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海産物中トリチウムの迅速分析法の改良

Simplification of tritium analysis in seafood

桑田 遥*; 御園生 敏治 ; 寺島 元基 ; 藤原 健壮 ; 北村 哲浩  

Kuwata, Haruka*; Misono, Toshiharu; Terashima, Motoki; Fujiwara, Kenso; Kitamura, Akihiro

海産物中の有機結合型トリチウム(Organically Bound Tritium/OBT)の分析の前処理工程を改良し、簡略化を行った。乾燥時間の短縮のため、凍結乾燥工程に加温乾燥の工程を追加し、さらに共試料の最適化を図ることで、通常2週間程度かかる凍結乾燥が数日で恒量になることが確認された。また燃焼行程においても燃焼回数を減らすことで前処理時間の簡略化を図った。

Simplification of the processes and reduction of the duration were required for the purpose of rapid analysis and obtaining more data on environmental monitoring at the accident for emergency response. We are applying the analytical system composed of the TFWT separation process by means of freeze-drying and the OBT separation process by means of oxygen combustion vessel.

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