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  1. 原著論文

Radon-Thoron discriminative measurements in the high natural radiation areas of Southwestern Cameroon

https://repo.qst.go.jp/records/47607
https://repo.qst.go.jp/records/47607
38ee91a3-8d11-4a1a-9ac0-d80140bd612b
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-01-06
タイトル
タイトル Radon-Thoron discriminative measurements in the high natural radiation areas of Southwestern Cameroon
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 Saidou

× Saidou

WEKO 477193

Saidou

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Tokonami, Shinji

× Tokonami, Shinji

WEKO 477194

Tokonami, Shinji

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ミロソラフ, ヤニック

× ミロソラフ, ヤニック

WEKO 477195

ミロソラフ, ヤニック

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al., et

× al., et

WEKO 477196

al., et

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ミロソラフ ヤニック

× ミロソラフ ヤニック

WEKO 477197

en ミロソラフ ヤニック

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抄録
内容記述タイプ Abstract
内容記述 Although indoor radon was initially measured in the uranium regions of Poli and Lolodorf using Electret Ionization Chambers, discriminative RADUET detectors were deployed in 70 houses of the high natural radiation areas of Bikoue and Ngombas in the uranium region of Lolodorf in Southwestern Cameroon. Radon and thoron concentrations were determined using Image-J and Microscope Methods for track evaluation. Radon and thoron concentrations follow lognormal distributions and ranged respectively from 27±26 to 937±5 Bq m-3 and from 48±40 to 700±128 Bq m-3. The arithmetic means of radon and thoron concentrations were found to be 92±3 Bq m-3 and 260±13 Bq m-3. Less than 2% of houses have indoor radon above the reference level of 300 Bq m-3 and 30 % of houses have thoron concentrations above 300 Bq m-3. Inhalation doses due to radon and thoron range respectively between 0.6- 17.7 mSv yr-1 and 0.2- 3 mSv yr-1 with the mean values of 1.4 mSv yr-1 and 1 mSv yr-1. The contribution of indoor thoron to the total inhalation dose ranges between 15%- 78.5% with the mean value of 47%. Thus thoron cannot be neglected when assessing radiation dose.
書誌情報 Journal of Environmental Radioactivity

巻 150, p. 242-246, 発行日 2015-09
出版者
出版者 Elsevier
ISSN
収録物識別子タイプ ISSN
収録物識別子 0265-931X
DOI
識別子タイプ DOI
関連識別子 10.1016/j.jenvrad.2015.09.006
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