Tiffany Charbouillot, Marcello Brigante, Laurent Deguillaume and Gilles Mailhot Atmospheric Aqueous-Phase Photoreactivity: Correlation Between the Hydroxyl Radical Photoformation and Pesticide Degradation Rate in Atmospherically Relevant Waters Photochemistry and Photobiology 88
Hydrogen peroxide (H2O2) and nitrates (NO3-), naturally present in the atmospheric aqueous phase, are able to produce hydroxyl radicals (?OH) via light absorption. In the present work we correlated the photochemical production of hydroxyl radical in synthetic and real cloud waters with the degradation rate of a pesticide (mesotrione). Moreover we founded that hydrogen peroxide and nitrates are the most important photochemical sources of ?OH in atmospheric aqueous phases.
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