Abstract
Abstract The treatment of soil with SO2 caused rapid increases in concentrations of water soluble plus exchangeable (extractable) Mn. The extractable Mn increased with increasing pressure of SO2 and time of exposure, and increased with increasing water contents up to field capacity but decreased beyond this point. The addition of peat to a sandy loam increased the effect of SO2 on extractable Mn while the addition of lime decreased the effect. Reactive Mn oxides in soils may contribute significantly to SO2 sorption by soils.
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