Measurement of Radon Concentration in Selected Houses in Ibadan, Nigeria

Usikalu, M.R.; Olatinwo, V; Akpochafor, Michael Onoriode; Aweda, Moses Adebayo; Giannini, G.; Massimo, V

doi:10.1088/1742-6596/852/1/012028

Cited by 13 publications

(10 citation statements)

References 8 publications

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“…The office space at the center of the basement structure has the same crest and trough pattern but with radon concentration far higher than the average world recommended limit of 40 Bqm −3 as shown in Figure 8. The result of the mean concentration obtained in this study is comparable with other studies conducted within and outside Nigeria (Bangotra et al, 2019;Nsiah-Akoto et al, 2019;Usikalu, Olatinwo et al, 2017;Usikalu, Onumejor et al, 2018). The radon concentration measured was used to estimate the annual effective dose, the mean annual effective dose calculated are 0.377, 0.271 and 3.644 for glass, brick and basement houses, respectively.…”

Section: Resultssupporting

confidence: 91%

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Monitoring of radon concentration for different building types in Covenant University, Nigeria

et al. 2020

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Radon monitoring is essential in determining the actual level of exposure in buildings. Of all the reviewed works on indoor radon level, little to none was done on comparative radon concentration study of different building structures in the study area. A comparative study of the indoor radon concentration of different building types; such as glass house, bricks and basement house structures were done to evaluate sustainable radon level using radon detector (RAD7) machine. The mean radon concentration for glass house, brick house and basement house are 14.96, 10.74 and 144.61 Bqm −3 , respectively. Glass house radon concentration range is from 11.03 to 17.46 Bqm −3 . The radon concentration measured ranged from 6.62 to 20.85 Bqm −3 for bricks house structure. Basement structure radon concentration ranges from 15.75 to 614.52 Bqm −3 . It was observed from the study that the mean radon concentration measured from the basement structure was above the recommended limit by a factor of 4. The estimated annual effective doses are 0.377, 0.271 and 3.644 mSvy −1 for glass, brick and basement houses, respectively. The study concluded that possible health risk is associated to basement structure that has limited ventilation than glass and bricks house with easy access to natural ventilation outlet. It is therefore recommended that adequate ventilation be put in place in basement house.

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Section: Resultssupporting

confidence: 91%

“…CGF has the highest value of 20.85 Bqm −3 for bricks house. This is not surprising as the location is on the ground floor and radon emanate from the earth crust (Banjanac et al, 2006;Usikalu, Olatinwo et al, 2017). LT4 recorded the highest value of 614.52 Bqm −3 for basement structure.…”

Section: Resultsmentioning

confidence: 83%

Monitoring of radon concentration for different building types in Covenant University, Nigeria

et al. 2020

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“…Concerted effort should also be made by the health workers to enlighten the residence on the potential harmful effect of radon to human health. Another study was conducted by Usikalu, et al [9] to investigate the radon concentration in selected houses in three local government areas of Ibadan. The indoor radon was measured in both mud and brick houses.…”

Section: Summary Of the Resultsmentioning

confidence: 99%

An Overview of Radon Concentration in Southwestern Nigeria

MK¹

2022

PSBJ

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Without a doubt, radon is a harmful gas that is the greatest cause of lung cancer in nonsmokers and the second biggest cause of lung cancer in smokers. However, due to a lack of knowledge and limited research, this poisonous gas has received little attention in the southwestern area of Nigeria. As a result, a few studies have been compiled with the goal of policymakers using it as a baseline for radon monitoring in the region, which may also be used as a reference for future studies.

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“…for indoor and 0.54 nGy/h to 1.72 nGy/h for outdoor while the annual effective doses in the study area are 0.01 mSv/y. In Ogwashi-Uku, there is no documented literature on the monitoring or measurements of background radiation dose levels which necessitated the need for this study as continuous exposure to background radiation dose levels even at low doses could increase the chances of cancer (Chad-Umoren et al, 2007;Usikalu et al, 2017).…”

Section: Ijaboret Al 2022 Ojps3(2) | 36mentioning

confidence: 99%

“…This radioactive isotope has different decay products and different half-lives. The persistent accumulation of decomposed 222 Rn with a half-life of 3.82 days and the effects of its products in the human lung are carcinogenic as revealed in the literature that there is a strong relationship between lung cancer and radon exposure even at low doses (Chad-Umoren et al, 2007;Usikalu et al, 2017). Background radiation also comes from man's activities such as oil exploration, mining, nuclear weapons testing, disposal of radioactive waste, and use of radioisotopes in radiation therapy, among others (Al-Azmi, 2014;James et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Indoor and Outdoor Radiation Dose Levels in Delta State Polytechnic, Ogwashi-Uku, Delta State, Nigeria

Ijabor

Nwabuoku²,

Ozakpor

et al. 2022

OJPS

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This study assessed the indoor and outdoor radiation dose levels of twelve (12) laboratories of Delta State Polytechnic, Ogwashi-Uku using a handheld inspector survey meter and estimation revealed that the average BIR, average annual equivalent dose rate (EDR), average annual absorbed dose rate (ADR), average annual effective dose equivalent (AEDE), average excess lifetime cancer risk (ELCR) is 0.0116 mR/hr, 0.9733 mSv/yr, 100.69 nGy/hr, 0.4940 mSv/yr and 1.755. Dose to organs showed that the testes received the highest dose, while the liver received the lowest dose indoors and outdoors respectively. In general, indoor and outdoor BIR, ED, AD, and AEDE values are less than the recommended limit of unity (1 mSv/yr) for public exposure (ICRP). ELCR for indoor and outdoor is above the world permissible limit of 0.29×10-3. The calculated ELCR in the study area is 1:29719 (about 33 in 1 million) indoors and 1:115735 (9 in 1 million) outdoors. Although the average value for ELCR in this study is high further analysis and studies need to be carried out to ascertain the risk of staff and students to cancer.

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Measurement of Radon Concentration in Selected Houses in Ibadan, Nigeria

Cited by 13 publications

References 8 publications

Monitoring of radon concentration for different building types in Covenant University, Nigeria

Monitoring of radon concentration for different building types in Covenant University, Nigeria

An Overview of Radon Concentration in Southwestern Nigeria

Assessment of Indoor and Outdoor Radiation Dose Levels in Delta State Polytechnic, Ogwashi-Uku, Delta State, Nigeria

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