Environmental Behavior of Perchlorate and its Effect on the Agricultural Products in Kyoto

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  • Yamada Etsu
    Center for Environmental Science, Kyoto Institute of Technology Department of Chemistry and Material Technology, Kyoto Institute of Technology
  • Asano Hiroki
    Department of Chemistry and Material Technology, Kyoto Institute of Technology
  • Fuse Yasuro
    Center for Environmental Science, Kyoto Institute of Technology

Bibliographic Information

Other Title
  • 京都における環境中過塩素酸塩の動態と農作物などへの影響
  • キョウト ニ オケル カンキョウ チュウ カエンソ サンエン ノ ドウタイ ト ノウサクブツ ナド エ ノ エイキョウ

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Description

   A determination of trace perchlorate in environmental samples by suppressor ion chromatography with an online preconcentration technique was developed. This method was applied to the determination of perchlorate in environmental samples such as rainwater, atmospheric aerosol, river, tap and ground waters, and the behavior and origin of perchlorate in the environment were investigated. Moreover, environmental effect of perchlorate on agricultural products and soils was investigated. In 2007-2009, the perchlorate concentration in rainwater had a level of N.D.-3.53 μg/L and an average of 0.72±0.70 μg/L (n = 41). The seasonal variation and average of perchlorate in atmospheric aerosol, 0.02～9.64 ng/m3 and 0.62±1.32 ng/m3 (n = 132), showed a high level from February to April, which pollutants containing perchlorate may be transported from China to Japan by backward trajectory analysis. The perchlorate concentrations in river, tap and ground water samples of Kinki area were lower than the drinking standard of USA (2 μg/L), which may be a safety level for human health. The concentrations of perchlorate in the leaves of vegetables such as lettuce and cabbage were relatively high. The perchlorate data from cow's milk samples from Kyoto(mean 22.6±7.61 μg/L) in 2009 were higher on average than in 2005. Then, perchlorate may be concentrated in the leaves of crops and indirectly affect cow's milk.

Journal

  • Journal of Environment and Safety

    Journal of Environment and Safety 3 (2), 2_97-2_104, 2012

    Academic Consociation of Environmental Safety and Waste Management, Japan

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