The effects of increasing atmospheric ozone on biogenic monoterpene profiles and the formation of secondary aerosols |
| |
| Institution: | 1. Department of Environmental Science, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland;2. Department of Physics, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland;3. Finnish Meteorological Institute, Unit Kuopio, P.O. Box 1627, FI-70210 Kuopio, Finland;1. School of Food and Nutritional Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan;2. Institute of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan;3. Silviculture and Forest Ecological Studies, Hokkaido University, Sapporo, Hokkaido 060-8589, Japan;1. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;2. Foshan Environmental Monitoring Center, Foshan 528000, China;3. Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, China;4. School of Atmosphere Sciences, Sun Yat-Sen University, Zhuhai 519082, China;1. Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China;2. Department of Civil and Environmental Engineering, University of Southern California, CA, USA;3. Department of Chemistry, University of Cambridge, Cambridge, UK;1. School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;2. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing 210044, China;3. Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;4. Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA |
| |
| Abstract: | Monoterpenes are biogenic volatile organic compounds (BVOCs) which play an important role in plant adaptation to stresses, atmospheric chemistry, plant–plant and plant–insect interactions. In this study, we determined whether ozonolysis can influence the monoterpenes in the headspace of cabbage. The monoterpenes were mixed with an air-flow enriched with 100, 200 or 400 ppbv of ozone (O3) in a Teflon chamber. The changes in the monoterpene and O3 concentrations, and the formation of secondary organic aerosols (SOA) were determined during ozonolysis. Furthermore, the monoterpene reactions with O3 and OH were modelled using reaction kinetics equations. The results showed that all of the monoterpenes were unequally affected: α-thujene, sabinene and d-limonene were affected to the greatest extend, whereas the 1,8-cineole concentration did not change. In addition, plant monoterpene emissions reduced the O3 concentration by 12–24%. The SOA formation was dependent on O3 concentration. At 100 ppbv of O3, virtually no new particles were formed but clear SOA formation was observed at the higher ozone concentrations. The modelled results showed rather good agreements for α-pinene and 1,8-cineole, whereas the measured concentrations were clearly lower compared to modelled values for sabinene and limonene. In summary, O3-quenching by monoterpenes occurs beyond the boundary layer of leaves and results in a decreased O3 concentration, altered monoterpene profiles and SOA formation. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
