Method to Determination of Total Residues of the Insecticide Acetamiprid and Its Metabolites in Crops by Gas Chromatography

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  • TOKIEDA Masanori
    Analysis of Chemicals & Pesticide Residue, Nisso Chemical Analysis Service Co., Ltd.
  • OZAWA Michihiro
    Analysis of Chemicals & Pesticide Residue, Nisso Chemical Analysis Service Co., Ltd.
  • KOBAYASHI Shigeru
    Analysis of Chemicals & Pesticide Residue, Nisso Chemical Analysis Service Co., Ltd.
  • GOMYO Takeshi
    Analysis of Chemicals & Pesticide Residue, Nisso Chemical Analysis Service Co., Ltd.

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  • ガスクロマトグラフィーによる作物中の殺虫剤アセタミプリドおよび代謝物の総量分析法
  • Method to Determination of Total Residu

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Abstract

An analytical method has been developed for the determination of acetamiprid, (E)-N1-[(6-chloro-3-pyridyl)methyl]-N2-cyano-N1-methylacetamidine (ATP) and its metabolites, IM-2-1, IM-0, IC-0 and IM-0-Glucose in crops by gas chromatography (GC). ATP and its metabolites in crops were extracted with methanol and derivatized to methyl 6-chloronicotinate (IC-0-Me) through alkali hydrolysis, potassium permanganate oxidation and then esterification by diazomethane, followed by column chromatography clean-up and GC determination. The limit of detection was 0.01ppm and the recoveries of fortified samples ranged from 74 to 92%.

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