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  • Title: A study of background radioactivity level for Tekirdag, Turkey.
    Author: Kam E, Yarar Y, Bozkurt A.
    Journal: Radiat Prot Dosimetry; 2010 Jan; 138(1):40-4. PubMed ID: 19767602.
    Abstract:
    The level of background radiation for Tekirdag province of north-western Turkey was assessed in this study. Radon concentrations in indoor air were determined using CR-39 nuclear track detectors and the average (222)Rn activity was found to be 86 Bq m(-3) (equivalent to an annual effective dose of 2.2 mSv). Measurements of gamma doses in air were performed using plastic scintillators and the average absorbed gamma dose rates for indoor and outdoor were found to be 5.7 and 5 microR h(-1), respectively, corresponding to an annual effective dose of 300 microSv. The radionuclide activity concentrations in soil samples collected from the study area were measured through gamma-ray spectrometry and the average activities were determined as 29, 39 and 580 Bq kg(-1) for the natural radionuclides (238)U, (232)Th and (40)K, respectively, and 5.2 Bq kg(-1) for the fission product (137)Cs. The natural radioactivity sources resulted in an annual effective dose of 75 microSv. The radioactivity levels of drinking water samples were measured as 0.044 and 0.1 Bq l(-1) for gross alpha and gross beta activities using a low-background counting technique (equivalent to an annual effective dose of 9 microSv). The results of this study showed that the region's background radioactivity level is in agreement with most Turkish cities.
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