食品中の残留農薬分析に関する研究(第36報)果実類中のフェノキシ系農薬(2,4-D, 2,4,5-Tおよび2,4,5-TP)の多成分残留分析法

概要

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The analytical method for multi-residues of chlorinated phenoxy agricultural chemicals (2,4-D, 2,4,5-T and 2,4,5-TP) in several kinds of fruits and vegetables was investigated. These compounds could be analyzed by gas chromatography with ECD (ECD-GC) after methylation of the sample extract with diazomethane followed by clean-up on silica gel column. The minimum detectable residues of 2,4-D, 2,4,5-T and 2,4,5-TP in fruits and vegetables (e.g. apple, egg apple, lemon and tomato) by ECD-GC were 0.005 ppm, 0.001 ppm and 0.0005 ppm, respectively. 2,4-D separated from a lemon sample was methylated with diazomethane and confirmed by comparing the mass spectrnm and mass chromatograms obtained by GC-MS with those of the methyl ester of the authentic sample. Furthermore, in the surveillance of 2,4-D residues in the citrus fruits imported from U.S.A. in 1979 to 1981,2,4-D was never detected in all of grapefruit and navel orange samples, but it was detected at the levels of 0.010 to 0.21 ppm in all of lemon samples.
公益社団法人日本薬学会の論文
1982-08-31