Capillary GC Analyses of Chlorinated Pesticides in Dry Pet Food

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Courtesy of Sigma-Aldrich Co., LLC

Based on federal and state regulations for identifying and quantifying low levels of pesticides in food and environmental samples, we selected three capillary columns to screen for chlorinated pesticides. A nonpolar and two low/intermediate polarity phases were chosen to evaluate differences  in component elution order and retention times. Low level screening analyses were performed effectively by using split/splitless injection and an electron capture detector (ECD). Each column separated the 18 pesticides in approximately 35 minutes. Example chromatograms are shown.

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