降雨による土壌コロイドと溶存有機物の流出特性<速報>

概要

論文の詳細を見る
Transport of pesticides, heavy metal, PAHs, radionuclide, and other strongly sorbing contaminants in soils is enhanced by colloid-facilitated transport. This study investigated mobilization and leaching of colloidal matter and dissolved organic carbon from two aggregated soils (Andisols) and a single grain soil (sand) during rainfall irrigation using column experiments. Results show that the cumulative colloid leaching from both aggregated and single-grained soils increased linearly with the square root of time at low EC effluents. This suggests that the colloid leaching is controlled by diffusion-limited kinetics. The mechanism of colloid detachment was also examined based on the relationship between the colloid concentration and the reciprocal of the square root of EC.
埼玉大学工学部の論文
2005-03-00