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  • Title: Determination of norflurazon residues in mixed crop matrices.
    Author: Winkler VW, Patel JR, Januszanis M, Colarusso M.
    Journal: J Assoc Off Anal Chem; 1981 Nov; 64(6):1309-11. PubMed ID: 7198114.
    Abstract:
    A method for determining norflurazon residues in mixed crop matrices is described. The method included methanol Soxhlet extraction, hexane wash, addition of 10% saline, methylene chloride extraction, concentration, preparative thin layer chromatography of 10% sample aliquot, and resuspension of sample zone for gas-liquid chromatographic analysis. The lower level of electron capture detection is 0.01 ppm. Recoveries for 0.08 ppm spiked samples of cottonseed; soybean seed and foliage; peanut seed plus hulls and foliage; orange and tangerine; lemon; apple and peach; and soil are generally greater than 80%.
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