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:: Volume 20, Issue 1 (1-2022) ::
Int J Radiat Res 2022, 20(1): 223-228 Back to browse issues page
Measurement of 226-Ra, 232-Th, 40-K and 137-Cs concentrations in sediment samples and determination of annual effective dose due to these radionuclides in vicinity of hot springs in Kerman Province
P. Mehnati, A. Jomehzadeh, V. Doostmohammadi
Department of Medical Physics, Medical Radiation Sciences Research Team, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran , v64mohamadi@gmail.com
Abstract:   (631 Views)
Background: Natural and artificial radioactive materials are the most important sources of radiation for human existing in all over the world, thus investigating their radioactivity is of great importance because of their ionizing properties and harmful effects on human health. Therefore, this study was conducted to measure radionuclides concentrations of 226Ra, 232Th, 40K and 137Cs in sediment samples collected from various hot springs in Kerman province and also determining received annual effective dose. Materials and Methods: Thirteen sediment samples were collected from different hot springs and concentrations of radionuclides in sediment samples were measured via spectrometry method and using HPGe detector. To evaluate radiation hazards caused by these radionuclides, radium equivalent activity, absorbed dose rate in air, and annual effective dose of samples were calculated. Results: Concentrations of 226Ra, 232Th, 40K and 137Cs in sediment samples varied from 21.01±0.71 to 193.16±1.72, 16.84±1.21 to 245.92±2.69, 90.13±3.37 to 667.81±14.59 and <MDA to 5.81±0.66 Bqkg-1, respectively. Also, minimum and maximum values of annual effective dose were determined as 0.17±0.00 and 1.48±0.01 in mSvy-1, respectively. Conclusion: Comparison of radionuclides concentrations and annual effective dose obtained in this study with the worlds̓ average values determined by UNSCEAR (2000) reports showed that concentrations of 226Ra and 232Th in 69% and concentration of 40K in 46% of measured samples were higher than the worlds̓ average values. Also, annual effective dose of 30% of samples was found to be higher than the worlds̓ average value.
 
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Type of Study: Original Research | Subject: Radiobiology
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Mehnati P, Jomehzadeh A, Doostmohammadi V. Measurement of 226-Ra, 232-Th, 40-K and 137-Cs concentrations in sediment samples and determination of annual effective dose due to these radionuclides in vicinity of hot springs in Kerman Province. Int J Radiat Res. 2022; 20 (1) :223-228
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Volume 20, Issue 1 (1-2022) Back to browse issues page
International Journal of Radiation Research
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