Rainborne SO2, precipitation pH and airborne SO2 over short sampling times throughout individual events |
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| Affiliation: | 1. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing 100083, PR China;2. School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, PR China;3. The National Institute of Metrology, Beijing 100013, PR China;4. Hangjinhouqi Center of Diseases Prevention and Control, Shanba 015400, PR China |
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| Abstract: | Sequential samples of rain, over periods as short as a few minutes, were collected from nine individual events in East Anglia (U.K.). Rainborne SO2 and rainfall pH was determined and atmospheric SO2 was measured on a 15-mm basis. A much better agreement was found between observed SO2 washout ratios and those predicted from equilibrium theory than in previous studies when the sampling was over longer time-bases. The rainborne SO2 concentrations and pH values exhibit considerable variation, on a time-scale of a few minutes, throughout individual events. |
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