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Pattern and cause of acidic deposition in the Chongqing region,Sichuan Province,China |
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| Authors: | Zhao Dawei Hans M. Seip Zhao Dianwu Zhang Dongbao |
| Affiliation: | 1. Chongqing Institute of Environmental Science and Monitoring, 37 Jia Ling VLG-1, Jiang Bei District, Chongqing, China 3. Department of Chemistry, University of Oslo, Blindern, P.O. Box 1033, 0315, Oslo, Norway 4. Research Center for Eco-Environmental Science, Academia Sinica, P.O. Box 934, 100083, Beijing, China 5. Chongqing Institute of Environmental Science and Monitoring, 37 Jia Ling VLG-1, Jiang Bei District, Chongqing, China |
| Abstract: | The Chongqing region located in Sichuan Province of China, comprises a large city, many small towns and rural areas. The region relies heavily on high-sulfur coal for energy production. Atmospheric pollution by sulfur oxides and other compounds from coal burning has become a major issue. Acid rain is observed throughout the region; volume weighted average pH is about 4.30. Average total S deposition for the region is estimated to be about 8 g S m?2 yr?1. In this paper we report concentrations of major ions in rain, fog, dew and clouds, of SO2 in air and of airborne particles as well as dustfall. The emissions and interactions between important chemical species in air and water droplets are discussed. |
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