Assessment of annual effective dose due to radon concentrations in deep and shallow wells within Ekiti State, Nigeria

Isinkaye, Matthew Omoniyi; Ajiboye, Yinka

doi:10.1051/radiopro/2017014

Cited by 13 publications

(6 citation statements)

References 8 publications

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“…Table 3 shows the comparison of the results of this investigation with those of similar studies from different parts of ) is higher than that reported by Kalip et al [24] for Kaduna (1.8 Bq l −1 ). Additionally, average value obtained for the boreholes within the community (14.3 Bq l −1 ) is about 54% lower than the one reported by Isinkaye and Ajiboye [28] for Ekiti State. This may be due to variations in local geology of the respective sampling areas and depth of sampling.…”

Section: Radon Concentrationcontrasting

confidence: 60%

Annual Effective Dose and Excess Lifetime Cancer Risk due to Ingestion and Inhalation of Radon in Groundwater of Bosso Community Minna, North-Central Nigeria

Kolo

Olarinoye

Salihu

et al. 2023

J. Nig. Soc. Phys. Sci.

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Radon in potable water has become an issue of public health concern, especially when consumed or used directly from source for domestic purposes without any pre-treatment. In this study, 222Rn concentration in 22 water samples collected from 2 groundwater sources (open wells, 12 samples and boreholes, 10 samples) in Bosso town, North central Nigeria were measured using Durridge RAD-7 radon detector with RAD-H2O accessories. 222Rn concentrations in open wells varied from 2.1±0.7 to 27.9±2.5 Bq L-1 with a mean of 10.2±1.5 Bq L-1, while that in boreholes ranged from 2.8±1.1 to 39.2±1.5 Bq L-1 with a mean value of 14.3±1.7 Bq L-1. These values are lower than the 100 Bq L-1 upper limit proposed by the European Union Commission, above which any practical intervention may be necessary. Mean annual committed effective dose to adults, children and infants from ingestion of water were 74.64, 71.58 and 53.17 \muSv y-1 respectively for the open wells and 104.24, 99.96 and 74.26 \muSv y-1 respectively for borehole water samples. Mean whole body dose due to ingestion and inhalation of waterborne radon from open wells and boreholes are 27.56 and 38.48 \muSv y-1 respectively, which are below the reference level of 0.1 mSv y-1 for potable water recommended by the World Health Organization for public safety. The excess lifetime cancer risk were 0.10 × 10-3 for the open wells and 0.13 × 10-3 for the boreholes, which are lower than the world safety limit 0.29 × 10-3. Water from the two groundwater sources investigated is therefore fit for consumption and other domestic usage from the point of view of radiation protection.

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Section: Radon Concentrationcontrasting

confidence: 60%

Annual Effective Dose and Excess Lifetime Cancer Risk due to Ingestion and Inhalation of Radon in Groundwater of Bosso Community Minna, North-Central Nigeria

Kolo

Olarinoye

Salihu

et al. 2023

J. Nig. Soc. Phys. Sci.

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“…The detector has a sensitivity ranging from 10 pCi L −1 to 400,000 pCi L −1 . All the measurements were done following the ISO 13,164 protocol of test method using two-phase liquid scintillation counting for 222 Ra in water (Isinkaye and Ajiboye 2017).…”

Section: Sampling and Experimental Analysismentioning

confidence: 99%

“…It is noted as the foremost cause of lung cancer among non-smokers. Radon studies have been the subject of many regional, national and international research efforts due to its activity, natural occurrence and the risks to public health (Akawwi 2014;Isinkaye and Ajiboye 2017;Oni and Adagunodo 2019;Ogundare and Adekoya 2015;Kalip et al 2018;El-Araby et al 2019;Duggal et al 2020). Water is an essential item to human life and a very significant parameter for environmental, geological and radiological studies.…”

Section: Introductionmentioning

confidence: 99%

Annual effective dose from 222Rn in groundwater of a Nigeria University campus area

et al. 2021

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Radon, the heaviest among the noble gases in the periodic table of element is a radioactive nuclide that is naturally available in rocks, soil and water. It has become the subject of many research efforts in recent years due to its leading role in causing cancer. In this study, a total of 68 groundwater samples were collected and assayed using alpha spectrometry with RAD7 radon detector with RAD-H2O accessories manufactured by Durridge CO (USA). The 222Rn concentration measured were in the range of 0.6–36.2 Bq L−1 with an average of 13.33 Bq L−1, 7.0–41.5 Bq L−1 with mean value 23.3 Bq L−1 and 0.6–27.4 Bq L−1 with an average value of 7.4 Bq L−1 for hand dug wells (HDW), hand pumped boreholes (HPB) and motorized boreholes (MBH), respectively. About 54, 86 and 15% of samples from the HDW, HPB and MBH, respectively, exceeded the parametric reference level of 11.1 Bq L−1 suggested by United State of America Environmental Protection Agency but lower than the permissible limit of 100 Bq L−1 by World Health Organization (WHO) and European Union. The average annual effective doses resulting from inhalation and ingestion of radon in water obtained for the three groundwater sources are less than recommended limits by WHO and ICRP. The data obtained from this study are comparable with similar studies conducted in Nigeria and other parts of the world as reported in literature. Continuous radon monitoring in drinking water and indoor environment is however recommended for the study area.

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“…At the collection points, 100 samples each of soil and groundwater were collected for gamma spectrometry in order to determine the activity concentration of 226 Ra. Continuous radon measurements were performed on the groundwater samples to determine 222 Rn activity concentration using RAD7-H 2 O radon detection system [14,15]. Around the same collection points, in situ measurements of 222 Rn in soil gas were carried out.…”

Section: Collection and Preparation Of Samplesmentioning

confidence: 99%

Correlations of 226Ra and 222Rn activity concentrations in surface soil and groundwater of basement complex geological area of southwest Nigeria

Isinkaye

Ajiboye

2020

SN Appl. Sci.

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The quantitative evaluations of naturally occurring radioisotopes in environmental media have provided significant information on the geological and radiological characteristics of different environments around the world. In furtherance to a preliminary study within southwest Nigeria set out to determine the distribution of 222 Rn in groundwater and soil gas, the present study employed a well-shielded NaI(Tl) and RAD 7 detectors to determine activity concentrations of 226 Ra and 222 Rn in the media. Samples were collected from 100 sampling sites spatially distributed within the study area. Multivariate statistics were employed to extract the relationships between the activity concentrations of 226 Ra and 222 Rn in order to ascertain their origin and behavior in the basement complex geological area of southwest Nigeria. The mean activity concentration of 226 Ra falls below the world average value of 35 Bq kg −1 in soil as reported by UNSCEAR, and 222 Rn mean activity concentration is lower than 100 Bq l −1 recommended by WHO and European Commission as the criterion level in utility water for the members of the public. It can therefore be concluded that there is no significant radiological risks to the environment and human health due the presence of the measured radionuclides in soil and groundwater.

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Assessment of annual effective dose due to radon concentrations in deep and shallow wells within Ekiti State, Nigeria

Cited by 13 publications

References 8 publications

Annual Effective Dose and Excess Lifetime Cancer Risk due to Ingestion and Inhalation of Radon in Groundwater of Bosso Community Minna, North-Central Nigeria

Annual Effective Dose and Excess Lifetime Cancer Risk due to Ingestion and Inhalation of Radon in Groundwater of Bosso Community Minna, North-Central Nigeria

Annual effective dose from 222Rn in groundwater of a Nigeria University campus area

Correlations of 226Ra and 222Rn activity concentrations in surface soil and groundwater of basement complex geological area of southwest Nigeria

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