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福島事故廃棄物を対象とした$$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd及び$$^{126}$$Sn分析法の開発

Development of $$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd and $$^{126}$$Sn analytical methods for radioactive waste from Fukushima Daiichi Nuclear Power Station

青野 竜士; 佐藤 義行; 島田 亜佐子; 田中 究; 上野 隆; 石森 健一郎; 亀尾 裕

Aono, Ryuji; Sato, Yoshiyuki; Shimada, Asako; Tanaka, Kiwamu; Ueno, Takashi; Ishimori, Kenichiro; Kameo, Yutaka

福島第一原子力発電所で生じた事故廃棄物を対象として抽出された処分安全評価上重要となる放射性核種のうち、分析手法が定まっていない$$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd及び$$^{126}$$Snの4核種の分析法を開発した。主要な分析対象試料として、福島第一原子力発電所構内で採取された滞留水・処理水を想定した。この滞留水・処理水中に含まれる$$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd及び$$^{126}$$Snに対して、目的核種の分離・精製法の開発、回収率向上に取り組み、この成果を本報告にまとめた。

We have developed analytical methods for $$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd and $$^{126}$$Sn, which are considered important in terms of the safety assessment of radioactive waste disposal. The methods are specialized for the wastes left after Fukushima accident. As the main analytical sample, we assumed accumulated water / treated water collected at Fukushima Daiichi Nuclear Power Station. As for $$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd and $$^{126}$$Sn contained in this accumulated water / treated water, we have worked on the development of separation and purification method of target nuclide and improvement of recovery, and summarized these results in this report.

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