Bibliographic Information
- Other Title
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- 沖縄島の陸水中ラドン濃度
- オキナワトウ ノ リクスイ チュウ ラドン ノウド
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Abstract
As a part of study to estimate the background radiation level in Japan, radon (^<222>Rn) concentrations of inland waters collected from Okinawa Island, main island of Okinawa prefecture, were measured with a simple liquid scintillation counter. The radon is an alpha emitting natural radioactive element with half-life of 3.8 days originated from the decay of ^<238>U. The arithmetic mean± standard deviation of the concentration of subsoil waters collected at 29 points was calculated to be 23.1±6.3 Bq L^-1 Relatively high concentrations of 36 Bq L^ -1 and 43 Bq L^-1 were found in Motobu area, northwestern part of the island. Also the concentrations of ground water samples collected at 4 points in Gyokusen-dou, a limestone cave in the southern part of the island, were estimated to be ND (< 2.3 Bq L^-1) - 4.6 Bq L^- 1.
紀要論文
Journal
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- BULLETIN OF THE FACULTY OF SCIENCE UNIVERSITY OF THE RYUKYUS
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BULLETIN OF THE FACULTY OF SCIENCE UNIVERSITY OF THE RYUKYUS (100), 1-4, 2015-09-30
琉球大学理学部
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Details 詳細情報について
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- CRID
- 1050855676752405376
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- NII Article ID
- 120005669617
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- NII Book ID
- AN00250774
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- ISSN
- 02869640
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- HANDLE
- 20.500.12000/32494
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- NDL BIB ID
- 026809754
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- Text Lang
- ja
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- Article Type
- departmental bulletin paper
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- Data Source
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- IRDB
- NDL
- CiNii Articles