Radioactivity concentrations and dose assessment for soil samples around Adana, Turkey (original) (raw)
Related papers
Annals of Nuclear Energy, 2013
In recent years, there has been great concern about analysis of radionuclide content in environmental samples (soil, water, etc.) in many countries. The aim of the present study is to analyze the activity concentrations of terrestrial (226 Ra, 232 Th and 40 K) and anthropogenic (137 Cs) radionuclides in surface soil samples collected from different locations in and around Kilis province using the high-resolution gamma spectrometer with HPGe detector and evaluate external ionizing radiation exposure in outdoor air. The mean values of the activity concentrations of 226 Ra, 232 Th, 40 K and 137 Cs in the soil samples were analyzed as 16.1, 15.0, 206.0 and 9.5 Bq kg À1 , respectively. Evaluated values of absorbed gamma dose rate in outdoor air and the corresponding external annual effective dose varied from 5 to 75 nGy h À1 with a mean value of 25 nGy h À1 and 6-92 lSv with a mean value of 31 lSv, respectively. These mean values were found to be within acceptable limits.
Radiation Protection Dosimetry, 2013
The purpose of this survey was to determine the distribution of terrestrial radionuclides (238 U, 232 Th and 40 K) in surface soil samples collected from different locations in and around Osmaniye and assess the radiological implications of outdoor external exposure. The activity concentrations of 238 U, 232 Th and 40 K in soil samples ranged from 2.6 to 38.1 Bq kg 21 with a mean of 10.4+ + + + +0.7 Bq kg 21 , 3.7-40.5 Bq kg 21 with a mean of 12.2+ + + + +0.7 Bq kg 21 and 30.0-639.7 Bq kg 21 with a mean of 243.4+ + + + +12.8 Bq kg 21 , respectively. The concentrations of these radionuclides, presented in this article, were compared with those obtained from similar studies related to Turkey reported in the literature as well as earth's crust average values. The results of the activity concentrations were used to assess the external absorbed gamma dose rate (GDR) in outdoor air and the annual effective dose (AED). The outdoor absorbed GDRs fluctuate from 5.2 to 53.6 nGy h 21 with a mean of 22.4+ + + + +9.5. The corresponding mean AED is found to be 0.03 mSv.
Naturally occurring radionuclide of terrestrial origin (also called primordial radionuclide) are present in various degrees in all media in the environment, including the human body itself. Their concentrations in environment decrease continually by decaying. The main objective of this study is to evaluate the radioactivity levels and health risks due to terrestrial radionuclide in soil of Yalova, northwestern Turkey. For this purpose, activity concentrations of radionuclide in soil and the environmental outdoor gamma dose rates (terrestrial and cosmic) have been investigated in the city of Yalova. In addition, maps for the radionuclide activity concentrations of soil and the outdoor gamma dose rates distributions have been plotted for the region. The average activities of radionuclide, 238 U, 232 Th, 226 Ra, 40 K, and 137 Cs in the soil were determined as 17.95 (8.5-37.3) Bq/kg, 26.87 (3.8-43.9) Bq/kg, 22.36 (8.3-41) Bq/kg, 419.32 (197.1-950.0) Bq/kg, 2.53 (0.5-13.4) Bq/kg, respectively, in the region. The average outdoor gamma dose rates due to terrestrial and cosmic radiations were found to be 49 nGy/h and 35 nGy/h with the total of 84 nGy/h outdoor gamma exposure rate in the region. Annual effective dose due to environmental outdoor gamma radiation exposures was determined as 103 nSv with the excess lifetime cancer risk of 0.042 x 10 -2 in the region. The results of the study were discussed with the studies done in the close cities and the worldwide averages.
Journal of Environmental Radioactivity, 2009
The objective of this study is to evaluate and map soil radionuclides' activity concentrations and environmental outdoor gamma dose rates (terrestrial and cosmic) in Kirklareli, Turkey. The excess lifetime cancer risks are also calculated. Outdoor gamma dose rates were determined in 230 sampling stations and soil samples were taken from 177 locations. The coordinates of the readings were determined by the Global Positioning System (GPS). The outdoor gamma dose rates were determined by Eberline smart portable device (ESP-2) and measurements were taken in air for two minutes at 1 m from the ground. The average outdoor gamma dose rate was 118 AE 34 nGy h À1 . Annual effective gamma dose of Kirklareli was 144 mSv and the excess lifetime cancer risk of 5.0 Â 10 À4 . Soil samples were analyzed by gamma spectroscopy. The average 226 Ra, 238 U, 232 Th, 137 Cs, and 40 K activities were 37 AE 18 Bq kg À1 , 28 AE 13 Bq kg À1 , 40 AE 18 Bq kg À1 , 8 AE 5 Bq kg À1 and 667 AE 281 Bq kg À1 , respectively. The average soil radionuclides' concentrations of Kirklareli were within the worldwide range although some extreme values had been determined. Annual effective gamma doses and the excess lifetime risks of cancer were higher than the world's average.
