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  • Title: Determination of seventeen pesticide residues in agricultural products by LC/MS.
    Author: Okihashi M, Kitagawa Y, Akutsu K, Obana H, Hori S.
    Journal: Shokuhin Eiseigaku Zasshi; 2002 Dec; 43(6):389-93. PubMed ID: 12635344.
    Abstract:
    Residues of 17 pesticides in agricultural products were determined by LC/MS with an atmospheric pressure chemical ionization (APCI) interface in both positive and negative ion modes. Pesticides were extracted with acetonitrile, and the extracts were cleaned-up with a primary and secondary amine (PSA) mini-column eluted with acetone-hexane (1:1). Rice, orange and potato were spiked with the 17 pesticides at 0.1 microgram/g and analyzed by the proposed method. The average recoveries of these pesticides usually ranged from 70 to 98% and the relative standard deviations were usually around 10%. These results suggested that LC/MS with APCI could be used to determine the residue levels of the 17 pesticides in these crops.
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