Abstract
The Korea Research Institute of Standards and Science (KRISS) has been conducting proficiency tests of the radioactivity measurement of gamma-ray emitting radionuclides for domestic institutes in Korea. The test scheme used the z′-score with a robust analysis based on the International Standard Organization (ISO) 17043 and ISO 13528 standards for evaluating the measurement performance. The z′-score employed a robust standard deviation by Algorithm-A in the ISO 13528 standard instead of using a traditional standard deviation of participant results. The proficiency test materials (PTMs) were prepared by spiking a diluted standard solution of radionuclides of interest into acidified water with 1 M HCl. Combinations of 134Cs, 137Cs, 57Co, 60Co, 88Y, 113Sn, and 51Cr were used as PTMs. KRISS satisfies proficiency testing requirements, and the test is accredited by the Korea Laboratory Accreditation Scheme (KOLAS). KRISS has conducted proficiency tests annually since 2016, and more than 70 laboratories have tested over 650 test items so far. This study presents the results provided by the participants and the observed trends.
Similar content being viewed by others
References
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories. International Organization for Standardization (2017)
IAEA, Worldwide open proficiency test: determination of naturally occurring radionuclides in phosphogypsum and water, in IAEA/AQ/18. (International Atomic Energy Agency, Vienna, 2010)
R. Furukawa et al., Appl. Radiat. Isot. 126, 249 (2017)
KINS, Domestic inter-laboratory testing scheme, KINS CLEAN webpage (2013). https://clean.kins.re.kr/cros/cr01_001_00.jsp, Accessed 22 Aug 2022
ISO/IEC 17043, Conformity assessment–General requirements for proficiency testing. International Organization for Standardization (2010)
ISO 18589–3, Measurement of radioactivity in the environment -Soil- Part 3: Test method of gamma-emitting radionuclides using gamma-ray spectrometry. International Organization for Standardization (2015)
Ministry of Food and Drug Safety of Republic of Korea. “Food Code”, Republic of Korea-Ministry of Food and Drug Safety Notification No. 2022–56, Chapter 8, pp. 1341–1347 (2022)
ISO 13528, Statistical methods for use in proficiency testing by interlaboratory comparisons. International Organization for Standardization (2005)
J.-M. Lee et al., Appl. Radiat. Isot. 70, 1853 (2012)
K.B. Lee et al., Nucl. Instr. Meth. A 534, 496 (2004)
Acknowledgements
This work was supported by the Korea Research Institute of Standards and Science under the “Establishment of Measurement Standards for Radioactivity” research project.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Heo, D.H., Lee, J.M., Lee, K.B. et al. Proficiency test of radioactivity measurement of gamma-ray emitting radionuclides in Korea. J. Korean Phys. Soc. 82, 601–606 (2023). https://doi.org/10.1007/s40042-023-00707-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40042-023-00707-y