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"Short-term, Cheap and Quick", Trace of new radical treatment for radiocesium contaminated of rice

Research Project

Project/Area Number 16K00908
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Eating habits
Research InstitutionThe University of Tokyo

Principal Investigator

Higaki Shogo  東京大学, アイソトープ総合センター, 助教 (50444097)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords放射性セシウム / コメ / 水田 / 経年変動 / 移行率 / 原発事故 / 土壌
Outline of Final Research Achievements

A basic data necessary for analysis of radiocesium transfer from paddy soil or reservoir to rice were clarified. It was clarified that there are seasonal fluctuation and new inflow in radiocesium concentration in the reservoir. In addition, it was clarified that the chemical form in which only cesium exists was different from other alkali metal elements. It was also clarified that the state of existence is different between non-radioactive cesium and Cs-137 derived from the Fukushima nuclear accident.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、直接的に米の放射性セシウム汚染根治療法の提案には至らなかったものの、今後の解析を考える上での基礎となるデータである。また、極端な放射性セシウム濃度の変動は、原発事故によって特定の時間帯に一定の割合で放出したと考えられている水に不溶で比放射能の高い放射性セシウム含有微粒子の存在が原因である可能性が否定できず、今後、同分野の研究を進める必要があると指摘できる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2018 2017

All Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 安定同位体を用いた水田土壌の除染2018

    • Author(s)
      出沢良樹、 三好弘一、桧垣正吾、森一幸、世良耕一郎、矢永誠人
    • Organizer
      2018日本放射化学会年会・第62回放射化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] イネおよび田水中の微量元素のPIXE分析(V)2018

    • Author(s)
      矢永誠人、出沢良樹、三好弘一、桧垣正吾、森一幸、世良耕一郎
    • Organizer
      日本放射線安全管理学会第17回学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 福島県森林下流域におけるコメへの放射性セシウム移行メカニズムの解明2018

    • Author(s)
      森井志織、桧垣正吾、矢永誠人、三好弘一、森一幸、久保謙哉
    • Organizer
      楢葉町におけるイノベーション・コースト構想促進事業ワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] Mechanism of Cs-137 Transfer to Rice in Forest Downstream Area of Fukushima2017

    • Author(s)
      Shogo Higaki, Makoto Yanaga, Hirokazu Miyoshi and Kazuyuki Mori
    • Organizer
      The 1st International Symposium of the network-type Joint Usage/Research Center for Radio Disaster Medical Science
    • Place of Presentation
      広島大学(広島県広島市)
    • Year and Date
      2017-02-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 福島県森林下流域におけるコメへの放射性セシウム移行メカニズムの解明2017

    • Author(s)
      森井志織、桧垣正吾、矢永誠人、三好弘一、森一幸、久保謙哉
    • Organizer
      第14回日本放射線安全管理学会12月シンポジウム
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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