陸水系における^<137>Csの放射生態に関する研究-沼底土壌における^<137>Csの結合形態別分析- Radioecological Studies of ^<137>Cs in Limnological Ecosystems-Analysis on the Bonding Form of ^<137>Cs in Pond Sediments-

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<I>In order to investigate in more detail on the</I><SUP>137</SUP>Cs<I>concentration in pond sediments, we have carried out analysis on the bonding forms of</I><SUP>137</SUP>Cs<I>in pond sediments. The existing rate of different bonding forms of</I><SUP>137</SUP>Cs<I>in pond sediments was found to be below 5% for F1: exchangeable and F2: bound to carbonates, 18-24% for F3: bound to iron and manganese oxides, 14-17% for F4: bound to organic matter and 54-60% for F5: residual (mainly, bound to silicate minerals) . Furthermore, we have investigated the relations among the</I><SUP>137</SUP>Cs<I>concentration in each place, the ignition loss, the total carbon and the cation exchange capacity of pond sediment, respectively. We have found a tendency that the larger the ignition loss, the total carbon and the cation exchange capacity are, the higher the</I><SUP>137</SUP>Cs<I>concentration is. On the other hand, about 90% of</I><SUP>40</SUP>K<I>in pond sediments is in the form of F5, and the bonding forms of</I><SUP>137</SUP>Cs<I>and</I><SUP>40</SUP>K<I>are obviously different regardless of the fact that both are alkaline metals.</I>

収録刊行物

  • Radioisotopes  

    Radioisotopes 49(2), 65-71, 2000-02-15 

    公益社団法人 日本アイソトープ協会

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各種コード

  • NII論文ID(NAID)
    10004587557
  • NII書誌ID(NCID)
    AN00351589
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    00338303
  • NDL 記事登録ID
    5259060
  • NDL 雑誌分類
    ZM35(科学技術--物理学) // ZN36(科学技術--原子力工学・工業) // ZP2(科学技術--化学・化学工業--物理化学) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z15-20
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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