Kinetics of the reactions of OH radicals with some oxygenated volatile organic compounds under simulated atmospheric conditions

✍ Scribed by Bénédicte Picquet; Sébastien Heroux; Abderraouf Chebbi; Jean-François Doussin; Régine Durand-Jolibois; Anne Monod; Hélène Loirat; Patrick Carlier

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 169 KB
• Volume: 30
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/(sici)1097-4601(1998)30:11<839::aid-kin6>3.0.co;2-w

✦ Synopsis

Some relative rate experiments have been carried out at room temperature and at atmospheric pressure. This concerns the OH-oxidation of some oxygenated volatile organic compounds including methanol (k 1 ), ethanol (k 2 ), MTBE (k 3 ), ethyl acetate (k 4 ), n-propyl acetate (k 5 ), isopropyl acetate (k 6 ), n-butyl acetate (k 7 ), isobutyl acetate (k 8 ), and t-butyl acetate (k 9 ). The experiments were performed in a Teflon-film bag smog chamber. The rate constants obtained are (in ): 3 Ϫ1 Ϫ1 Ϫ12 cm molecule s k ϭ (0.90 Ϯ 0.08) ϫ 10 ; k ϭ (3.88 Ϯ 0.11) ϫ 1 2 Ϫ12 Ϫ12 Ϫ12 Ϫ12 10 ; k ϭ (2.98 Ϯ 0.06) ϫ 10 ; k ϭ (1.73 Ϯ 0.20) ϫ 10 ; k ϭ (3.56 Ϯ 0.15) ϫ 10 ; 3 4 5 6 7 8 9

The agreement between the obtained rate constants and some previ-Ϫ12 (0.56 Ϯ 0.11) ϫ 10 . ously published data has allowed for most of the studied compounds to point out a coherent group of values and to suggest recommended values. Atmospheric implications are also discussed.