【Abstract】 SO₂ in fogwaters of Qingdao has been stuided in June and July, 1991. Analytical method of SO₂ in fogwaters has been established. From south to north and from east to west in Qingdao, the pollution of SO₂ changes strongly, its concentrations are in the ranges 0. 03-14. 00 mg/L. Pollution regions of acid fog were divided with weight factors of pH value. SO₂, SO₃ and NO₂. The mark values of pH, SO2, SO3 and NO2 are given in the same pollution dergee, i. e. 0. 48 pH unit, 2. 5l, 42. 13 and 3. 42 mg/L respectively. The efficient projects of controlling acid fog pollution has ben suggested in this paper. This has an impor tant role in the research of the globe acidic precipitation.更多还原