scholarly journals Natural Radioactivity in Soil and Water from Likuyu Village in the Neighborhood of Mkuju Uranium Deposit

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Najat K. Mohammed ◽  
Mohamed S. Mazunga
Keyword(s):  
Natural Radioactivity ◽  
Water Samples ◽  
Uranium Deposit ◽  
Atomic Energy Commission ◽  
Natural Radionuclides ◽  
Control Sample ◽  
Soil Samples ◽  
High Concentration ◽  
Average Activity ◽  
Radioactivity Levels

The discovery of high concentration uranium deposit at Mkuju, southern part of Tanzania, has brought concern about the levels of natural radioactivity at villages in the neighborhood of the deposit. This study determined the radioactivity levels of 30 soil samples and 20 water samples from Likuyu village which is 54 km east of the uranium deposit. The concentrations of the natural radionuclides 238U, 232Th, and 40K were determined using low level gamma spectrometry of the Tanzania Atomic Energy Commission (TAEC) Laboratory in Arusha. The average radioactivity concentrations obtained in soil samples for 238U (51.7 Bq/kg), 232Th (36.4 Bq/kg), and 40K (564.3 Bq/kg) were higher than the worldwide average concentrations value of these radionuclides reported by UNSCEAR, 2000. The average activity concentration value of 238U (2.35 Bq/L) and 232Th (1.85 Bq/L) in water samples was similar and comparable to their mean concentrations in the control sample collected from Nduluma River in Arusha.

Natural Radioactivity Levels and Radiological Hazards in Soil Samples Around Abu Karqas Sugar Factory

2017 ◽  
Vol 11 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Reda Elsaman ◽  
Mohammed Ahmed Ali ◽  
El-Montaser Mahmoud Se ◽  
Atef El-Taher
Keyword(s):  
Natural Radioactivity ◽  
Soil Samples ◽  
Sugar Factory ◽  
Radiological Hazards ◽  
Radioactivity Levels

scholarly journals Assessment of Natural Radioactivity Levels and Radiation Hazards for Soil Samples Used in Erbil Governorate, Iraqi Kurdistan

2019 ◽  
Vol 7 (1) ◽  
pp. 34 ◽  
Author(s):  
Zakariya A. Hussein
Keyword(s):  
Natural Radioactivity ◽  
Gamma Spectroscopy ◽  
Health Hazard ◽  
Natural Radionuclides ◽  
Soil Samples ◽  
Radiation Hazard ◽  
Lifetime Cancer Risk ◽  
Iraqi Kurdistan ◽  
Activity Concentrations ◽  
Radium Equivalent

In this work, the activity concentrations of natural radionuclides 226Ra, 232Th and 40K in soil samples from Erbil governorate, Iraqi Kurdistan were investigated by a gamma-spectroscopy system based on high-purity germanium (HPGe) detector. This is to assess the dose of radionuclides exposure to the population, knowing the health risks and to have a baseline for future changes in the environmental radioactivity. It was found that the activity concentrations of 226Ra, 232Th and 40K were ranged from (14.6 ± 1.6 to 38.2 ± 2.8 Bq.kg-1),  (4.5 ± 1.4 to 52.4 ± 5.8 Bq.kg-1) and ( 302.8 ± 12.6 to 388.6 ± 12.8 Bq.kg-1), respectively. The measured activity concentrations for these radionuclides were compared with the reported data of other countries and with the worldwide average activity of soil. Radium equivalent activities, absorbed dose rate, excess lifetime cancer risk and the values of hazard indices were calculated for the measured samples to assess the radiation hazard of the natural radioactivity in all samples to the people. It was concluded that the radium equivalent activities of the studied samples are below the internationally accepted values. These results show that annual effective dose absorbed via occupant from activity construction of soil samples used in the under place is below 1.0 mSv.y-1. It is concluded that the assessment radioactivity of soil are within acceptable levels and does not pose any health hazard to the population.

scholarly journals Estimation of radioecological parameters of soil samples from a phosphatic area

2016 ◽  
Vol 31 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Shaaban Harb ◽  
Noor Ahmed ◽  
Wael Badawy ◽  
Nagwa Saad
Keyword(s):  
Dose Rate ◽  
Annual Effective Dose ◽  
Natural Radionuclides ◽  
Significant Risk ◽  
Absorbed Dose ◽  
Soil Samples ◽  
Absorbed Dose Rate ◽  
Activity Concentrations ◽  
Average Activity ◽  
Range Of Values

