若狭地区における屋外ラドン濃度 Radon-222 Concentration in Outdoor Air at Wakasa District

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著者

    • 小川 喜弘 OGAWA Yoshihiro
    • 近畿大学理工学部原子炉工学科 Department of Nuclear Engineering, Faculty of Science and Technology, Kinki University
    • 山崎 敬三 YAMASAKI Keizo
    • 京都大学原子炉実験所放射線管理研究部門 Division of Radiation Protection, Kyoto University Research Reactor Institute
    • 辻本 忠 TSUJIMOTO Tadashi
    • 京都大学原子炉実験所放射線管理研究部門 Division of Radiation Protection, Kyoto University Research Reactor Institute

抄録

To obtain the basic data for radon, we carried out the measurement of the <sup>222</sup>Rn concentration in outdoor air at Wakasa district (21 measurement points) with a cup monitor for 449 days. From the comparisons between <sup>222</sup>Rn concentrations and exposure rates or <sup>226</sup>Ra radioactivities in soil, the following conclusions were made.<br>1. The range of <sup>222</sup>Rn concentrations averaged for 449 days were from 12.4Bq/m<sup>3</sup> to 1.9Bq/m<sup>3</sup>. The seasonal variation of <sup>222</sup>Rn concentration showed low concentrations from spring to summer.<br>2. 1Bq/m<sup>3</sup> of <sup>222</sup>Rn concentration was estimated to contibute to about 0.5nGy/h of exposure rate.<br>3. The clear correlation between <sup>222</sup>Rn concentration and <sup>226</sup>Ra radioactivity in soil was observed. From the correlation obtained, the remote source component of <sup>222</sup>Rn concentration in outdoor air was estimated to be about 2Bq/m<sup>3</sup>. 100Bq/kg of <sup>226</sup>Ra radioactivity in soil was estimated to produce about 7Bq/m<sup>3</sup> of <sup>222</sup>Rn concentration in outdoor air through various complex paths from soil.

収録刊行物

  • 保健物理 : hoken buturi  

    保健物理 : hoken buturi 30(4), 303-308, 1995-12-01 

    Japan Health Physics Society

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各種コード

  • NII論文ID(NAID)
    10002135626
  • NII書誌ID(NCID)
    AN00228458
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03676110
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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