Hydroperoxyl radical

From Glossary of Meteorology
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hydroperoxyl radical

Free radical of formula HO2, formed by the transfer of a hydrogen atom to molecular oxygen.

The hydroperoxyl radical is a chain carrier in the atmosphere and in combustion systems. In the stratosphere, it is involved in ozone-destroying chain reactions. In the troposphere, it is formed as an intermediate in the oxidation of most hydrocarbons.

Bate, D. R., and M. Nicolet 1950. The photochemistry of atmospheric water vapor. J. Geophys. Res.. 55. p. 301.