Gas-Phase Reactions of Nopinone, 3-Isopropenyl-6-oxo-heptanal, and 5-Methyl-5-vinyltetrahydrofuran-2-ol with OH, NO3, and Ozone
| Autor: | Dimitrios Kotzias, Jens Hjorth, Claus J. Nielsen, Aggelos Calogirou, N. R. Jensen |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Environmental Science & Technology. 33:453-460 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | In the troposphere, α-pinene, β-pinene, limonene, and linalool are mainly oxidized to pinonaldehyde, nopinone, 3-isopropenyl-6-oxoheptanal (IPOH), and 5-methyl-5-vinyltetrahydrofuran-2-ol (MVT), respectively. The rate constant of the reactions of nopinone, IPOH, and MVT with OH, NO3, and O3 were determined by long path FT-IR spectroscopy, and the oxidation products from the reactions between the OH radical and pinonaldehyde, nopinone, IPOH, and MVT were investigated using GC−MS and HPLC. The reaction rate constants (k) for the reactions have been determined at 740 ± 5 Torr and 298 ± 5 K, and a number of reaction products were identified. The rate constants obtained for the reactions with nopinone were kOH = (1.7 ± 0.2) × 10-11, kNO3 < 2 × 10-15, and kO3 < 5 × 10-21; for the reactions with IPOH were kOH = (1.1 ± 0.3) × 10-10, kNO3 = (2.6 ± 0.8) × 10-13, and kO3 = (8.3 ± 2.2) × 10-18; and for the reactions with MVT were kOH = (7.4 ± 0.9) × 10-11, kNO3 = (2.0 ± 0.9) × 10-14, and kO3 = (3.8 ± 0.8) × 10-18 (al... |
| Databáze: | OpenAIRE |
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