Measurement of natural radionuclides in NORM – inter-comparison exercise in the Czech Republic
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F25%3AN0000011" target="_blank" >RIV/86652052:_____/25:N0000011 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0969804325005536" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0969804325005536</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apradiso.2025.112208" target="_blank" >10.1016/j.apradiso.2025.112208</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of natural radionuclides in NORM – inter-comparison exercise in the Czech Republic
Original language description
The National Radiation Protection Institute in Prague organized a proficiency test (PT) on natural radionuclides measurement in samples characterized as NORM within the Czech legislation: industrial waste and residues with potentially increased content of natural sources of radiation. Handling, measurement and assessment of NORM samples is regulated by law, and can only be performed by laboratories authorized by the State Office for Nuclear safety (SUJB). Furthermore, the laboratories must follow a guideline document issued by SUJB. Four NORM materials were prepared: wastewater, sand filter, ash, and zircon flour. These materials are common in Czech environment and have different radiochemical properties, ensuring representativeness as well as diversity. The radionuclides to be reported were selected in accordance with the guideline document by SUJB. In solid samples, determination of six natural radionuclides was requested: 238U, 226Ra, 210Pb, 228Ra, 228Th, and 40K. For wastewater, gross alpha and beta were requested, followed by determination of several supplementary radionuclides. The reported results were evaluated with respect to assigned values, using relative deviation and zeta scores as performance indicators. A total of nine laboratories participated, and the overall evaluation of this PT will not only provide feedback on individual laboratory practices, but also offer valuable insight into common difficulties associated with following SUJB's guidelines: these will be useful during the next revision of the binding document. The PT was carried out according to the standard on Statistical methods used in proficiency testing by interlaboratory comparison (ISO 13528:2022).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Radiation and Isotopes
ISSN
0969-8043
e-ISSN
1872-9800
Volume of the periodical
226
Issue of the periodical within the volume
December
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
112208
UT code for WoS article
001589760500001
EID of the result in the Scopus database
2-s2.0-105017896014