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Volume 100, 1995
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Reactions of alkoxyl radicals in the atmosphere


The products of the gas-phase reactions of the OH radical with n-pentane and [2H12] pentane have been studied at 296 ± 2 K and 740 Torr total pressure of N2–O2 diluent gas in the presence of NO. Direct air sampling, atmospheric-pressure ionisation tandem mass spectrometry showed the formation of the previously predicted C5-hydroxycarbonyl product, together with pentanones. The effect of varying the O2 concentration on the C5-hydroxycarbonyl and pentanones was consistent with the hydroxycarbonyl being the product formed after isomerisation of the pentan-2-oxyl radical. Gas chromatographic analyses of pentan-2-one and pentan-3-one and pentan-2-yl and pentan-3-yl nitrates allowed rate constants for the decomposition and isomerisation reactions of the pentan-2-oxyl and pentan-3-oxyl radicals, relative to their reactions with O2, to be determined.

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Faraday Discuss., 1995,100, 23-37
Article type

Reactions of alkoxyl radicals in the atmosphere

R. Atkinson, E. S. C. Kwok, J. Arey and S. M. Aschmann, Faraday Discuss., 1995, 100, 23
DOI: 10.1039/FD9950000023

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