Measurement of Pesticides in Atmosphere over Golf Course

Concentrations of airborne pesticides were measured. Sampling sites were located in golf courses in Kanagawa prefecture. Twelve pesticides detected were as followed: isoxathion, chlorpyrifos, diazinon, fenitrothion, echlomezole, chlorotharonyl, chloroneb, tolclophosmethyl, simazine, butamifos, benfluralin and pendimethalin. Air sample was passed through a SEP-PAK silica cartridge column by diaphragm air pump. The pesticides collected were eluted with 5ml of acetone, and determined by gas chromatography equipped with electron capture detecter and flame thermionic detecter. Recoveries of 19 pestisides were 70-100% and those of 2 pesticides were 50-70%. Temperature, wind direction and volatilization rates of pesticides affected to these concentrations in air. Concentrations of diazinon, fenitrothion, chlorotharonyl and isoxathion were higher in daytime and lower in night time. Maximum allowed concentrations of pesticides in air were estimated from relationship between acceptable daily intake (ADI) and LD50. No pesticides were over these concentrations.