Observation of Tritium Behavior Both in Monthly Precipitation in Niigata City and in Spring Water at Top of Mt. Zao and Some Mountains in Fukushima Prefecture After the Fukushima Dai-ichi Nuclear Power Plant Accident

• Wang Ying

  Graduate School of Science and Technology, Niigata University

• Morita Shogo

  Graduate School of Science and Technology, Niigata University

• Kataoka Noriaki

  Graduate School of Science and Technology, Niigata University

• Imaizumi Hiroshi

  Graduate School of Science and Technology, Niigata University

• Kano Naoki

  Graduate School of Science and Technology, Niigata University

抄録

In 2011, the released radioactive materials including tritium (T) from damaged reactors at Fukushima Dai-ichi nuclear power plant has caused much environmental problems. After the Fukushima Dai-ichi Nuclear Power Plant Accident, the specific activity of T in precipitation was increased in Niigata city. In this study, each monthly precipitation (imitative ground infiltrated precipitation) was collected at the rooftop of Niigata University. Such a sample was subsequently enriched by electrolytic enrichment method (SPE method), and the specific activity of T of each enriched sample was measured by low-background liquid scintillation counter. In addition, the relation between specific activity of T and nssCa²⁺ (i.e., non-sea-salt Ca²⁺) concentration in monthly precipitation was also discussed. Moreover, the concentrations of cations, i.e., Na⁺, K⁺, Ca²⁺, and Mg²⁺, in monthly precipitation and the specific activity of T in spring water at top of Mt. Zao (and other mountains in Fukushima prefecture) were also measured. Based on the above-mentioned matters, it was found that the influence of the Fukushima Dai-ichi Nuclear Power Plant Accident on environment in Niigata city almost disappeared after four months from the accident.

収録刊行物

• ＲＡＤＩＯＩＳＯＴＯＰＥＳ

  ＲＡＤＩＯＩＳＯＴＯＰＥＳ 65 (10), 409-414, 2016

  公益社団法人 日本アイソトープ協会

キーワード

• Fukushima Dai-ichi Nuclear Power Plants
• monthly precipitation
• tritium
• non-sea-salt Ca²⁺
• spring water
• ion concentration in precipitation

詳細情報

• CRID: 1390282679133468928
• NII論文ID: 130005421408
• NII書誌ID: AN00351589
• DOI: 10.3769/radioisotopes.65.409
• ISSN: 18844111
• ISSN: 00338303
• NDL書誌ID: 027691676
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027691676
• Web Site: https://www.jstage.jst.go.jp/article/radioisotopes/65/10/65_651002/_pdf
• 本文言語コード: en
• データソース種別:
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