定量操作中に分解し易いキャプタン, カプタホール等12種殺菌剤の一斉分析法の検討

概要

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Analytical method for detemination of 12 kinds of fungicides containing unstable captan, captafol, folpet etc. in the preparation of test solution were studied by FTD-and FPD-GC. Dicloran, chlorothalonil, vinclozolin, procymidone, iprodione and imazalil were determined by FTD-GC, and dichlofluanid, edifenphos, isoprothiolane, captan, captafol and folpet were determined by FPD-GC. The reason for the low recoveries of captan, captafol and folpet from the test sample were studied, and it was found that some food components remained in the test solution prompted to decompose the 3 pesticides when the test solution was injected into gas chromatograph. It was clarified that the treatment of the sample with zinc acetate as clean-up of the test solution was very effective to remove some of food components as well as fatty acids as a precipitate and to prevent decomposition of the 3 pesticides. Test solutions for allium vegetables were cleaned up by column chromatography using silica gel after treatment of the solutions with zinc acetate. Recoveries of the 12 fungicides, except imazalil, added to 17 kinds of agricultural products (0.1-1.0 ppm) were 73.9-103.8% by the proposed method.
公益社団法人日本薬学会の論文
1992-06-30