Analysis of Chlorothalonil by Liquid Chromatography/Mass Spectrometry Using Negative-ion Atmospheric Pressure Photoionization

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  • YAMAMOTO Atsushi
    Osaka City Institute of Public Health and Environmental Sciences
  • MIYAMOTO Iori
    Osaka City Institute of Public Health and Environmental Sciences
  • KITAGAWA Mikiya
    Osaka Prefectural Institute of Public Health
  • MORIWAKI Hiroshi
    Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University
  • MIYAKODA Hidekazu
    Applied Biosystems Japan Ltd.
  • KAWASAKI Hideya
    Department of Applied Chemistry, Faculty of Chemistry, Materials and Bioengineering, Kansai University
  • ARAKAWA Ryuichi
    Department of Applied Chemistry, Faculty of Chemistry, Materials and Bioengineering, Kansai University

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抄録

A highly sensitive and simple method for the analysis of chlorothalonil was presented using a liquid chromatograph/mass spectrometer equipped with an atmospheric pressure photoionization (APPI) source. Chlorothalonil is one of the most extensively used fungicides. The major degraded product of chlorothalonil, 4-hydroxy-2,5,6-trichloroisonaphthonitrile (4OH-TPN), was also quantified with sensitivity similar to that of chlorothalonil. The method was applied to the determination of chlorothalonil in aqueous environment and food samples. The method detection limits (MDLs) of chlorothalonil for aqueous samples and cucumber were determined to be 0.18 and 3.2 ng g-1, respectively. At several estuarial locations, chlorothalonil was detected with a maximum of 1.1 ng L-1. On the other hand, 4OH-TPN was detected not from estuaries but from rivers with a maximum of 14 ng L-1.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 25 (5), 693-697, 2009

    社団法人 日本分析化学会

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