Radioactive investigation of NORM samples from Southern Kuwait soil using high-resolution gamma-ray spectroscopy

Bajoga, A.D.; Alazemi, N.; Regan, P. H.; Bradley, D.A.

doi:10.1016/j.radphyschem.2015.01.041

Cited by 35 publications

(6 citation statements)

References 21 publications

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“…Accordingly, the calculated mean radium equivalent activity was established to be 47 Bq/kg. The recommended maximum value of Ra eq is 370 Bq/kg 40 . All estimated values of Ra eq in this study are much lower than the recommended value.…”

Section: Resultsmentioning

confidence: 99%

Vertical distribution and radiological risk assessment of 137Cs and natural radionuclides in soil samples

Ahmad

Al-Ghouti

AlSadig

et al. 2019

Sci Rep

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The aims of this study were to investigate the vertical distributions of natural radionuclides 232 Th, 226 Ra and 40 K as well as anthropogenic radionuclide 137 Cs in soil samples and to analyze the correlation among the radioactivity of these radionuclides and the physiochemical characteristics of soil samples namely pH, grain size, carbonate content and organic matter. Risk assessment of the radiological hazard has also been estimated. Forty-four soil samples were collected from eleven locations in Qatar at four depth levels from 0 to 16 cm. The average concentrations of 232 Th, 226 Ra, 40 K and 137 Cs in the soil depth of 16 cm were 10, 17, 201 and 4 Bq/kg, respectively, which were within the reported world mean. The external absorbed gamma dose rate, the annual effective dose, the mean radium equivalent activity, the external hazard index and the lifetime cancer risk were 22 nGy/h, 0.027 mSv/y, 47 Bq/kg, 0.125 and 0.096 × 10 −3 , respectively. These values were far below the minimum recommended international values. The level of radioactivity concentrations in the soil was affected by the physiochemical characteristics of the soil. The positive correlation with highest R 2 value was found among the radioactivity concentrations of 232 Th and 40 K and the soil clay content. Total organic carbon was also positively correlated for 226 Ra and 137 Cs activity concentrations, whereas, carbonate content was negatively correlated with the radioactivity concentrations of 232 Th and 40 K. As far as soil moisture content is concerned, the positive correlation with highest R 2 value was obtained for 226 Ra activity concentrations.

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Section: Resultsmentioning

confidence: 99%

Vertical distribution and radiological risk assessment of 137Cs and natural radionuclides in soil samples

Ahmad

Al-Ghouti

AlSadig

et al. 2019

Sci Rep

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“…The knowledge of radionuclides distributions in the sediments acts an essential part in monitoring of environmental contamination and assessment of radiological hazard arising from natural sources. For this purpose, in the recent years many studies give an importance to the measurements of the activity concentrations of natural radionuclides and their hazard on human health [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Levels and effects of natural radionuclides in sediment banks of Rhumel River (Northeast Algeria)

Bouhila

Benrachi

Ramdhane

2018

Cumhuriyet Science Journal

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Activity concentrations of natural radionuclides in Boumerzoug River sediment (the main tributary of Rhumel river) have been measured using high resolution HPGe detector. The activity concentrations of the samples were range from 16.662.32 Bq/kg to 43.484.03 Bq/kg with mean value of 26.641.33 Bq/kg for 226 Ra, 20.011.98 Bq/kg to 32.713.85 Bq/kg with the mean value 25.951.46 Bq/kg for 232 Th and 81.7033.59 Bq/kg to 259.2038.80 Bq/kg with the mean value 164.5011.30 Bq/kg for 40 K. These values were used to estimate the radiation hazard indices. The absorbed dose and annual effective dose were evaluated to assess the radiation risk due to the use of these sediments.

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“…The calculated values for external and internal hazard indexes for soil samples are higher than unity (permissible level). The values of hazard indexes (H ex and H in) must not exceed dose equivalent limit of 1 mSv y -1 in order to radiation hazard to be negligible [20,25]. Exceedance of the recommended upper limit is noted in 12 sampling sites.…”

Section: Resultsmentioning

confidence: 99%

“…Assessment of radiological hazard parameters due to natural radioactivity such as absorbed dose rates, annual effective dose, radium equivalent activity, external and internal hazard indexes are mostly used to assess radiological implications to human body [17][18][19][20]. The absorbed dose rate in air due to gamma-rays radiation emitted from decay of radionuclides depends on the specific activity concentration of these radionuclides in soil.…”

Section: Theorymentioning

confidence: 99%

Natural Radionuclides Determination and Radiological Hazard Assessments in Soil from Tual and Kei Islands, Indonesia

et al. 2020

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Natural radionuclides 226 Ra, 232 Th and 40 K in soil are the primary component of the background exposure sources of the population. Study of the external exposure due to gamma-ray radiation of natural radionuclides is important because this may contribute significantly to the total annual individual dose. The purpose of this study is to investigate the natural radionuclides in soils collected from Tual and Kei islands and assess the radiological hazard due to natural radionuclides contents in soil. The soil samples were analyzed for natural radionuclides 226 Ra, 232 Th and 40 K using gamma ray spectrometry. Radiological hazard parameters were estimated from the activity concentration of these radionuclides in order to assess health implication of exposure of the general public. The activity concentrations of 226 Ra, 232 Th and 40 K in soil samples varied from 7.50 Bq kg-1 to 6326 Bq kg-1 , 0.99 Bq kg-1 to 157 Bq kg-1 , 2.97 kg-1 to 98.91 Bq kg-1 with the average value of 2162 Bq kg-1 ; 69.68 Bq kg-1 and 30.74 Bq kg-1 , respectively. The absorbed dose rates due to the presence of 226 Ra, 232 Th and 40 K, in soil samples in the studied area vary between the range of 4.88 nGy h-1 and 3018.80 nGy h-1 with the average value of 1042 nGy h-1. The corresponding outdoor annual effective doses ranged between 0.01 mSv y-1 and 3.70 mSv y-1 with the average value of 1.28 mSv y-1. Radium equivalent activities are calculated to be in the range of 10.42 Bq kg-1-6553.03 Bq kg-1 with the average value of 2264 Bq kg-1. The external and internal hazard indexes vary from 0.03 to 17.71 with the average value of 6.12 and 0.05 to 34.81 with the average value of 11.96, respectively. All calculated average radiological hazard indices were higher than the limits recommended for individual members of the public.

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Radioactive investigation of NORM samples from Southern Kuwait soil using high-resolution gamma-ray spectroscopy

Cited by 35 publications

References 21 publications

Vertical distribution and radiological risk assessment of 137Cs and natural radionuclides in soil samples

Vertical distribution and radiological risk assessment of 137Cs and natural radionuclides in soil samples

Levels and effects of natural radionuclides in sediment banks of Rhumel River (Northeast Algeria)

Natural Radionuclides Determination and Radiological Hazard Assessments in Soil from Tual and Kei Islands, Indonesia

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