Determination of Plutonium in High Active Liquid Waste of Reprocessing Plant by Spectrophotometry using Neodymium as an Internal Standard

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駿河谷 直樹 ; 田口 茂郎 ; 佐藤 宗一 ; 北尾 貴彦 ; 雛 哲郎; 檜山 敏明

Surugaya, Naoki; Taguchi, Shigeo; Sato, Soichi; Kitao, Takahiko; Hina, Tetsuro; Hiyama, Toshiaki,

再処理施設における高放射性廃液中に含まれるPuの濃度を、迅速かつ正確に測定する手法を開発した。本法は、Ndを内標準物質とした吸光光度法を応用したもので、従来の分析法である同位体希釈質量分析法に変わる保障措置のための測定技術としての適用が期待できる。本報告では、測定原理及び実試料を用いた試験の結果について述べる。

A technique of measuring rapidly and correctly the concentration of Pu contained in the high radioactive liquid waste in a reprocessing plant has been developed. This method is based on spectrophotometry using Nd as an internal standard, and can be expected the application as measurement technology for the safeguards which has been utilizing the conventional method of isotope dilution mass spectrometry. This report describes the measurement principle and the result of the examination which used a real sample.