Abstract
Summer and winter concentrations of acidic atmospheric species and their precursors were measured in central Ontario. Large seasonal differences in concentrations were observed for some species. The concentrations of primary emission species, SO2 and N0X, were much larger in winter, whereas O3 and aerosol SO =4 were much reduced. HNO3, PAN and aerosol NO -3 showed little seasonal change; PAN represented about 30% of the total oxidized nitrate. During pollution episodes and in summer, the molar ratio of nitrate (aerosol NO -3 plus HNO3) to aerosol SO =4 was about 0.1 to 0.2; however, during winter, this molar ratio was about 1 to 2.
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© 1986 Springer Science+Business Media Dordrecht
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Anlauf, K.G., Bottenheim, J.W., Brice, K.A., Wiebe, H.A. (1986). A Comparison of Summer and Winter Measurements of Atmospheric Nitrogen and Sulphur Compounds. In: Martin, H.C. (eds) Acidic Precipitation. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3385-9_14
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DOI: https://doi.org/10.1007/978-94-009-3385-9_14
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