Assessment of dose rates around Manisa (Turkey)
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Natural radionuclide activity concentration of surface soils at 64 locations in central Manisa were measured using gamma spectrometry (ORTEC). The natural gamma radioactivity of the terrestrial radionuclides in soil samples and the gamma-absorbed dose rates of these radionuclides in air were calculated. In this study, track etch film (CR-39) was used to determine the distribution of radon levels in dwellings. The average annual effective dose equivalents from the calculated outdoor terrestrial gamma radiation for a person in Manisa is 66 mu Sv, whilst the annual effective dose equivalent from Rn-222 is calculated to be 4.83 mSv/yr. (c) 2006 Elsevier Ltd. All rights reserved.