Calculations with the Level II Fugacity Model for selected organophosphorus insecticides

The environmental equilibrium distributions and levels of persistency of 20 selected organophosphorus insecticides have been determined using Mackay's Level II Fugacity Model. The model comprised air, water, biota, soil, suspended solids and sediment compartments. Available physicochemical and kinetic data for the insecticides have been compiled. Results suggest that some of the insecticides have tendencies to occur at high concentrations in biota and may be environmentally persistent.