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ID 19721
Eprint ID
19721
FullText URL
Title Alternative
The simplified method of measuring Radon in mineral waters by the liquid scintillation counter.
Author
Mifune, Masaaki
Abstract
鉱泉水中のラドンを測定するため,抽出法を省略し,少量の試料水を直接液状シンチレーターに溶解し,液体シンチレーション計数器を用いて放射能を測定し,次いで簡単な計算法により試料水中のラドン濃度を計算する簡易定量法を試みた。本法を用いて一鉱泉水のラドンを反復測定した際の精度は,σ=0.136nCi/l,CV=5.77 % ,(x=2.36n Ci/l)であった。次に本法でのRnの最少検出量は,0.2nCi/lである。原法と本法とを用いて得られた測定値の間には,r=0.996,y=0.818x+0.875なる相関関係が成立した。本法を使用すると,簡単な予備処理後,極短時間内にラドンの測定が可能なため,花崗岩地域の井水,鉱泉水中のラドンを定量するためには,有用な方法である。
Abstract Alternative
Radon in mineral waters was determined with simplicity by newly developed method. In this method, 2.0mℓ of water sample was directly mixed with 15 mℓ of Hionic-Fluor in a vial, which was then filled up with additional Hionic-Fluor ; 190 minutes were allowed for the radioactivity to equilibrate. The radioactiviity of Radon was measured by the Liquid Scintillation Counter (Tri-Carb 460C). Radon content was easily calculated with the proposed formula by an electric desk calculater. The reproducibility was proved CV=5.77 % ; the lowest detection limit was 0.2 nCi/l. An adequate correlation was obtained from the results of measurements compared with the original method ; r=0.996, y=0.818x×0.875.
Keywords
鉱泉水 (Mineral waters)
ラドン (Radon)
放射能泉 (Radioactive springs)
液体シンチレーション計数器 (Liquid scintillation counter)
Published Date
1987-08
Publication Title
環境病態研報告
Publication Title Alternative
Papers of the Institute for Environmental Medicine, Okayama University Medical Scool
Volume
volume58
Publisher
岡山大学医学部附属環境病態研究施設, 岡山大学医学部附属病院三朝分院
Publisher Alternative
Institute for Environmental Medicine, Okayama University Medical Scool
Start Page
17
End Page
21
ISSN
09133771
NCID
AN10084718
Content Type
Departmental Bulletin Paper
language
日本語
OAI-PMH Set
岡山大学
File Version
publisher
Refereed
False
Sort Key
5
Eprints Journal Name
mmc