Residue Analysis of Herbicide Sethoxydim and Its Metabolites in Crops

DOI NDL Digital Collections JASI Web Site Web Site

Bibliographic Information

Other Title
  • 除草剤セトキシジムおよび代謝物の作物残留分析
  • ジョソウザイ セトキシジム オヨビ タイシャブツ ノ サクモツ リュウブンセキ

Search this article

Description

Two analytical methods for residues of sethoxydim [(±)2-(1-ethoxyiminobutyl)-5-[2-(ethylthio)propyl]-3-hydroxycyclohex-2-enone, STM] and its metabolites in crops, one using HPLC and the other using GC, were investigated. The results by the two method suggested that the HPLC method is more suitable. STM and its metabolites were extracted with methanol. After they were converted into three compounds M2-SO2, M1-SO2 and 6-OH-M2-SO2, the derivatives cleaned up by column chromatography, followed by HPLC determination. The detection limit for STM and its metabolites was 0.05ppm. The recovery of STM and its metabolites ranged from 70 to 96%. The analyses of crops treated with STM showed that a majority of residue was metabolites unified to M2-SO2 (mainly M-SO and M-SO2). Hydroxylated metabolites (mainly 5-OH-M-SO2) unified to 6-OH-M2-SO2 were detected in a few crops. The residual amount of the metabolites unified to M1-SO2 was negligibly small in all crops.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top