Journal of AOAC International · 1997 · 13 citations · 0 references
AgricultureChemistryFood ScienceAnalytical ChemistryFood AnalysisFood ChemistryChemical Food SafetyChromatographic Food AnalysisPesticide ChemistryPesticide Residue AnalysisPesticide ResiduesAnalytical Methods DevelopmentChromatographic Residue DeterminationElectron Capture DetectionFlame DetectionNitrogen-phosphorus DetectionPesticide DetectionQuantitative Gas ChromatographyResidue Detection Limits
Abstract A multiresidue method is described for determination of acephate, diazinon, dimethoate, fenitrothion, malathion, pirimicarb, trichlorfon, bromopropylate, dicofol, and tetradifon in sweet cherries for baby food at a limit of 0.01 ppm. Sweet cherry samples were extracted through a selective Extrelut column with methylene chloride and cleaned up with quaternary aminesilane-silica-dichloromethane. Extracts were then analyzed by gas chromatography (GC)/electron capture detection/flame photometric detection (FPD) and GC/nitrogen-phosphorous detection/FPD. Recoveries were determined by spiking sweet cherry homogenates with 10 pesticides at 0.1, 0.05, 0.02, and 0.01 ppm. Six determinations were performed at each level for each pesticide. Recoveries were 70% or better at the 0.01 ppm level.