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| NKS Programme Area: | NKS-B | | Research Area: | Measurement Strategy, technology and QA | | Report Number: | NKS-415 | | Report Title: | Simultaneous Determination of Isotopes of Pu, Am and Cm in Reactor Water Samples –Report of OptiMethod 2018 project | | Activity Acronym: | OPTIMETHOD | | Authors: | Xiaolin Hou, Stefan Allard, Niklas Hansson, Antti Hatakka, Petri Hovi, Mats Eriksson, Grzegorz Olszewski, Susanna Salminen-Paatero, Filippa Bruzell, Tommy Suutari, Lina Ekerljung, Angelica Andersson, Maria Davidsson, Helene Öhlin, Hanna Åberg, Maria Anderot, Annika Tovedal, Satu Rautio, Satu Kangas, | | Abstract: | This report presents the progress on the NKS-B OptiMethod project which was conducted in 2018, aiming to establish a Nordic optimal method for the determination of isotopes of plutonium, americium and curium in nuclear and environmental samples. The capacity and the analytical methods used in Nordic labs for determination of alpha emitters were reviewed and summarized. 11 Nordic labs in Denmark, Finland and Sweden can determine individual alpha emitters including 238Pu, 239, 240Pu, 241Am, 242Cm and 243, 244Cm in nuclear (reactor and spent fuel pool water) and/or environmental samples. Alpha spectrometry is used in most of labs for the measurement, sequential separation using different combination of ion exchange and extraction chromatography, e.g. UTEVA-TRU, TEVA-UTEVA-TRU, Dowex-TRU and TEVA-DGA columns are often used for separate Pu, Am and Cm from matrices and each other. An inter-comparison exercise for analysis of a spiked water and a real reactor water was organized, 11 Nordic labs participated in this exercise and reported the analytical results of isotopes of plutonium, americium and curium. The results reported by the most labs agree with each other with only 1-2 outlying data for each radionuclide. The problems and strategies in the analysis of alpha emitters in the Nordic labs were summarized and discussed, a further investigation for solving these problems and establishment of an optimal method for determination of alpha emitters in nuclear and environmental samples was proposed. | | Keywords: | Alpha emitter; radioanalysis; reactor water; inter-comparison; plutonium; americium; curium | | Publication date: | 25 Jan 2019 | | ISBN: | ISBN 978-87-7893-504-5 | | Number of downloads: | 2316 | | Download: |  NKS-415.pdf |
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