Abstract
Rate constants have been measured for the reactions of hydroxyl radicals with alkyl nitrates and with some oxygen-containing organic compounds by a competitive technique. Mixtures of synthetic air containing a few ppm of nitrous acid, ethylene and the organic substrate were photolysed in a Teflon bag smog chamber. Based on the value k HO+C2H4}=8.1×10-12 cm3 molecule-1 s-1 the following rate constants were obtained for the hydroxyl radical reactions at 750 Torr and at 303 K in units of 10-12 cm3 molecule-1: CH3ONO2, 0.37±0.09; C2H5ONO2, 0.48±0.20; n-C3H7ONO2, 0.70±0.22; C2H5OH, 3.6±0.4; CH3COCH3, 0.26±0.08; CH3CO2 i-C3H7, 3.0±0.8; CH3CO2 n-C3H7, 2.4±0.2. The results are discussed in relation to the available literature data and the implications of the results are considered in terms of the ‘smog reactivity’ of these molecules.
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Kerr, J.A., Stocker, D.W. Kinetics of the reactions of hydroxyl radicals with alkyl nitrates and with some oxygen-containing organic compounds studied under simulated atmospheric conditions. J Atmos Chem 4, 253–262 (1986). https://doi.org/10.1007/BF00052004
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DOI: https://doi.org/10.1007/BF00052004