Open AccessJournal Article
Gamma background radiation measurement in Lorestan province, Iran
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The average annual effective dose for gamma background radiation in Lorestan province has been 0.72 mSv, which was more than the global value (0.48 mSV) and a poor correlation coefficient between was observed altitude and absorbed dose rates.Abstract:
Background: The exposure of human being to ionize radiation from natural sources is a continuing, inescapable feature of life on earth. Direct measurement of absorbed dose rates in air has been carried out in many countries of the world during the last few decades. Such investigations can be useful for assessment of public dose rates, the performance of epidemiological studies, and keeping reference-data records to ascertain possible changes in the environmental radioactivity duo to nuclear, industrial, and other human activities. Materials and Methods: The measurements of the outdoor and indoor- environmental exposures including cosmic and terrestrial components were accomplished by a portable Geiger Muller detector (RDS -110). The measurements were made during daylight from September to October 2009, in five areas within nine big cities of Lorestan province. In each area, one building was randomly selected for indoor and outdoor measurements. Measurements were made for each region and an average value was used to calculate the exposure rate from gamma background radiation. Results: The results showed the Maximum and minimum outdoor dose rates as 166±44 and 65±8 nSvh-1 in Borujerd and Pol-e- dokhtar, respectively. The average of outdoor dose rates was determined 113±26 nSvh-1. Also the maximum and minimum values of indoor dose were 157±52 and 74±14 nSvh-1 in Borujerd and Pol-e-dokhtar, respectively. The average indoor dose rates were determined as 119±27 nSvh-1. Conclusion: The average annual effective dose for gamma background radiation in Lorestan province has been 0.72 mSv, with the range of 0.3– 0.6 mSv which was more than the global value (0.48 mSv). A poor correlation coefficient between was observed altitude and absorbed dose rates. Iran. J. Radiat. Res., 2011; 9(2): 8993read more
Citations
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Annual effective dose from environmental gamma radiation in Bushehr city.
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A national survey of natural radionuclides in soils and terrestrial radiation exposure in Iran.
Mohammad Reza Kardan,N. Fathabdi,A. Attarilar,M.T. Esmaeili-Gheshlaghi,M. Karimi,A. Najafi,S. S. Hosseini +6 more
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References
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Journal ArticleDOI
Environmental radioactivity measurements in Kastamonu region of northern Turkey.
Erol Kam,Ahmet Bozkurt +1 more
TL;DR: The measurement results obtained in this study indicate that the region has a background radiation level that is within the natural limits and shows no significant departure from the other parts of the country.
Journal ArticleDOI
Assessment of environmental radioactivity for Sanliurfa region of southeastern Turkey
TL;DR: In this paper, the level of background radiation for Sanliurfa province of southeastern Turkey was assessed using a plastic scintillator and the average absorbed dose was found as 60.9 nGy/h (corresponding to an effective dose of 74.7 μ Sv / y ).
Journal ArticleDOI
Assessment of annual effective dose due to natural gamma radiation in Zanjan (Iran).
TL;DR: The outdoor and indoor measurement of natural gamma radiation in Zanjan province (Iran) was made using a Geiger-Muller dosemeter, which calculated the average annual effective dose as 0.82 mSv, which is more than the same value worldwide.
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Gamma background radiation in Yazd province A preliminary report
TL;DR: This survey was carried out to provide a map of ambient gamma radiation of Yazd province and the probable effects of the existence of these mines on background radiation dose rates, and proves that the presence of uranium mines doesnt affect gamma background radiation of Yasd province.
Journal ArticleDOI
Study on external exposure doses received by the Cuban population from environmental radiation sources.
TL;DR: Assessment of doses received by the Cuban population due to the external exposure to environmental radiation sources found the average representative dose was estimated to be 298 +/- 17 microSv per year, which is within the range of those reported throughout the world by other authors.