Factors Affecting Trace Metal Mobility in Subsurface Soils

摘要

Field and laboratory studies were conducted to examine factors affecting metal movement in subsurface materials to groundwater and how these factors interact. Subsoil pH as with surface soils was found to be the property that most influenced metal immobilization. The inclusion of percent organic carbon, free iron oxides, and cation exchange capacity considerably improved the statistical relationship between amount of metal retained and subsoil properties. The study showed important interactions between subsoil types, metals, metal concentrations, and the presence of co-wastes on the movement of metals.