Environmental Fate of Pesticides 78

Environmental Fate of Pesticides-78
Project Leader and Principal UC Investigators D.G. Crosby, Dept. of Environmental Toxicology, UC Davis J.B. Bowers M.M. Draper C.J. Soderquist	The key environmental processes leading to pesticide movement and breakdown in the field appear to be volatilization from the surface of water and photochemical degradation in water and air. Oxidation in water is due largely to the natural generation of hydrogen peroxide and its conversion to hydroxyl radicals by light; oxidation in air may be due in part to ozone. The volatility and degradation of triphenyltin hydroxide (TPTH)-the active constituent of Du-Ter-also appear satisfactory, but the properties of Du-Ter itself may not be optimal and may relate to its hazard to fish. Additional studies are required to delineate the disappearance of Du-Ter in the environment.

Environmental Fate of
Pesticides-78

Project Leader and Principal UC Investigators

D.G. Crosby, Dept. of Environmental Toxicology, UC Davis

J.B. Bowers

M.M. Draper

C.J. Soderquist

The key environmental processes leading to pesticide movement and breakdown in the field appear to be volatilization from the surface of water and photochemical degradation in water and air. Oxidation in water is due largely to the natural generation of hydrogen peroxide and its conversion to hydroxyl radicals by light; oxidation in air may be due in part to ozone. The volatility and degradation of triphenyltin hydroxide (TPTH)-the active constituent of Du-Ter-also appear satisfactory, but the properties of Du-Ter itself may not be optimal and may relate to its hazard to fish. Additional studies are required to delineate the disappearance of Du-Ter in the environment.