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Plutonium isotopes in marine sediments after the Fukushima DNPP accident
https://repo.qst.go.jp/records/64666
https://repo.qst.go.jp/records/64666c8fffaed-b3d3-4fcf-96d5-4a85c6b69f00
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-07-17 | |||||
| タイトル | ||||||
| タイトル | Plutonium isotopes in marine sediments after the Fukushima DNPP accident | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Zheng, Jian
× Zheng, Jian× Aono, Tatsuo× Uchida, Shigeo× Zhang, Jing× Honda, Makio× 鄭 建× 青野 辰雄× 内田 滋夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The Fukushima Dai-ichi Nuclear Power Plant (DNPP) accident has caused serious contamination of the marine environment from atmospheric fallout deposition and the direct discharges of highly radioactive liquid wastes. In contrast to the immediate intensive studies on the distributions of released fission products, such as I-131, Cs-134 and Cs-137, information on the possible contamination by actinides in the marine environment is quite limited. In this study, we report the first data-set on the distribution of Pu isotopes in surface sediments in the Pacific 30 km off Fukushima after the Fukushima DNPP accident. Activities of Pu-239+240 and Pu-241, and atom ratios of Pu-240/Pu-239 and Pu-241/Pu-239 in surface sediments collected in July-August, 2011 were analyzed to make a quick assessment on the environmental impact of the possible Pu contamination. The observed Pu-239+240 activities and Pu-240/Pu-239 atom ratios are comparable to those previously reported in marine sediments in the western North Pacific and its marginal seas, and in Japanese estuaries before the accident. The Pu contamination from the Fukushima DNPP accident was not observed in marine sediments outside the 30 km zone. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 2012 ASLO Aquatic Sciences Meeting | |||||
| 発表年月日 | ||||||
| 日付 | 2012-07-13 | |||||
| 日付タイプ | Issued | |||||
