Product formation from the gas-phase reactions of OH radicals and O3 with a series of monoterpenes |
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| Authors: | Hannele Hakola Janet Arey Sara M Aschmann Roger Atkinson |
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| Institution: | (1) Statewide Air Pollution Research Center, University of California, 92521 Riverside, CA, USA;(2) Present address: Air Quality Department, Finnish Meteorological Institute, SF-00810 Helsinki, Finland;(3) Department of Soil and Environmental Sciences, University of California, 92521 Riverside, CA, USA |
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| Abstract: | The formation yields of nine carbonyl products are reported from the gas-phase OH radical-initiated reactions (in the presence of NO
x
) and the O3 reactions with seven monoterpenes. The products were identified using GC/MS and GC-FTIR and quantified by GC-FID analyses of samples collected on Tenax solid adsorbent cartridges. The identities of products from camphene, limonene and  -pinene were confirmed by comparison with authentic standards. Sufficient quantities of products from the 3-carene, limonene,  -pinene, sabinene and terpinolene reactions were isolated to allow structural confirmation by proton NMR spectroscopy. The measured total carbonyl formation yields ranged from non-detectable for the OH radical reaction with camphene and the O3 reactions with 3-carene and limonene to  0.5 for the OH radical reaction with limonene and the O3 reaction with sabinene. |
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| Keywords: | Monoterpenes OH radical reactions O3 reactions carbonyl products |
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