Intercomparison exercise on difficult to measure radionuclides in spent ion exchange resin

Anumaija Leskinen, Eric Dorval, Emilie Baudat, Celine Gautier, Solveig Stordal, Susanna Salminen-Paatero

Research output: Contribution to journalArticleScientificpeer-review


A need for method validation in radiochemical analyses of decommissioning waste is a challenging task due to lack of commercial reference materials. Participation in an intercomparison exercise is one way for a laboratory to assess their performance and validate their analysis results. A three-year project within the Nordic Nuclear Safety Research (NKS) community was initiated in order to carry out intercomparison exercises on difficult to measure (DTM) radionuclides in real decommissioning waste. Both Nordic and Non-Nordic laboratories participated. This paper reports the results from the final year of the project focusing on beta- and gamma emitter (i.e., easy to measure, ETM) analysis in spent ion exchange resin. The assigned values were derived from the participants' results according to ISO 13528 standard and the performances were assessed using z scores. The results showed generally good performances for both DTMs and ETMs.
Original languageEnglish
JournalJournal of Radioanalytical and Nuclear Chemistry
Pages (from-to)77-94
Number of pages18
Publication statusPublished - 10 Dec 2022
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 116 Chemical sciences
  • Difficult to measure radionuclides
  • Intercomparison exercise
  • Decommissioning waste
  • ISO 13528
  • Spent ion exchange resin

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