Determination of natural radioactive elements in Abo Zaabal, Egypt by means of gamma spectroscopy

Morsy, Zeinab; El-Wahab, M.A.; El-Faramawy, Nabil

doi:10.1016/j.anucene.2012.01.003

Cited by 39 publications

(11 citation statements)

References 16 publications

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“…The genetic relevance of the dose equivalent received each year by the reproductive organs (gonads) of the exposed population is represented by the annual gonadal equivalent dose (Morsy et al 2012). Within this context also, the activity bone marrow and the bone surface cells are inclusive by UNSCEAR (1988) as organs of interest.…”

Section: Annual Effective Dose Equivalentmentioning

confidence: 99%

Evaluation of radiological risks due to natural radioactivity around Lynas Advanced Material Plant environment, Kuantan, Pahang, Malaysia

Kolo

Aziz

Khandaker

et al. 2015

Environ Sci Pollut Res

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Understanding the public awareness concerning the Lynas Advanced Material Plant (LAMP), an Australian rare earths processing plant located in Malaysia, a radiological study in soil and water samples collected at random surrounding the LAMP environment was undertaken using HPGe gamma-ray spectrometry. The mean soil activities for (226)Ra, (232)Th, and (40)K were found to be 6.56 ± 0.20, 10.62 ± 0.42, and 41.02 ± 0.67 Bq/kg, respectively, while for water samples were 0.33 ± 0.05, 0.18 ± 0.04, and 4.72 ± 0.29 Bq/l, respectively. The studied areas show typical local level of radioactivity from natural background radiation. The mean gamma absorbed dose rate in soils at 1 m above the ground was found to be 11.16 nGy/h. Assuming a 20 % outdoor occupancy factor, the corresponding annual effective dose showed a mean value of 0.014 mSv year(-1), significantly lower than the worldwide average value of 0.07 mSv year(-1) for the annual outdoor effective dose as reported by UNSCEAR (2000). Some other representative radiation indices such as activity utilization index (AUI), H ex, H in, excess lifetime cancer risk (ELCR), and annual gonadal dose equivalent (AGDE) were derived and also compared with the world average values. Statistical analysis performed on the obtained data showed a strong positive correlation between the radiological variables and (226)Ra and (232)Th.

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Section: Annual Effective Dose Equivalentmentioning

confidence: 99%

Evaluation of radiological risks due to natural radioactivity around Lynas Advanced Material Plant environment, Kuantan, Pahang, Malaysia

Kolo

Aziz

Khandaker

et al. 2015

Environ Sci Pollut Res

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“…The Annual Gonadal Dose Equivalent (AGDE) or annual genetically significant dose equivalent (AGSDE) is a parameter for detecting the genetic significance of the yearly dose equivalent received by the people's reproductive organs (gonads) (Morsy et al 2012). AGDE was calculated because of gonads such as bone marrow and bone surface cells that are sensitive to radiation.…”

Section: ) Annual Gonadal Dose Equivalent (Agde)mentioning

confidence: 99%

Evaluation of Rock Radiation Hazards for Construction Applications in Parts of Southwestern Nigeria

Ademila¹

2020

JSR

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Geophysical investigation involving the radiometric method was carried out around some selected rock outcrops (finegrained granite (FGG), charnockite (CCK) and granite gneiss (GGN)) in Southwestern Nigeria to assess its natural radioactivity and radiation hazards. Three hundred and six (306) stations were occupied along six traverses varying from 200-300 m using gamma-ray spectrometer. The average elemental and activity concentrations for 40 K, 238 U and 232 Th are 2.85±1.08%, 3.08±0.46 ppm, 22.38±8.15 ppm and 892.72±337.83, 38.06±5.67, 90.84±33.09 Bq kg-1 respectively. Observed highest values of radioactivity concentration of 40 K, 238 U and 232 Th were 1190.01±605.65 (GGN 2), 46.88±25.75 (CCK 2) and 121.01±20.53 (CCK 1) Bq kg-1. Mean annual outdoor and indoor effective dose rates of 0.114 and 0.442 mSv y-1 , hazard indices of 0.639 mSv y-1 (Hex) and 0.742 mSv y-1 (Hin) are below the world stipulated standard. Thus, the rocks pose insignificant radiation hazards to people and are safe as construction materials. The elevated levels of annual gonadal dose equivalent (AGDE) and excess lifetime cancer risk (ELCR) of 777.485 µSv y-1 and 1.545×10-3 respectively suggest regular monitoring of radioactivity levels of geological materials from sources before their adoption in construction. Appropriate agency should be constituted to consistently monitor radiation and prevent associated health problems.

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“…The reported gamma dose rate and annual effective dose in other places, such as Lake Bosumtwi Basin in Ghana [ 18 ] is higher than these areas. But, Abo Zaabal in Egypt [ 19 ], Niger Delta (Biseni) flood plain lakes [ 20 ], Outer Carpathians in Poland [ 21 ] is lower or at least equal to the values of this research. If the value of internal or external radiation hazard index is found to be less than unity, then there is no potential internal or external radiation hazard.…”

Section: Introductionmentioning

confidence: 68%

226Ra, 232Th and 40K contents in water samples in part of central deserts in Iran and their potential radiological risk to human population

Ehsanpour

Abdi

Mostajaboddavati

et al. 2014

J Environ Health Sci Engineer

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BackgroundThe radiological quality of 226Ra, 232Th and 40K in some samples of water resources collected in Anarak-Khour a desertic area, Iran has been measured by direct gamma ray spectroscopy using high purity germanium detector in this paper.ResultThe concentration ranged from ≤0.5 to 9701 mBq/L for 226Ra; ≤0.2 to 28215 mBq/L for 232Th and < MDA to 10332 mBq/L for 40K. The radium equivalent activity was well below the defined limit of 370Bq/L. The calculated external hazard indices were found to be less than 1 which shows a low dose.ConclusionThese results can be contributed to the database of this area because it may be used as disposal sites of nuclear waste in future.

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Determination of natural radioactive elements in Abo Zaabal, Egypt by means of gamma spectroscopy

Cited by 39 publications

References 16 publications

Evaluation of radiological risks due to natural radioactivity around Lynas Advanced Material Plant environment, Kuantan, Pahang, Malaysia

Evaluation of radiological risks due to natural radioactivity around Lynas Advanced Material Plant environment, Kuantan, Pahang, Malaysia

Evaluation of Rock Radiation Hazards for Construction Applications in Parts of Southwestern Nigeria

226Ra, 232Th and 40K contents in water samples in part of central deserts in Iran and their potential radiological risk to human population

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