Volume 9, Issue 3 (Iranian Journal of Radiation Safety and Measurement 2021)                   IJRSM 2021, 9(3): 31-38 | Back to browse issues page

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Asadi Mohammad Abadi A, Rahimi M, Jabbari-Koopaei L. Measurement of dissolved radon concentration in groundwater samples of Shahre Babak city and estimation of annual effective absorbed dose. IJRSM. 2021; 9 (3) :31-38
URL: http://rsm.kashanu.ac.ir/article-1-601-en.html
Payame Noor University, Tehran Branch
Abstract:   (431 Views)
One of the most important natural sources of radioactivity is 222Rn radon gas, which is produced deep in earth with a half-life of 3.83 days from the decay of 226Ra radium in the 238U uranium decay chain. Some of the radon gas dissolves in groundwater and enters the body through drinking water and the other part through the inhalation of radon gas in the air. One of the most important risk factors of high radon concentration in the body is lung and stomach cancer. In this study, the concentration of dissolved radon gas of 44 groundwater samples around of Shahre Babak fault was measured using RAD7 detector. Also, the annual effective absorbed dose was calculated for infants, children and adults. Data was analyzed by one sample t-test. The results showed that, the concentration of radon gas in 29.54% of the samples is higher than 11 Bq/l. Also, the minimum and maximum annual effective absorbed doses for infants, children and adults were 69.01±46.00 µSv/y and 747.52±128.18 µSv/y, 33.08±22.05 µSv/y and 357.77±61.46 µSv/y and 24.10±16.07 µSv/y and 260.68±44.78 µSv/y respectively. According to the results, it can be said that in some areas, natural radiation exposure is high due to the high concentration of radon. However, the annual effective absorbed dose can be reduced by informing the residents about the dangers of radon gas.
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Type of Study: Research | Subject: Special

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