Cd. Dieter et al., ENVIRONMENTAL FATE OF PHORATE AND ITS METABOLITES IN NORTHERN PRAIRIEWETLANDS, Journal of freshwater ecology, 10(2), 1995, pp. 103-109
The environmental fate of the organophosphate insecticide phorate and
its metabolites, phorate sulfone and phorate sulfoxide Was examined in
mesocosms placed in South Dakota wetlands. Three treatment concentrat
ions of phorate (1.2, 2.4, and 4.8 kg/ha) were applied to wetland meso
cosms. Phorate, phorate sulfone, and phorate sulfoxide were present in
water and sediment during the entire study (28 days) in all treatment
s. Maximum phorate concentrations in water were measured one day after
treatment and decreased significantly during a 28-day period. The met
abolites of phorate increased significantly in the water during the st
udy. Phorate was present in higher concentrations in sediments than ei
ther phorate sulfone or phorate sulfoxide throughout the study.