A preliminary report on the determination of natural radioactivity levels of the State of Qatar using high-resolution gamma-ray spectrometry

Al-Sulaiti, Huda; Regan, P. H.; Bradley, D.A.; Malain, D.; Santawamaitre, T.; Habib, A. F.; Matthews, Marcus; Bukhari, S.; Al-Dosari, M.

doi:10.1016/j.nima.2009.11.029

Cited by 30 publications

(33 citation statements)

References 15 publications

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“…The value for 40 K is 347.3 76.0 Bq/kg, which is about 25% less the world mean value of 400 Bg/kg, while that for 137 Cs is 10.0 70.2 Bq/kg. The relatively high caesium activity concentration value from this sample could be related to 'soil factors' mentioned above, which effects the movement of rainwater (Wallbrink et al, 1994) The results are consistent with levels reported by Saad and AlAzmi (2002), and similar previous studies from the middle-eastern region (Bou-rabee and Bem, 1996;Bou-rabee, 1997;Tabassum et al, 2012, Al-Sulaiti et al, 2010. Results for all specific activities are less than the world average values.…”

Section: Radioactive Secular Equilibriumsupporting

confidence: 90%

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

Bajoga

Alazemi

Regan

et al. 2015

Radiation Physics and Chemistry

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Section: Radioactive Secular Equilibriumsupporting

confidence: 90%

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

Bajoga

Alazemi

Regan

et al. 2015

Radiation Physics and Chemistry

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“…The results of specific of natural radioactivity concentration ( 226 Ra, 232 Th and 40 K) in the present study revealed the highest specific activity in granite samples of 226 Ra was 145.3 Bq/Kg for Chinese sample (GR10) while the lowest specific activity was 9.2 Bq/Kg for Indian sample (GR8), the results presented in Table- The variation of the specific activity concentration ( 226 Ra, 232 Th and 40 K) in the present study of flooring materials due to the geochemical characteristics (mineral content, materials) and geology of the region [18]. Table-3.…”

Section: Results and Discussion Specific Activitymentioning

confidence: 50%

Evaluation of Natural Radioactivity in Granite and Marble used as Flooring Materials in Baghdad Province/ Iraq

Zeyad

Al-Fatlawy

2018

ijs

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Twenty four samples of various granites and marble used common as flooring materials were collected from many factories and market in Baghdad Province, Iraq. Natural radioactivity of 226 Ra, 232 Th and 40 K in the samples was measured by using high purity germanium detectors with an efficiency of 40%. The Specific activity concentration in granite samples ranged from 9.20 to 79.64 Bq/kg, 10.50 to 229.40 Bq/kg and 185.30 to 1391.20 Bq/kg for 226 Ra, 232 Th and 40 K, respectively. The estimated of radiological parameters: radium equivalent activity (R eq) , activity concentration Index (I) and hazard indices (internal (H in ) and External (H ex )) that associated with the radiation hazard in the samples. The results of activity specific concentrations and radiological parameters of 226 Ra, 232 Th and 40 K were compared with the reported data of the worldwide limit of building materials.

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“…The measured BIR values were as a result of terrestrial gamma contribution which were within the dose rate measurement of 10 nSv/hr to about 180 nSv/h obtained in the Southern and other regions of Nigeria except for Jos, Plateau State that is about 0.2 µSv/hr [36] due to mining activities. The calculated GDR arising from terrestrial gamma of BIR measurement for entire four zones of the study area was with mean of 9.312 nGy/hr which was lower when compared with world mean of 59 nGy/hr [32,35]. Also, the AEDR from both terrestrial outdoor and indoor gamma from absorbed gamma dose rate were subsequently estimated for outdoors with mean value of 6.83 mSv/yr, and the evaluated indoor AEDR with mean value of 21.85 mSv/yr were within admissible value when compared with world mean of 460 mSv.…”

Section: Discussion -Radiological Hazard Indicesmentioning

confidence: 70%

“…The major reason outdoor AEDR is lower than the AEDR indoor is that more time is spent indoors as well as radiation contributions from building materials. The acceptable annual effective dose for public without any constraint is 1 mSv/yr for the purpose of safety and with constraint of 0.5 mSv/yr [32,33,35]. Furthermore, the estimated ELCR evaluated was with the mean value of 0.05 × 10 -3 , which was lower when compared with world mean value of 0.29 × 10 -3 [32,35].…”

Section: Discussion -Radiological Hazard Indicesmentioning

confidence: 99%

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Assessment of Radiological Hazard Indices from Exposures to Background Ionizing Radiation Measurements in South-South Nigeria

Ekong¹,

Akpa²,

Umaru³

et al. 2019

IJEMA

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Radioactivity in the environment from sources of natural and human activities resulting in planned, emergency and existing exposure to human population, environment and other biota has led to growing apprehensions in Nigeria and the world. The existing exposure situations mainly from natural radionuclides, present in the earth crust from creation emits background ionizing radiation leading to gamma dose exposures. The objective of this study was to assess the background ionizing radiation and associated radiological hazard indices in Itu, Nigeria located at 5010'0" N 7059'0" E, and establish an eco-radiological baseline data prior to the construction of any nuclear fission reaction facility in the area. A systematic random method of measurement was employed within demarcated monitoring zones of entire geological map of Itu, Nigeria. The global positioning system finder (GARMIN Etrex 10) was used for data point location, while RDS-31S/R Multipurpose survey meter was used for dose rate measurement. The background ionizing radiation measurement obtained ranged from 0.041 ± 0.002-0.045 ± 0.002 µSv/hr with overall mean of 0.042 ± 002 µSv/hr, which was lower than the world mean of 0.2 µSv/hr. Radiological hazard indices arising from the background ionizing radiation measurement were also evaluated. The mean estimated Gamma Dose Rate was 9.312 nGy/hr, the terrestrial outdoor Annual Effective Dose Rate arising from gamma was 6.83 mSv/yr, that of indoor was 21.85 mSv/yr and Excess Life Cancer Risk was 0.05 × 10-3. The mean evaluated radiological hazard indices were found to be below admissible limits, and thus poses no significant radiological health threat to the populace. Therefore, the assessment demonstrates that there is no elevated level of dose rate, which is makes it safe for human habitation, but care should be taken to avoid increase radiation level from human activities. It is recommended that constant radiological monitoring be encourage, and the data considered as radiological baseline in Itu, Nigeria.

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A preliminary report on the determination of natural radioactivity levels of the State of Qatar using high-resolution gamma-ray spectrometry

Cited by 30 publications

References 15 publications

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

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

Evaluation of Natural Radioactivity in Granite and Marble used as Flooring Materials in Baghdad Province/ Iraq

Assessment of Radiological Hazard Indices from Exposures to Background Ionizing Radiation Measurements in South-South Nigeria

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