On the Concentrations of Radioactive ^<137>Cs and Stables Cs in the Water of the Isolated Undisturbed Mountain Pond "Yasha-ga-Ike"
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概要
- 論文の詳細を見る
The concentrations of radioactive fallout ^<137>Cs and stable Cs in the water of the isolated undisturbed pond "Yasha-ga-Ike", located at an elevation of 1099 m near the ridge of mountain in Fukui Pref., were determined. The in-situ collection of ^<137>Cs was done by pumping the water to the packed column of a, crylic fibre adsorbent, impregnated with copper hexacyanocobalt ferrate, and the ^<137>Cs collected was determined by gamma spectrometry with Ge detector. The water sample was analyzed by ICP-MS to determine the concentration of stable Cs. The temperature of the nine water samples taken in three years ranged from 12.5 to 25.5 ℃. The concentration ranged from 0.00023 to 0.00085 Bq/1 for ^<137>Cs and from 0.005 to 0.018 ppb for stable Cs. Both these concentrations increased with *, , increasing water temperature, and the ratio of ' Cs concentration to stable Cs was regarded to be a constant of about 50 Bq/mg. These results indicate that an equilibrium in water between fallout ^<137>Cs in the sixties and the stable Cs existing for a very long time has been established and hence they behave in the same way in the water.
- 福井工業大学の論文
- 2002-03-20
著者
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KIMURA M.
Department of Obstetrics and Gynecology, Toranomon Hospital
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Kawamoto K.
Research. Reactor Inst. Kyoto Univ.
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Iwamoto K.
Department of Applied Physics and Chemistry, Fukui University of Technology
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Ando K.
Department of Applied Physics and Chemistry, Fukui University of Technology
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Moriyama H.
Faculty of Engineering, Kyoto Univ.
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Takada J.
Research. Reactor Inst., Kyoto Univ.
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Amano H.
Japan Atomic Energy Research. Inst.
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Moriyama H.
Faculty Of Engineering Kyoto Univ.
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Takada J.
Research. Reactor Inst. Kyoto Univ.
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AMANO H
Japan Arteriosclerosis Longitudinal Study (JALS) Group
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Kawamoto K..
Research. Reactor Inst., Kyoto Univ.
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