Atmospheric chemistry of the monoterpene reaction products nopinone,camphenilone, and 4-acetyl-1-methylcyclohexene |
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| Authors: | Roger Atkinson Sara M Aschmann |
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| Institution: | (1) Statewide Air Pollution Research Center, University of California, 92521 Riverside, CA, USA;(2) Department of Soil and Environmental Sciences, University of California, 92521 Riverside, CA, USA |
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| Abstract: | Rate constants for the gas-phase reactions of OH radicals with nopinone (6,6-dimethylbicyclo3.1.1]heptan-2-one) and camphenilone (3,3-dimethylbicyclo2.2.1]heptan-2-one) and for the reactions of 4-acetyl-1-methylcyclohexene with OH and NO3 radicals and O3 have been measured at 296±2 K. The rate constants (cm3 molecule–1 s–1 units) obtained were, for reaction with the OH radical: nopinone, (1.43±0.37)×10–11; camphenilone, (5.15±1.44)×10–12; and 4-acetyl-1-methylcyclohexene, (1.29±0.33)×10–10; for reaction with the NO3 radical: 4-acetyl-1-methylcyclohexene, (1.05±0.38)×10–11; and for reaction with O3: 4-acetyl-1-methylcyclohexene, (1.50±0.53)×10–16. These data are used to calculate the tropospheric lifetimes of these monoterpene atmospheric reaction products. |
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| Keywords: | 6 6-dimethylbicyclo[3 1 1]heptan-2-one 3 3-dimethylbicyclo[2 2 1]heptan-2-one 4-acetyl-1-methylcyclohexene hydroxyl radical nitrate radical ozone atmospheric reactions |
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