Spatial distribution and lifetime cancer risk due to naturally occurring radionuclides in soils around tar-sand deposit area of Ogun State, southwest Nigeria

Gbadamosi, Muideen Remilekun; Afolabi, T. Adeniyi; Banjoko, Oluwakemi Oluwabunmi; Ogunneye, A.L.; Abudu, K.A.; Ogunbanjo, O.O.; Jegede, D.O.

doi:10.1016/j.chemosphere.2017.11.132

Cited by 21 publications

(26 citation statements)

References 25 publications

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“…In the activity calculations of 238 U ( 226 Ra), 232 Th (Ac228), and 40 K radionuclides, the energy peaks of 214 Bi-352 keV, 228 Ac-911 keV, and 40 K-1460 keV were used, respectively, with the gamma spectroscopy system.…”

Section: Gamma Spectrometric Analyses Of the Samples And Dose Calculationsmentioning

confidence: 99%

“…The radiation exposure values of 226 Ra, 232 Th, and 40 K and in building materials are not the same; therefore, they are defined using radium equivalent activity. Ra eq was measured in Bq/kg to provide uniformity concerning the radiation exposure values reported in the literature [26][27][28].…”

Section: Radium Equivalent Activity Index (Ra Eq )mentioning

confidence: 99%

“…Ra eq was measured in Bq/kg to provide uniformity concerning the radiation exposure values reported in the literature [26][27][28]. Particularly, these calculations were made to compare the specific activities of materials containing different amounts of 226 Ra, 232 Th, and 40 K radionuclides. The use of construction materials with a radium equivalent activity value of 370 Bq/kg causes the people living in the building to be exposed to a dose of 1.5 mSv per year [29].…”

Section: Radium Equivalent Activity Index (Ra Eq )mentioning

confidence: 99%

“…The use of construction materials with a radium equivalent activity value of 370 Bq/kg causes the people living in the building to be exposed to a dose of 1.5 mSv per year [29]. It is used to compare the activity concentration of materials containing different amounts of 226 Ra, 40 K, and 232 Th radionuclides. The radium equivalent activity index was calculated as follows [29][30][31].…”

Section: Radium Equivalent Activity Index (Ra Eq )mentioning

confidence: 99%

“…The specific activities of 226 Ra, 232 Th, and 40 K were identified in marble samples used as building materials by gamma-ray spectrometry using a high-purity germanium HPGe co-axial detector. Radium equivalent activity index (Ra eq ), absorbed gamma dose rate (D), alpha index (Iα), gamma index (Iγ), external gamma radiation (Hex), internal alpha radiation (Hin), annual effective dose equivalent (AEDE), annual gonadal dose equivalent (AGDE), excess lifetime cancer risk (ELCR), and activity utilization index (AUI) were calculated to investigate their radiological effects and were compared with the limit values proposed in the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) report and international studies.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Effect of Hydrothermal Waters on Radionuclide Activity Concentrations in Natural Marble with Multivariate Statistical Analysis

et al. 2020

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The study aims to investigate the effects of Burdur (Turkey) marble on human health by interpreting their radioactivity concentration (226Ra, 232Th, and 40K), radiological hazard parameters, chemical concentration, physical properties, and all data related to these features by using multivariate statistical methods. Chemical and radionuclide analyses were performed on marble samples. The data were interpreted by statistical analysis. According to the regression model, an increase in the concentration of vanadium carried to the environment by hydrothermal waters causes a 4.452-fold higher concentration of 226Ra. The R2 value of the model was 0.64 and it was statistically significant. The maximum concentration of 226Ra in Isparta Davraz Beige sample (M7) exceeded the values of some countries’ standards. Except for M7, the analyzed sorts of marble can be used safely in dwellings and public buildings.

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Section: Gamma Spectrometric Analyses Of the Samples And Dose Calculationsmentioning

confidence: 99%

Section: Radium Equivalent Activity Index (Ra Eq )mentioning

confidence: 99%

Section: Radium Equivalent Activity Index (Ra Eq )mentioning

confidence: 99%

Section: Radium Equivalent Activity Index (Ra Eq )mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of the Effect of Hydrothermal Waters on Radionuclide Activity Concentrations in Natural Marble with Multivariate Statistical Analysis

et al. 2020

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Radiological and Health Risk Assessment of Naturally Occurring Radioisotopes and Toxic Metals in Sediments of Some Selected Beaches in Lagos State, Southwest Nigeria

Gbadamosi,

Abayomi,

Oluwabunmi

et al. 2024

Advances in Science, Technology &Amp; Innovation

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Occurrence and remediation of naturally occurring radioactive materials in Nigeria: a review

et al. 2021

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Radioactive compounds are released in the environment by several anthropogenic activities, however, studies reveal that naturally occurring radioactive materials are responsible for over 80% of human exposure to ionizing radiation. Reports suggest that there are severe health risks associated with exposure to elevated concentrations of radioactive materials, such as potassium ( 40 K), uranium ( 238 U and 235 U), and thorium ( 232 Th). The rarity of comprehensive reviews addressing the occurrence, risk assessment, and potential remediation strategies of radioactive pollution in Nigerian environments propelled the collection of data over the last decade. Concentration as high as 2.42 ± 0.28 Bq/L has been reported in rivers in Nigeria, much higher than the radionuclide permissible level of 1 Bq/L. There are emerging concerns as activity concentrations of gamma-emitting radioactive materials found in soils are higher than worldwide average crustal values based on several reports. In many cases, the absorbed air dose rates were also greater (i.e., 86.44 nGy hr -1 ) than acceptable limits (60 nGy hr -1 ) except for few study areas. The level of radionuclides reported is indicative of the type of parent rocks and mineral composition of the studied area. Advances in remediation technologies suggest that electroremediation, bioremediation, and adsorption are the most efficient remedial approach for decontamination of radiochemical polluted sites. There is a need to explore an integrated synergistic approach for sustainable remediation of heavily polluted sites and in the light of environmental protection, attention must be given to areas with high levels of radioactive pollution. This review seeks to bridge information gaps towards ensuring that radioactive materials do not destroy our ecosystem.

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Spatial distribution and lifetime cancer risk due to naturally occurring radionuclides in soils around tar-sand deposit area of Ogun State, southwest Nigeria

Cited by 21 publications

References 25 publications

Investigation of the Effect of Hydrothermal Waters on Radionuclide Activity Concentrations in Natural Marble with Multivariate Statistical Analysis

Investigation of the Effect of Hydrothermal Waters on Radionuclide Activity Concentrations in Natural Marble with Multivariate Statistical Analysis

Radiological and Health Risk Assessment of Naturally Occurring Radioisotopes and Toxic Metals in Sediments of Some Selected Beaches in Lagos State, Southwest Nigeria

Occurrence and remediation of naturally occurring radioactive materials in Nigeria: a review

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