Program for Research on Oxidants: Photochemistry, Emissions, and Transport) site in Michigan during the fall. Ancillary measurements will be available to determine air mass origin etc. These measurements will be carried out using on-line proton transfer reaction/mass spectrometry (PTR-MS) in collaboration with the University of Innsbruck, Austria, and adsorbent cartridges and GC/MS (gas chromatography/mass spectrometry), in collaboration with NCAR. A recently developed relaxed eddy accumulator (REA) cartridge sampler will be used for flux measurements. This work will enhance our understanding of the contribution to tropospheric photochemistry and air quality of organic compounds emitted from plants.

该项目将支持在叶片衰老和霜冻损害条件下测量植物中的VOC（挥发性有机化合物）。化合物包括己烯醛、己醛、戊烯醇和其他C5和C6 VOC。现场测量将在秋季在密歇根州的PROPOHET（氧化剂研究计划：光化学，排放和运输）现场进行。将提供辅助测量，以确定空气质量来源等。这些测量将与奥地利因斯布鲁克大学合作，使用在线质子转移反应/质谱（PTR-MS）进行，并与NCAR合作，使用吸附剂盒和GC/MS（气相色谱/质谱）进行。一个最近开发的松弛涡流累积器（REA）筒采样器将用于通量测量。这项工作将加强我们对植物排放的有机化合物对对流层光化学和空气质量的贡献的理解。