クロスチェックによるカネミ油症ライスオイル中PCDD, PCDF及びPCBの分析  [in Japanese] Analysis of PCDDs, PCDFs and PCBs in Yusho Rice Oil by Cross-check  [in Japanese]

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Author(s)

    • 姚 元 Yao Yuan
    • 科学技術振興事業団戦略的基礎研究推進事業 Core Research for Evolutional Science and Technology(CREST), Japan Science and Technology Corporation
    • 益永 茂樹 [他] Masunaga Shigeki
    • 横浜国立大学環境科学研究センター環境基礎工学研究室 Institute of Environmental Science and Technology, Yokohama National University
    • 中西 準子 Nakanishi Junko
    • 横浜国立大学環境科学研究センター環境危機管理学研究室 Institute of Environmental Science and Technology, Yokohama National University

Abstract

One bottle of Yusho rice oil was obtained from a Yusho family in Fukuoka Prefecture in1998. The concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and biphenyls (PCBs) in the causal oil were analyzed with two different approaches for cross-checking and the obtained results agreed well. The individual concentrations of all the 17 2,3,7,8-substituted PCDD/F and 14 coplanar PCB (Co-PCB) congeners were elucidated for the first time. The PCDD, PCDF and PCB concentrations were found to be 0.60, 8.8 and 850 ppm, respectively. It was confirmed that PCDFs play a major role in the toxicity of Yusho oil. Based on our data, the smallest TEQ intake during the latent period was estimated to be 0.067 mg for Yusho patients. This value is approximately 60% of that previously reported, thus suggesting a lower minimum threshold level for the development of the toxic symptoms of Yusho. This information will be useful in the human health risk assessment of PCDD/Fs and PCBs.

Journal

  • Bulletin, Institute of Environmental Science and Technology, Yokohama National University

    Bulletin, Institute of Environmental Science and Technology, Yokohama National University 27(1), 25-32, 2001

    Yokohama National University

Keywords

Codes

  • NII Article ID (NAID)
    110000360660
  • NII NACSIS-CAT ID (NCID)
    AN00246482
  • Text Lang
    JPN
  • Article Type
    Departmental Bulletin Paper
  • Journal Type
    大学紀要
  • ISSN
    0286584X
  • NDL Article ID
    5858259
  • NDL Source Classification
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL Call No.
    Z16-902
  • Data Source
    NDL  NII-ELS  IR 
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