Atmospheric Formation of OH Radicals and H_2O_2 from Alkene Ozonolysis under Humid Conditions

摘要

Detailed mechanistic knowledge about the formation of OH radicals and H_2O_2 in alkene-ozone reactions is of enormous interest for tropospheric chemistry, since these molecules are among the most important oxidants in the atmosphere. Hydroxyl radicals oxidize may gaseous trace compounds rapidly and, accordingly, their concentration determines the atmospheric lifetimes of many compounds. Therefore, OH radicals play a key role for the chemistry of the polluted atmosphere. H_2O_2 contributes to acid precipitation by the conversion of SO_2 to H_2SO_4 and it is also known to damage trees and plants.