Analytical Method of Diflubenzuron in Agricultural Products

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  • TERASHI Akiko
    Kitakyushu Municipal Institute of Environmental Health Sciences
  • ETO Shuichi
    Kitakyushu Municipal Institute of Environmental Health Sciences
  • TAKANO Kenji
    Kitakyushu Municipal Institute of Environmental Health Sciences

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Other Title
  • 農産物中のジフルベンズロン (殺虫剤) の分析
  • ノウサンブツチュウ ノ ジフルベンズロン サッチュウザイ ノ ブンセキ

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Abstract

The analytical method of diflubenzuron so far used gave poor recoveries from vegetables and fruit (0-27%). changes in the volumes of acetone and coagulating solution did not result in constant recovery (41-93%), and in addition interfering peaks appeared in some cases on the high performance liquid chromatograms. Therefore, we developed a shorter method which includes hexane extraction and hexane-acetonitrile partition instead of dichloromethane extraction after clean-up by using coagulating solution, and cartridge column chromatography (Sep-Pak silica). The recovery of diflubenzuron by this method was in the range of 72-95%.

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