Oxidation of SO2 by NO2 and O3 on carbon: Implications to tropospheric chemistry |
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| Affiliation: | 1. State Key Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Institute for History, Theory and Ethics in Medicine, Medical Faculty, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany;2. Linz-Mediconsult, Am Baltenring 25, 12621 Berlin, Germany |
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| Abstract: | The oxidation of SO2 to sulfate in air at 65%, relative humidity on carbon particles was investigated gravimetrically in the presence of NO2 and O3. Approximately 1 mg samples of carbon black were exposed to continuously flowing ppbv mixtures of SO2, SO2 + NO2 and SO2 + O3 for prescribed periods of time before desorption into dry N2. Wet chemical analysis of the particles followed desorption. NO2 and O3 were found to have little, if any, effect relative to air on sulfate yields at the concentrations studied. |
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