Hadi Nakhzari Moghadam
Abstract
Abstract Background and Aim: Humans in their environments are always exposed to radiation from radioactive materials in construction materials. Since humans are not far from these materials, the probability of radiation exposure is high. This is a dosimetric study of travertine stones used in Zahedan ...
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Abstract Background and Aim: Humans in their environments are always exposed to radiation from radioactive materials in construction materials. Since humans are not far from these materials, the probability of radiation exposure is high. This is a dosimetric study of travertine stones used in Zahedan in 2020 to determine the relationship between stone color and radioactivity. Materials and Methods: The building stones that existed and were used in Zahedan city were identified and listed. A total of 70 samples of travertine were analyzed by the MKS model pen dosimeter for determining gamma Dose Rate (EDR) as microsievert per hour, gamma Equivalent Dose (ED) as millisievert, and beta flux density as parts per square centimeter per minute (part/cm2.min). Results: The highest mean EDR was in travertine rocks in cream color as 0.15 μSv/h and the lowest was 0.01 μSv/h in white rock. The highest mean beta flux density was observed in travertine rocks in the cream color sample as 0.0016 part/cm2.min. The ED value of all samples was determined to be zero. Conclusion: The maximum amounts of EDR and beta flux for travertine rocks were related to cream-colored rocks, which were slightly higher than the global average. The average EDR for travertine rocks was slightly higher than the allowable limit. Also, the beta flux in travertine rocks was lower than the allowable limit. The mean value of beta beam flux density in the ambient air was zero. In all samples, the amount of ED was zero. The amount of background radiation in the ambient air of Zahedan was the global average.