Indoor simulation of insecticides in broadcast spraying

From a viewpoint of safety assessment of insecticides in broadcast spraying to a room carpet a modified unsteady state Fugacity model (CARPET-MOM) has been developed to simulate temporal variations of concentrations or amounts of active ingredient (ai) in air and on floor, wall and ceiling under various conditions. The model predicted ai behavior in a quantitative sense in the concerned compartments. A simulation experiment showed that the time-dependent aerial ai concentrations and ai amounts on floor entirely agreed with measured ones. The model will be very useful to describe accurately ai concentrations in various compartments by utilizing known, calculated, or easily available data of the rooms, formulations, use patterns and physicochemical properties without realization of experiments.