Abstract |
Oxidation reactions of sulfur dioxide in polluted atmospheres are discussed. Emphasis is on the photochemical reactions of sulfur dioxide in the wavelength range of 3000 to 4000 A alone and in mixtures with nitrogen oxides and/or hydrocarbons or carbon monoxide. Reactions of sulfur dioxide in the presence of foreign particles on nuclei and reactions of sulfur dioxide with metal salt solutions and droplets are also discussed. The gas-phase reactions, the formation and chemical identity of aerosols, the effect of water vapor, the effect of nucleating particles on photochemical aerosol formation, and the effect of sulfur dioxide on nitrogen oxides hydrocarbon reaction parameters are included in this review. (Author) |