Oxidation of Molecular Tritium by Surface Soils
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概要
- 論文の詳細を見る
The conversion of atmospheric molecular tritium (HT) to tritiated water in soils was examined. The oxidation rate of HT varied with soil depth, temperature and soil water content. Among three sandy loam soils, rate constant was highest in the top section (0-5 cm) of grassy forest soil, 0.196/min, and in lower sections with soil depths of 5 to 10 cm and 10 to 15 cm, the rate constants were one fourth and one eighth, respectively, of that of the top section. The rate constants of the top sections of paddy and upland fields were 0.038/min and 0.058/min. Oxidation occurred over a broad temperature range from 0 to 75℃. Optimal water content for HT oxidation ranged from 10 to 25% of soil dry weight. The addition of KCN or NaN_3 to the soil partially decreased HT oxidation and pretreatment with chloroform or acetone (20%) reduced the oxidation rate by a half. HT oxidation activity in the surface soil (0-5 cm) under anaerobic conditions was somewhat less than that under aerobic conditions, but below this depth, the activity was essentially the same under either condition.
- 日本放射線影響学会の論文
著者
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一政 満子
茨城大学理学部
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一政 満子
茨城大学 理学部
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ICHIMASA YUSUKE
Department of Environmental Sciences, Faculty of Science, Ibaraki University
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AZUMA YUKO
Department of Biology, Faculty of Science, Ibaraki University
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KOMURO MAHO
Department of Biology, Faculty of Science, Ibaraki University
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FUJITA KAZUE
Department of Biology, Faculty of Science, Ibaraki University
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AKITA YASUKAZU
Department of Biology, Faculty of Science, Ibaraki University
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Ichimasa Yusuke
Department Of Biology Faculty Of Science Ibaraki University
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Ichimasa Michiko
日本原子力研究所
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Ichimasa Michiko
Department Of Biology Faculty Of Science Ibaraki University
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Fujita Kazuko
Radiat. Hazards Res. Group Nirs
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Fujita Kazuko
電力中央研究所
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Fujita Kazuko
Department Of Biology Toho University School Of Medicine:division Of Biomolecular Science Graduate S
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Azuma Yuko
Department Of Biology Faculty Of Science Ibaraki University
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Komuro M
Department Of Biology Faculty Of Science Ibaraki University
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Fujita Kazue
Low Dose Radiat. Res. Center Central Res. Inst. Electric Power Industry
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Akita Yasukazu
Department Of Biology Faculty Of Science Ibaraki University
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Ichimasa Y
Ibaraki Univ. Mito Jpn
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Fujita Kazuko
Toho Univ. School Of Med. Dept. Biol.
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Fujita Kazuko
Toho Univ. Graduate Sch. Of Biomolecular Sci .
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