recoveries of 7 additional pesticides ( dimethoate , malathion , methyl parathion , mevinphos , parathion , phorate oxygen analog , and pronamide ) , which were determined by gas-liquid chromatography ( glc ) , averaged 108 % ( range 100-120 ) at the low fortification level and 107 % ( range 99-122 ) at the high fortification level .
C0025709
methyl parathion
C0030514
parathion