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ID 14737
Eprint ID
14737
フルテキストURL
タイトル(別表記)
Basic study on the effects of the archeological investigation and the construction work on the environmental radiation
著者
永松 知洋 岡山大学自然生命科学研究支援センター
花元 克巳 岡山大学医学部 Kaken ID publons researchmap
小野 俊朗 岡山大学自然生命科学研究支援センター Kaken ID researchmap
山岡 聖典 岡山大学医学部 Kaken ID publons researchmap
抄録
In this paper, we investigated how the excavation of ruins and the construction work affected the environmental radiation in the Shikata campus of Okayama University (S-campus). The environmental radiation was steady in the S-campus until 1997, but began to change since 1998, while the ruin's survey and the construction work started frequently after 1998 in the S-campus. In general, the soil and the concrete include the natural radioisotope (uranium series and thorium series, etc). When ruins are surveyed, it is necessary to move a large amount of the soil. In addition, a large amount of the concrete is used for the construction work. To measure the environmental radiation, the monitor posts were set up on the east and west sides of the building of the Radioisotope Center (RIC). We sampled the soil in the container in each place. We used the high-purity germanium detector to analyze them. The monitor posts showed the difference in the in-air dose rate in each place in the S-campus. The in-air dose rate at the east side of the RIC was higher than that at the west side. The result of analysis showed that the soil includes the (40)K at the east side. While the specific activity of the 40K was 0.849Bq/g at the east side, the (40)K was hardly detected in the soil at the west side. The each soil included the 214-lead and 214-bismus ((214)Pb, (214)Bi), however, there was no significant difference in the specific activity of the each soil. The concrete included (40)K, whose specific activity was 0.492Bq/g. It was suggested that the change of the environmental radiation was attributed to radon and its daughter nuclides in the soil rather than the radiation from the concrete in the buildings.
キーワード
archeological investigation
construction work
environmental radiation
soil
concrete
備考
論文
発行日
2005-12
出版物タイトル
環境制御
出版物タイトル(別表記)
Environmental Research & Control
27巻
出版者
岡山大学保健環境センター環境安全部門
出版者(別表記)
Environmental Management and Safty Section, Health and Environmental Center, Okayama University
開始ページ
11
終了ページ
16
ISSN
0917-1533
NCID
AN1024789X
資料タイプ
紀要論文
言語
日本語
論文のバージョン
publisher
査読
有り
Eprints Journal Name
erc