Abstract:Specific activities (Bq/kg and ppm) of naturally occurring radionuclides were measured for about 57 samples from some household kits. The maximum specific activity values were 76.12, 118.37 and 3340.6 Bq/kg for U-238, Th-232 and K-40, respectively. The external exposure rate (µR/h) and dose rate (nG/h) were calculated. The maximum mean annual effective dose due to U-238 from Chinese ceramic dishes was 59.24 µSv/y, while the maximum mean annual effective doses due to Th-232 and K-40 were 126.31 and 63.81 µSv/y,… Show more
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