Radiological health assessment of natural radioactivity in the vicinity of Obajana cement factory, North Central Nigeria

Isinkaye, Matthew Omoniyi; Jibiri, N. N.; Olomide, Adebowale A

doi:10.4103/0971-6203.152256

Cited by 20 publications

(19 citation statements)

References 29 publications

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“…The levels of 238 U, 232 Th , their respective progenies and the non-series 40 K have been studied in different building materials (both raw and finished products) from different parts of the country [[6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22]], but none has been carried out in Kwara State despite the increasing level of granite mining and usage in this part of the country. Also, data from University of Ilorin Teaching Hospital (UITH) shows that 74 different cancers of 2246 (891 male and 1355 female) cancer patients within the age of 1–105 were recorded at the University of Ilorin Teaching Hospital (UITH) cancer registry between the period of 2007 and 2016 [23].…”

Section: Methods Detailsmentioning

confidence: 99%

Natural radionuclides and radiological risk assessment of granite mining field in Asa, North-central Nigeria

et al. 2019

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Section: Methods Detailsmentioning

confidence: 99%

Natural radionuclides and radiological risk assessment of granite mining field in Asa, North-central Nigeria

et al. 2019

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“…To determine the activity concentration of both U and Th via their strong gamma-emitting decay products ( 226 Ra, 228 Ra, and 228 Th) and also that of 40 K, the following equation [21] was used:…”

Section: Activity Concentration Determinationmentioning

confidence: 99%

“…232 Th was determined from the average value of 228 Ra and 228 Th activity concentration. The 40 K activity was determined using its characteristic gamma emission energy of 1461 keV [21]. The gamma yield value for each radionuclide was obtained from NuDat 2.7 (National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY, USA) [22].…”

Section: Activity Concentration Determinationmentioning

confidence: 99%

Assessment of the Mode of Occurrence and Radiological Impact of Radionuclides in Nigerian Coal and Resultant Post-Combustion Coal Ash Using Scanning Electron Microscopy and Gamma-Ray Spectroscopy

et al. 2020

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Natural radionuclide concentrations in coal and coal ash can occur at levels sufficient to raise potential health and environmental concerns when (re)suspended or disposed into the environment. To evaluate such concerns, this study characterized coal and simulant coal ash samples obtained from two Nigerian coal mines (Okaba and Omelewu) using high resolution gamma spectroscopy combined with scanning electron microscopy and energy dispersive spectroscopy. Discrete uraninite particles were observed dispersed within the coal ash samples, alongside U and Th containing mineral grains (monazite and zircon) with monazite the most abundant radioactive mineral particles. The pitted and cracked surface morphologies of these radioactive particles (with sizes between 10 μm and 80 μm) indicate their susceptibility for disintegration into more harmful and readily inhalable PM2.5 aerosol particles, with the potential to deliver a localized dose and cause chronic respiratory diseases. The results of activity concentrations and radiological hazard indices for the coal ash samples from both mines were between three and five times higher than world average in soil, which imply that these coal ash materials should be suitably contained in slurry ponds to prevent hazards due to increased risk of prolonged indoor exposure to gamma radiation, radon gas, and inhalation of liberated radioactive particles.

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“…Research on environmental natural radiations have received universal awareness and lead to widespread study in numerous countries like Spain, Turkey, Nigeria, Malaysia, Iran, and Botswana. The absorbed dose rate in air depends principally on the radionuclide content in the soil, as the largest part of the gamma radiation from the terrestrial and the extra-terrestrial [4,5] radiations.…”

Section: Introductionmentioning

confidence: 99%

Excess lifetime cancer risk due to natural background radiations of Soil in North Kashmir

Shah

Thoker²,

Ahmad³

et al. 2019

JMS

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Background: Long term exposure to environmental radioactivity and the associated external exposure due to gamma emitting radionuclides have serious health effects particularly on cancer risk. Of course, the soil radioactivity depends on the underlying rocks and consequently, the soil type and the geographic conditions. Objectives: Evaluation of excess life time cancer risk due to natural radioactivity of the soil of surface layer of the Nichahoma lignite belt and the soil of villages surrounding the lignite belt. 226 232 40 Methods: In this particular study, stirring radionuclides of the Ra , Th , and K present in the soil samples of the lignite belt and soil of the villages surrounding the lignite belt were measured by using a low-background Pb-shielded gamma spectroscopic counting assembly utilizing NaI(Tl) detector for the measurement and to evaluation the radiation hazard indices and excess life time cancer risk. -3 -3 -3 -3 Results: The excess life time cancer ranged from 0.65×10 to 0.71× 10 (average ~0.68×10 ) for the soil of the lignite belt and from 1.15×10 to -3 -3 1.34×10 (average ~1.25×10 ) for the soil of the villages surrounding the belt. The correlation analyses, performed between the radium equivalent activity and excess life time cancer risk for the two types of the sample, showed very strong and linear dependence of excess life time cancer risk on radium equivalent activity and measured dose rate for the soil of the lignite belt compared to the soil of the villages surrounding the lignite belt. Conclusion: Compared to world average, the average value of computed excess life time cancer risk for both the categories of investigated samples in the study was found to be higher than 0.29. JMS 2018: 21 (2):101-108 Keyword: Excess life time cancer risk, measured dose rate, radium equivalent activity, correlation analysis, lignite belt.

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Radiological health assessment of natural radioactivity in the vicinity of Obajana cement factory, North Central Nigeria

Cited by 20 publications

References 29 publications

Natural radionuclides and radiological risk assessment of granite mining field in Asa, North-central Nigeria

Natural radionuclides and radiological risk assessment of granite mining field in Asa, North-central Nigeria

Assessment of the Mode of Occurrence and Radiological Impact of Radionuclides in Nigerian Coal and Resultant Post-Combustion Coal Ash Using Scanning Electron Microscopy and Gamma-Ray Spectroscopy

Excess lifetime cancer risk due to natural background radiations of Soil in North Kashmir

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