Radiological assessment and geochemical characterization of the sediments of Awba Dam, University of Ibadan, Nigeria

Jibiri, N. N.; Akomolafe, Idowu Richard

doi:10.4103/0972-0464.199972

Cited by 7 publications

(5 citation statements)

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“…About 0.2 kg of each homogeneous sample was weighed into a cylindrical container of negligible mass and correctly labeled with indelible ink for easy identification. 4 , 32 The cylindrical containers used for the package were washed with borehole water (5 times) and rinsed thoroughly with distilled water. The packaged samples were allowed in the laboratory for at least 4 weeks so natural radionuclides and their progenies could attain secular radioactive equilibrium.…”

Section: Methodsmentioning

confidence: 99%

“…The packaged samples were allowed in the laboratory for at least 4 weeks so natural radionuclides and their progenies could attain secular radioactive equilibrium. 4 , 8 , 32 Afterwards, the samples were gathered in a big plastic carrier and transported to the Radiation and Health Physics Research Laboratory, Department of Physics, University of Ibadan, Nigeria, for gamma-ray spectrometry analysis.…”

Section: Methodsmentioning

confidence: 99%

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Assessment of Radiation Hazard Indices Due to Natural Radionuclides in Soil Samples from Imo State University, Owerri, Nigeria

Eke,

Akomolafe,

Ukewuihe

et al. 2024

Environ�Health�Insights

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A total of 30 soil samples from different sampling points at Imo State University (IMSU), Owerri, Nigeria were collected for the study. The activity concentrations of naturally occurring radionuclides (238U, 232Th, and 40K) were measured in the samples by gamma-ray spectrometry using NaI (TI) detector. Absorbed dose rate (D), annual effective dose (AED), radium equivalent activity (Raeq), and radiological hazard index parameters (activity utilization index [AUI], external hazard index [Hex], internal hazard index [Hin], and excess lifetime cancer risk [ELCR]) due to the naturally occurring radionuclides were determined. The mean activity of 238U, 232Th, and 40K were found to be 20.32 ± 3.22, 22.55 ± 0.68, and 91.63 ± 1.54 Bqkg−1 which were lower than the world average reference mean values of 33, 45, and 420 Bqkg−1for 238U, 232Th, and 40K, respectively, as reported by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). The average value of D, Raeq, AUI, ELCR, Hex, and Hin in the soil samples was 26.86 ± 1.97 nGyh−1, 59.62 ± 4.14 Bqkg−1, 0.42 ± 0.03, 0.14 ± 0.01 (×10−3), 0.16 ± 0.01, and 0.22 ± 0.02, respectively. The annual effective dose to the general public was 33.07 ± 2.40 μSvy−1. This value lies well below the average worldwide reference value of 0.7 mSvy−1, as reported by UNSCEAR. Soil samples from IMSU pose no significant radiological health hazards to the university community.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Assessment of Radiation Hazard Indices Due to Natural Radionuclides in Soil Samples from Imo State University, Owerri, Nigeria

Eke,

Akomolafe,

Ukewuihe

et al. 2024

Environ�Health�Insights

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“…The sealed samples were stored in a dried place and left for a minimum period of 28 days to attain secular radioactive equilibrium between 226 Ra and its short-lived daughter products. 5 …”

Section: Methodsmentioning

confidence: 99%

“…Based on the stored spectra, each sealed sample was placed on top of the detector and counted for the same amount of time as the reference sample. From the net area, the activity concentrations in the samples were obtained using equation (1) 1 , 5 , 7 …”

Section: Methodsmentioning

confidence: 99%

Radiological Dose Assessment due to the Presence of Norms in the Top Soil of the Imo State Polytechnic, Imo State Nigeria

Eke

Amakom

Ukewuihe

et al. 2022

Environ�Health�Insights

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A study on the radiological dose assessment due to the presence of natural radionuclides in the top soil of Imo state Polytechnic was carried out using a gamma spectroscopic method. From the activity concentrations of natural radionuclides in the topsoil, the absorbed dose rate and annual effects of doses were established. The activity concentrations ranged from 59.20 to 203.78 Bqkg−1, 8.74 to 45.78 Bqkg−1, and 12.73 to 44.01 Bqkg−1 for the radionuclides 40K, 226Ra, and 232Th respectively. The absorbed dose rates ranged from 16.70 to 52.10 nGyh−1 while the indoor and outdoor annual effective doses ranged from 20.48 to 63.89 µSvy−1 and 81.94 to 255.58 µSvy−1 respectively. From the results, it shows that the radiation from natural radionuclides in the top soil posed no radiological threat to the population of the institution.

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“…Despite the wide use of these rocks in building construction, study of the radioactivity levels of different types are not taken seriously; the building engineers and contractors are usually concerned with strength of rocks without due consideration of radiation emission from different types of the rocks. The radiological risk to individual in buildings constructed with crushed rocks may be high depending on the sources and the levels of natural radionuclides [2][3][4] have studied the radioactivity in rocks and soil matrices from parts of Ogun State, particularly Abeokuta identified as high background radiation area. 5) The aim of the present study is to measure the activity concentrations of 40…”

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confidence: 99%

Radiological and Geochemical Assessment of Different Rock Types from Ogun State in Southwestern Nigeria

Olayinka,

Kunle

2023

J Environ Health Sci

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Exposure of the general public, patients, and radiation workers to ionizing radiation must be limited to minimize the risk of harmful biological effects. In 1954, the National Committee on the Radiation Protection (NCRP) proposed a concept that radiation exposure should be kept as low as reasonably achievable (ALARA) concept. This concept is accepted by all regulatory agencies including International Commission on Radiological Protection (ICRP), the World Health Organization (WHO), and the European Commission (EC). When human body is exposed to ionizing radiation, it damages living systems by ionizing atoms composing of the molecular structures, causing abnormalities in the functioning of the living cell and

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Radiological assessment and geochemical characterization of the sediments of Awba Dam, University of Ibadan, Nigeria

Cited by 7 publications

References 0 publications

Assessment of Radiation Hazard Indices Due to Natural Radionuclides in Soil Samples from Imo State University, Owerri, Nigeria

Assessment of Radiation Hazard Indices Due to Natural Radionuclides in Soil Samples from Imo State University, Owerri, Nigeria

Radiological Dose Assessment due to the Presence of Norms in the Top Soil of the Imo State Polytechnic, Imo State Nigeria

Radiological and Geochemical Assessment of Different Rock Types from Ogun State in Southwestern Nigeria

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