Air-Drying and Pretreatment Effects on Soil Sulfate Sorption

摘要

Increased attention has been focused on the effects of acid deposition on aquaticand terrestrial ecosystems. In order to predict the fate of atmospheric S and its effects on surface and groundwater chemistry, realistic estimates of SO4-sorption capacities of soils are needed. In this study, we report the results of two investigations: the first compared the effects of six soil-sample collection and storage procedures on SO4-sorption with the objective of determining which procedure would least alter its sorption characteristics. In the second investigation, our objectives were to determine the impact of air drying on a broad range of soils and to identify the soil physicochemical properties that might affect sorption capacities as a result of soil drying.