title: Determination of norflurazon residues in mixed crop matrices.
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%.
mesh_terms: D010367:Arachis / Q000032:analysis; D002849:Chromatography, Gas / Q000379:methods; D002855:Chromatography, Thin Layer; D002957:Citrus / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D010945:Plants, Edible / Q000032:analysis*; D011724:Pyridazines / Q000032:analysis*; D013025:Glycine max / Q000032:analysis
chemical_list: D006540:Herbicides; D010573:Pesticide Residues; D011724:Pyridazines; C008677:norflurazone