Tritium and iodine-129 concentrations in precipitation at Tsukuba, Japan, after the Fukushima Daiichi Nuclear Power Plant accident
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- Maruoka Teruyuki
- Faculty of Life and Environmental Sciences, University of Tsukuba
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- Kawamuto Takamasa
- Department of Chemistry, Faculty of Science, Gakushuin University
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- Ohno Takeshi
- Department of Chemistry, Faculty of Science, Gakushuin University
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- Muramatsu Yasuyuki
- Department of Chemistry, Faculty of Science, Gakushuin University
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- Matsuzaki Hiroyuki
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo
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- Matsumoto Takuya
- Isotope Hydrology Section, International Atomic Energy Agency
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- Aggarwal Pradeep
- Isotope Hydrology Section, International Atomic Energy Agency
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説明
<p>The earthquake off the Pacific coast of Japan and the subsequent tsunami on March 11, 2011, triggered a series of accidents in the Fukushima Daiichi Nuclear Power Plant (FNPP1). The accidents caused the release of a mixture of radioactive substances into the environment. This study measured the concentration of tritium (3H) and iodine-129 (129I) in rainwater samples collected at Tsukuba, 170 km southwest of the plant, during the year following the accident. High 3H concentrations were observed in the rainwater samples collected within one month after the FNPP1 accident. 3H concentrations decreased steadily over time and returned to the levels before the accident. Concentrations of 129I also decreased over time. However, pulses of high 129I concentrations were observed at several other times following the accident. The 129I concentrations were found to be correlated with iron concentrations in rainwater. It is likely that iron oxide, which can absorb iodate ions (IO3–), was the carrier of radiogenic iodine. This study concludes that 129I and also 131I, which is one of the most harmful radionuclides produced in nuclear reactors, can be redistributed to the atmosphere in the months following the deposition of radiogenic iodine on the ground.</p>
収録刊行物
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- GEOCHEMICAL JOURNAL
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GEOCHEMICAL JOURNAL 51 (5), 449-455, 2017
一般社団法人日本地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204554767488
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- NII論文ID
- 130006146243
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- NII書誌ID
- AA00654975
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- ISSN
- 18805973
- 00167002
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- HANDLE
- 2241/00149125
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- NDL書誌ID
- 028583503
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- NDL
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