Low energy scintillation spectrometry for direct determinations of U-238 and Pb-210 in coal and ash samples

WOS: A1996TM58500017Fly ash, bottom ash and coal samples from a power plant operating with uranifereous coal were analyzed for their Pb-210 and U-238 contents by means of a technique developed in low energy scintillation gamma-spectrometry. Results were compared with the Ra-226 (eU) contents determined with high energy spectrometry. The measurements of U-238, Th-234 and Pb-210 contents have shown significant departure from radioactive equilibrium indicating that the coal was mined from young deposits. The redistribution of radionuclides in the ash samples was also investigated and the enrichment factors were determined