SEARCH Articles Figures Tables Hole Transfer through the Intermediate Formation of Hydroxyl Radicals Hydroxyl Radicals in the Troposphere Hydroxylation radical Indirect Photolysis in the Atmosphere (Troposphere)— Reactions with Hydroxyl Radical (HO) Production of Hydroxyl Radicals in the Troposphere Radical hydroxylations The Production of Hydroxyl Radicals in Biological Systems The Reaction Between Methane and Hydroxyl Radical The Role of Hydroxyl Radicals With Oxygen, Ozone, and the Hydroxyl Radical OH