Interactions of arsenic and the dissolved substances derived from turf soils.

摘要: Monosodium methanearsonate (MSMA) is frequently used as an herbicide for the control of weeds in turf grasses at golf courses Florida. There are concerns about arsenic (As) contamination local shallow groundwater from application MSMA. The distinction between “free” As and colloid-bound/complexed soil solution important understanding mobility bioavailability environment. In this study, equilibrium membrane (500 3500 Da) dialysis method was employed to determine “bound” water extracts five types golf-course soils containing coated uncoated sands various proportions with peat. All samples were evaluated species (arsenite, AsIII arsenate, AsV), dissolved organic matter, additional constituents (iron, aluminum, calcium). impacts microbial growth by conducting experiments without addition sodium azide one particular type. Results indicate that (1) p...