Preparation of Pu, U mixed liquid spike for isotope dilution mass spectrometry; Influence of long-term storage of spikes on the determination of Pu and U

Sato, Hinata; Horigome, Kazushi; Yamamoto, Masahiko; Taguchi, Shigeo

no journal, , 

Isotope dilution mass spectrometry (IDMS), which can measure U and Pu with high accuracy, is applied to determine U and Pu for the nuclear material accountancy in Tokai Reprocessing Plant. In the past, authors prepared a liquid spike containing mg amounts of Pu and U in a vial as a spike for U and Pu in dissolved solutions of U and Pu mixed oxide powder. In this study, the influence of long-term storage of liquid spike on the analytical results has been evaluated.