2018
The distribution of natural radioactivity in soils collected from uncultivated areas in Digor districts of Kars was investigated by using NaI(Tl) gamma-ray spectrometry. The concentration of the natural radio nuclides 226 Ra 232 Th, 40 K and 137 Cs in the 55 soil samples from the studied areas range from 21.6±7.0 to 55.7±8.2 Bqkg -1 , 45.0±14.7 to 94.7±15.3 Bqkg -1 , 474.5±0.0 to 666.5±9.2 Bqkg -1 and BDL to 13.3±1.5 Bqkg -1 , respectively. The determined mean values of activity concentrations of 226 Ra 232 Th and 40 K were used to calculate the radiation hazard indices in soil samples . In the studied area, the radium equivalent activity (Ra eq ) varied from 131.3 to 195.1 Bqkg -1 with the mean value of 171.5 Bqkg -1 and the open air absorbed gamma dose rate (ADR) varied from 61.7 to 88.0 nGyh -1 with the mean value of 79.0 nGyh -1 . The annual effective air dose rate (AED) due to the presence of radionuclides ranged between 75.7 and 107.9 µSv with the average value of 96.8 µSv. Th...
2021
There are given results of radioactivity research in different types of soil within the territory of some districts of Tbilisi. Twenty samples of brown and alluvial types have been selected from 20 locations. Up to 22 radionuclides were identified. Concentration of radionuclides of Th-232 family was in limits from 16.8 to 41.4 Bq/kg (average value of 22.6 Bq/kg), U-238 family – from 17.7 to 67.8 Bq/kg (average value of 29.3 Bq/kg), U-235 family - from 1.09 to 3.76 Bq/kg (average value of 1.77 Bq/kg). Also individual radionuclides have been identified: K-40 – from 365 to 618 Bq/kg (average value of 465 Bq/kg), Cs-137 – from 1.5 to 118 Bq/kg (average value of 19.9 Bq/kg); trace amounts of Be-7 were determined in several samples. Radium equivalent activity varied from 71.5 to 148 Bq/kg (average value of 95.8 Bq/kg. Annual effective dose varied from 0.042 to 0.088 mSv/y (average value of 0.058 mSv/y). There were marked some features of radionuclides distribution, in particular, dependin...
European Chemical Bulletin
Gamma-spectroscopy method has been used to determine the activity concentrations (in Bq kg-1) of natural radionuclides such as 238 U, 232 Th, and 40 K in soil samples collected from Tsalka region of south Georgia. Based on which contents of radionuclides in soil (in g kg-1 and ppm) were calculated. In addition, concentrations of artificial radionuclide of 137 Cs were determined, which has shown contamination character of study area. Based on the results of the analysis, some crucial physical values have been calculated, which are necessary for assessment of radiation exposure hazards for the population. Relevant conclusions have been drawn by comparing the results with previous work and recommendations of the international organizations.
Radiation Protection Dosimetry, 2014
In this study, the levels of the natural and artificial radioactivity in soil samples collected from surrounding of Karaman in Turkey were measured. Activity concentrations of the concerned radionuclides were determined by gamma-ray spectrometry using a high-purity germanium detector with a relative efficiency of 40 % at 1.332 MeV. The results obtained for the 238 U series ( 226 Ra, 214 Pb and 214 Bi), 232 Th series ( 228 Ac), 40 K and fission product 137 Cs are discussed. To evaluate the radiological hazard of radioactivity in samples, the radium equivalent activity (Ra eq ), the absorbed dose rate (D), the annual effective dose and the external (H ex ) and internal hazard index (H in ) were calculated and presented in comparison with the data collected from different areas in the world and Turkey.
Study of the radioactivity in environmental soil samples from Eastern Anatolia Region of Turkey
Radiochimica Acta, 2018
In this study, a detailed γ-ray spectrometer survey was performed to obtain the baseline data on natural and fallout radioactivity in soil samples (10–30 cm depth) collected from Iğdır which is a province in Eastern Anatolia Region of Turkey and located along the border with Armenia. Metsamor Nuclear Power Plant in Eastern Armenia is only about 20 km away from Iğdır province. The average activity concentrations of226Ra,232Th,40K and137Cs in the soil samples were found as 19.1±0.6 (range: 12.8–31.2 Bq kg−1), 21.9±0.6 (range: 11.6–36.8 Bq kg−1), 437.7±10.3 (range: 285.0–613.7 Bq kg−1) and 11.8±1.1 Bq kg−1, (range: 2.5–51.1 Bq kg−1), respectively. The radiological hazards caused by ionizing radiation emitted from these radionuclides on the population living in the region were assessed by estimating radiological parameters such as absorbed γ dose rate in outdoor and the corresponding annual effective dose rate from external exposure, annual effective dose rate from inhalation of radon a...