Determination of Pb-210 by direct gamma-ray spectrometry, beta counting via Bi-210 and alpha-particle spectrometry via Po-210 in coal, slag and ash samples from thermal power plant
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AuthorsŠešlak, Bojan Ž.
Đurašević, Mirjana M.
Erić, Milić D.
Jevremović, Aleksandar M.
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In order to compare three different techniques and estimate radiological impact, activity concentration of Pb-210 in coal, slag and ash samples from thermal power plant Nikola Tesla, Serbia, were measured, and results are presented in this study. Determination of Pb-210 was carried out in three ways: using HPGe gamma spectrometer and via in-growth of Po-210 and Bi-210 by alpha-particle spectrometry and proportional counting, respectively. The results obtained for three different techniques were compared. Statistical analysis and comparison of methods were carried out by combination of Z score and chi (2) statistical tests. Tests results, as well as values of measured activities concentrations obtained by alpha and gamma spectrometry, showed that gamma spectrometry is a valid alternative to time-consuming alpha spectrometry for low level activity measurements of Pb-210. This remark is also valid even for gamma spectrometers with poor efficiency in low energy region.
Keywords:Pb-210 / Po-210 / Bi-210 / Alpha-particle spectrometry / Gamma-ray spectrometry / Beta counting
Source:Journal of Radioanalytical and Nuclear Chemistry, 2017, 311, 1, 719-726
- Nuclear physics, methods and application (RS-171018)
- [451-03-3095/2014-09/15], [BI-RS/14-15-011]