Determination of Isotianil in Brown Rice and Soil Using Supercritical Fluid Extraction and Gas Chromatography/Mass Spectrometry

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  • YOSHIDA Tatsuo
    Kumamoto Prefectural Institute of Public Health and Environmental Science Department of Chemistry, Kumamoto University
  • ITOU Asami
    Kumamoto Prefectural Institute of Public Health and Environmental Science
  • YAMAMOTO Rise
    Kumamoto Prefectural Institute of Public Health and Environmental Science
  • TOBINO Toshiaki
    Kumamoto Prefectural Institute of Public Health and Environmental Science
  • MURAKAWA Hiroshi
    Kumamoto Prefectural Institute of Public Health and Environmental Science
  • TODA Kei
    Department of Chemistry, Kumamoto University

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Abstract

Isotianil (3,4-dichloro-2′-cyano-1,2-thiazole-5-carboxanilide) is a new plant-activating pesticide. Usage of the pesticide was approved for rice fields in 2010 and its production increased 400 times (2 × 104 kg) in the next year. In this work, a method for determining isotianil in brown rice and rice field soil was investigated for the first time. Isotianil was extracted by supercritical fluid extraction and measured by gas chromatography/mass spectrometry. Isotianil was successfully analyzed with good recoveries (95.1 – 99.3%) even from soil samples with strong adsorption of pesticides.

Journal

  • Analytical Sciences

    Analytical Sciences 29 (9), 919-922, 2013

    The Japan Society for Analytical Chemistry

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