The activity concentrations of natural radionuclides (226Ra, 232Th, and 40K) for a set of 31 agricultural soil samples from the Nile River banks in the area of El-Sebaiya city, Aswan Governorate, Egypt were measured by gamma-spectrometry. The study revealed that the average activity concentrations of natural radionuclides 226Ra, 232Th, and 40K were 23.2 ? 2.8Bq/kg, 21.1 ? 2.8 Bq/kg, and 218.6 ? 3.7 Bq/kg, respectively. The obtained results of the activity concentrations are within the range of values reported for neighbouring areas in Egypt. The values obtained for the hazard indices and the representative level index in all sampling sites were lower than unity, showing that there is no significant risk arising from the exposure to the soil in the studied area. The absorbed dose rate and annual effective dose in air outdoors and indoors were calculated from 226Ra, 232Th, and 40K in soil, the average values being 32.64 nGy/h, 40.06 ?Sv, and 160.25 ?Sv, respectively. The absorbed dose rate at the eastof El-Sebaiya city is higher than that obtained for the west because of higher concentrations of tri-calcium phosphate in the soil. The studied area is not significantly affected by the industrial activities, except for a few isolated spots.

scholarly journals Measurements of natural radioactivity in soil samples collected in the Kampinoski National Park

2019 ◽  
Vol 100 ◽  
pp. 00052
Author(s):  
Aneta Łukaszek-Chmielewska ◽  
Martin Girard ◽  
Olga Stawarz ◽  
Barbara Piotrowska ◽  
Karol Wojtkowski ◽  
...  
Keyword(s):  
Natural Radioactivity ◽  
National Park ◽  
Natural Radionuclides ◽  
Germanium Detector ◽  
Absorbed Dose ◽  
Soil Samples ◽  
Radiation Hazard ◽  
Absorbed Dose Rate ◽  
Radium Equivalent Activity ◽  
Mean Values

In this article are presented the results of measurements of natural radioactivity in twelve soil samples from the Kampinoski National Park by using high purity germanium detector (HPGe). The average values of the natural radionuclides 40K, 226Ra and 228Ac concentrations in the soil samples are 8.54, 6.65 and 206 Bq/kg respectively. Additionally radiation hazard indices were calculated to evaluate the radiological risk for the public and environment. The results show that the mean values of radium equivalent activity (Raeq) and gamma absorbed dose rate (D) in the air, outdoor annual effective dose equivalent (Eout), and representative level index (Iγ) for analyzed samples were lower than the limit recommended by the United Nations Scientific Committee on the Effect of Atomic Radiation (UNSCEAR). This study is the first to evaluate the radiological impacts in the investigation area.

scholarly journals Assessment of natural radioactivity levels and associated dose rates in soil samples from historical city Panipat, India

2017 ◽  
Vol 10 (3) ◽  
pp. 283-288 ◽  
Author(s):  
Amanjeet ◽  
Ajay Kumar ◽  
Suneel Kumar ◽  
Joga Singh ◽  
Parminder Singh ◽  
...  
Keyword(s):  
Natural Radioactivity ◽  
Soil Samples ◽  
Dose Rates ◽  
Radioactivity Levels

scholarly journals Determination of natural radioactivity in soil samples around gold mining area in Khamkeut district, Bolikhamxay Province, Laos using gamma ray spectrometer with NaI(Tl) detector

2018 ◽  
Vol 34 (3) ◽  
Author(s):  
Somsavath LEUANGTAKOUN
Keyword(s):  
Gamma Ray ◽  
Natural Radionuclides ◽  
Mining Area ◽  
Soil Samples ◽  
Gold Mines ◽  
Gamma Ray Spectrometer ◽  
Activity Concentrations ◽  
Radium Equivalent ◽  
Average Activity

This paper presented the method of determining the radioactivity of 40K, 226Ra and 232Th in soil samples by gamma-ray spectrometer using NaI (Tl) scintillation detector. The radioactivity of each isotope is calculated based on the net count rate in the energy window characteristic for the 40K, 226Ra and 232Th radioisotopes respectively. We have determined  activity concentrations of the natural radionuclides 226Ra,232Th and 40K in 15 soil samples collected around gold mines of Khamkeut district, Bolikhamxay Province, Laos. The average activity concentrations of the natural radionuclides 226Ra, 232Th and 40K are 46.58  ±  7.36 , 71.19  ±  5.42 and 574.62  ±  25.02 Bq.kg-1, respectively. The average activity concentrations of 226Ra and 232Th in this work are higher than those of Bolikhamxay Province, Laos and the world average values. The estimated average outdoor annual effective dose (E) and radium equivalent actitvity (Raeq) are 0.10  ±  0.004 mSv.yr-1 and 192.64  ±  16.12 Bq.kg-1, respectively.

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