Untangling links between nitrogen oxides and airborne sulfates helps tackle hazy air pollution

ScienceDaily | Dec 26, 2019 at 7:31 PM
  • The complex oxidants and mechanisms that enable this transformation are not.
  • Under low NOx conditions, NOx catalyze the cycling of hydroxyl radicals, an effective oxidant of SO2, and thus promote formation of sulfate.
  • Under extremely high NOx common in haze-fog conditions, NOx act as dominant oxidants of SO2 and thus also promote formation of sulfate.