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  • Title: [Analysis of imazalil and its major metabolite in citrus fruits by GC-FTD].
    Author: Kimura N, Nagayama T, Takano I, Kobayashi M, Tamura Y, Tateishi Y, Kitayama K, Saito K.
    Journal: Shokuhin Eiseigaku Zasshi; 2003 Feb; 44(1):63-8. PubMed ID: 12749200.
    Abstract:
    A simplified simultaneous analytical method of imazalil (IZ) and its major metabolite, alpha-(2,4-dichlorophenyl)-1H-imidazole-1-ethanol (IZM), in citrus fruits was developed, and commodities samples were investigated. A homogenate of citrus fruits was extracted with ethyl acetate under basic conditions. The crude extract was partitioned between 0.025 mol/L of sulfuric acid and ethyl acetate. The analytes were extracted from the aqueous fraction under basic conditions with ethyl acetate. The extract solution was purified with an ENVI-Carb cartridge, and then analyzed by GC-FTD and GC/MS. Recoveries of IZ and IZM added to grapefruit at the level of 0.05 microgram/g were 90.0 and 108.7%, and those in the case of lemon were 100.4 and 93.0%, respectively. The detection limits were 0.01 microgram/g in samples. By this method, IZ and IZM were analyzed in 46 citrus fruits on the market and were detected simultaneously in some samples.
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