A simple and rapid extraction for gas chromatographic determination of thiabendazole and imazalil residues in lemons
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A rapid and efficient method is described for the determination of thiabendazole and imazalil residues in lemons (peel and pulp). The procedure is based on the extraction with an hexane:ethyl acetate mixture (1:1, v/v) and gas chromatographic analysis using thermionic specific detection (TSD). The possibility of matrix effect was also studied. Mean recoveries from 8 replicates of fortified samples ranged from 79% to 109%, with relative standard deviation values between 2.4% to 12.8%. The detection and quantification limits of the method were 0.2 mg kg-1 and 0.5 mg kg-1, respectively.
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Gas chromatography, Imazalil, Lemon, Pesticide residues, Thiabendazole, enilconazole, tiabendazole, chemical analysis, concentration (parameters), extraction, gas chromatography, lemon
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Inglês
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Journal of the Brazilian Chemical Society, v. 13, n. 5, p. 592-596, 2002.
