Title: Performance evaluation of European scale proficiency test on radon-in-water measurements in Europe
Authors: JOBBAGY VIKTORHULT MIKAEL
Citation: APPLIED RADIATION AND ISOTOPES vol. 160 p. 109111
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2020
JRC N°: JRC120402
ISSN: 0969-8043 (online)
URI: https://publications.jrc.ec.europa.eu/repository/handle/JRC120402
DOI: 10.1016/j.apradiso.2020.109111
Type: Articles in periodicals and books
Abstract: In 2018, a Europe wide proficiency test (PT) on measurements of the massic activity of 222Rn in drinking water was organised with the participation of 101 European environmental radioactivity monitoring laboratories. The performance of the participating laboratories was evaluated by comparing submitted results to the reference value using percentage deviation, z-score and zeta-score. It was found that 84% of the participants’ results were within the +/- 20% reference range. When analysing the zeta-score it was found that 76% of the participants' results were acceptable. The accompanied questionnaire and workshop helped to identify practices that could lead to erroneous results. As it was probably the largest scale PT on radon-in-water ever, the evaluation of results is representative of the quality of radon-in-water monitoring in the EU today.
JRC Directorate:Nuclear Safety and Security

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