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  • Title: [Simultaneous determination of pesticide residues in fruits and vegetables by GC/MS (SCAN mode) and HPLC].
    Author: Kakimoto Y, Ohtani Y, Funaki N, Joh T.
    Journal: Shokuhin Eiseigaku Zasshi; 2003 Oct; 44(5):253-62. PubMed ID: 14733140.
    Abstract:
    A method was developed for simultaneous determination of pesticide residues in fruits and vegetables. Residues were extracted from samples with acetonitrile, followed by a salting-out step and a partitioning step with n-hexane at the same time. Co-extractives were removed with ENVI-Carb/LC-NH2 mini-column cleanup. Analysis was performed by GC/MS (SCAN mode) and HPLC. Of the 139 pesticides spiked at 0.1 or 0.5 microgram/g into 6 fruits and vegetables (spinach, tomato, apple, radish, cabbage and carrot), recoveries of 117 pesticides were between 70 and 120%. This method is appropriate for determining these pesticides and for screening several other pesticides for which the recoveries were < or = 70% or > or = 120% (imazalil, etc.). The limits of detection for most pesticides in this method were equal to or lower than those of the bulletin method in Japan.
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