Tropospheric Aqueous Phase Bulk Photochemistry

4 Tropospheric Aqueous Phase Bulk Photochemistry 4.1 Introduction 

Atmospheric particles very often contain water when they occur as deliquesced aerosol particles, haze, fog, cloud droplets, or even rain droplets (hydrometeors). It has been suggested before that the atmospheric aqueous bulk phase in these systems might also host a lively and important photochemistry which, up to now, has mostly been described insofar as hydroxyl (OH) radicals are generated by the photolysis of nitrate, nitrite, hydrogen peroxide [191-198], and iron-hydroxyl complexes [199]. These processes have been treated in recent overviews such as [200, 201]. 

Photosensitization has been studied not only in connection with interfaces but also for bulk phase aqueous environmental systems [202]. 

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