FURTHER EXPERIMENTS ON SO2 OXIDATION RATE IN MONODISPERSE DROPLETS GROWN ON CARBON NUCLEI IN PRESENCE OF O-2 AND NO2

The oxidation of SO2 in monodisperse droplets grown on carbon nuclei in presence of O2 and NO2 has been studied. Both NO2 and O2 were determined to be effective oxidants for SO2. When the O2 concentration is less-than-or-equal-to 2%, NO2 influences S(IV) oxidation if the former's concentration is higher than about 0.1 ppm. At the O2 atmospheric concentration, NO2 influences oxidation at concentrations higher than 0.3 ppm.