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Determination of U, Th and K in bricks by gamma -ray spectrometry, X-ray fluorescence analysis and neutron activation analysis
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SYSNO ASEP 0479667 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Determination of U, Th and K in bricks by gamma -ray spectrometry, X-ray fluorescence analysis and neutron activation analysis Author(s) Bártová, H. (CZ)
Kučera, Jan (UJF-V) RID, ORCID, SAI
Musílek, L. (CZ)
Trojek, T. (CZ)
Gregorová, E. (CZ)Number of authors 5 Source Title Radiation Physics and Chemistry. - : Elsevier - ISSN 0969-806X
Roč. 140, NOV (2017), s. 161-166Number of pages 6 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords Gamma-ray spectrometry ; neutron activation analysis ; environmental dosimetry Subject RIV CB - Analytical Chemistry, Separation OECD category Analytical chemistry R&D Projects LM2015056 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UJF-V - RVO:61389005 UT WOS 000411533500031 EID SCOPUS 85011340408 DOI 10.1016/j.radphyschem.2017.01.035 Annotation Knowledge of the content of natural radionuclides in bricks can be important in some cases in dosimetry and application of ionizing radiation. Dosimetry of naturally occurring radionuclides in matter (NORM) in general is one of them, the other one, related to radiation protection, is radon exposure evaluation, and finally, it is needed for the thermoluminescence (TL) dating method. The internal dose rate inside bricks is caused mostly by contributions of the natural radionuclides U-238, Th-232, radionuclides of their decay chains, and 40K. The decay chain of U-238 is usually much less important.
The concentrations of U-238, Th-232 and K-40 were measured by various methods, namely by gamma -ray spectrometry, X-ray fluorescence analysis (XRF), and neutron activation analysis (NAA) which was used as a reference method. These methods were compared from the point of view of accuracy, limit of detection (LOD), amount of sample needed and sample handling, time demands, and instrument availability.Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2018
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