Institute for Agro-Environmental Sciences, NARO

Chemical Analysis Unit

We develop analytical methods to reveal the amounts and chemical forms of hazardous chemicals (eg. As, Cd, synthetic organic chemicals) in agricultural products and environments. For this purpose, we employ advanced analytical instruments, such as nuclear magnetic resonance (NMR) spectrometer, inductively coupled plasma-mass spectrometers (ICP-MS), high resolution gas-chromatography mass spectrometers (HR GC-MS), high-performance liquid chromatography (HPLC) etc. Most of the instruments are installed in the Advanced Analysis Center, NARO (NAAC), and all of the members of this research unit cooperate with NAAC. The main research topics of this unit are as follows:

  • Clarify the chemical forms of hazardous chemicals in agricultural products and soil environments, and determine the factors affecting the behavior of the chemicals in the environments;
  • Reduce/remove the risks caused by hazardous chemicals in soils and water;
  • Clarify the behavior of perfluorinated compounds in the environments;
  • Develop simplified, environmental friendly, and/or cost-efficient analytical methods for quantifying hazardous chemicals by applying micro extraction technique, antigen-antibody interactions etc., and validate the efficiency of the developed methods as official analytical methods.
  • Unit Leader

    Yuso KOBARA
    Research Topic: Risk reduction of pesticides / New soil disinfestations

    Unit Members

    Research Topics
    Heesoo EUN Principal Researcher Analysis with HR GC-MS
    Koji BABA Principal Researcher Analysis with ICP-MS
    Eiki WATANABE Principal Researcher Analysis with HPLC

    Research Publications

    • Watanabe E, Seike N, Motoki Y, Inao K, Otani T (2016) Potential application of immunoassays for simple, rapid and quantitative detections of phytoavailable neonicotinoid insecticides in cropland soils. Ecotoxicology and Environmental Safety 132: 288?294
    • Watanabe E, Iwafune T, Baba K, Kobara Y (2016) Organic solvent-saving sample preparation for systematic residue analysis of neonicotinoid insecticides in agricultural products using liquid chromatography-diode array detection. Food Analytical Methods 9: 245-254
    • Inui H, Hirota M, Goto J, Yoshihara R, Kodama N, Matsui T, Yamazaki K, Eun H (2015) Zinc finger protein genes from Cucurbita pepo are promising tools for conferring non-Cucurbitaceae plants with ability to accumulate persistent organic pollutants. Chemosphere 123: 48-54
    • Hiradate S, Morita S, Hata K, Osawa T, Sugai K, Kachi N (2015) Effects of soil erosion and seabird activities on chemical properties of surface soils on an oceanic island in Ogasawara Islands, Japan. Catena 133: 495-502
    • Baba K, Arao T, Yamaguchi N, Watanabe E, Eun H, Ishizaka M (2014) Chromatographic separation of arsenic species with pentafluorophenyl column and application to rice. Journal of Chromatography A 1354: 109-116