屋内ラドン濃度全国調査 Nationwide Indoor Radon Survey in Japan

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The final results of a nationwide indoor radon survey are presented based on one year measurements at more than 7, 000 houses throughout Japan. In conclusion, the annual average indoor radon concentrations in 5, 717 houses are finally obtained as the output of the survey after scrutinizing the raw data of more than 28, 000 measurements. The arithmetic mean and its standard deviation of radon concentration are given to be 20.8 and 18.8Bqm<sup>-3</sup>, respectively. The median, 90 percentile and 99.5 percentile were 16.0, 35.5 and 138Bqm<sup>-3</sup>, respectively. The arithmetic mean, median and 90 percentile of each prefecture are also presented to identify the regional variation of radon concentrations. Radon concentrations in wooden houses show regional differences closely related to granite distribution. However, radon concentrations in non-wooden houses show no typical pattern related to geology. The equivalent dose due to radon progeny in Japan is estimated to be 0.59mSvy<sup>-1</sup> applying the same assumptions given in the UNSCEAR 1993 Report to the arithmetic mean obtained in this survey.

収録刊行物

  • 保健物理 : hoken buturi  

    保健物理 : hoken buturi 32(1), 41-51, 1997-03-31 

    Japan Health Physics Society

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各種コード

  • NII論文ID(NAID)
    10002136345
  • NII書誌ID(NCID)
    AN00228458
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03676110
  • NDL 記事登録ID
    4184216
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z16-696
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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