Radioactive waste in metallurgical industryJamnik Srpčič, Jan (Avtor) Kosec, Borut (Mentor) thoriumalpha spectrometrygamma spectrometrysample preparationseparationefficiencyIn diploma work it is proven that activity of 232Th can be correctly estimated by gamma spectrometry from mesuring activity of it's doughter products. The conclusion was made based on comparable activity obtained while measuring 228Ac and 212Pb with gamma spectrometry and activity of 232Th with alpha spectrometry. The radioactivity of samples with different fraction sizes from Hackman canyon was analyzed. The activity decreasing with increasing fraction size was found. We used eight different fraction sizes ranging from below 0.05 mm to 10 mm. There is also included information about thorium separation from environmental sample using method TEVA Resin and efficiency mesurement of gamma spectrometer.20172017-09-20 14:13:14Diplomsko delo/naloga95412VisID: 57310sl