Estimation of Indoor Radon and Its Progeny in Dwellings of Akoko Region, Ondo State, Southwestern Nigeria

M, Asere A.; Ajayi, I. R.

doi:10.9734/jsrr/2017/32246

Cited by 8 publications

(9 citation statements)

References 1 publication

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“…This result differs from that of Garba et al (2013) [22] , who discovered that the mean radon concentration was 12.29 Bq/L. The results of Adeola and Isaac (2017) [23] , who discovered that the mean radon concentration was 35.54 Bq/L, are also out of sync.…”

Section: Discussioncontrasting

confidence: 77%

“…In accordance with the findings of their study, the 222 Rn content in borehole sources is higher than that in well water sources, and both were above the USEPA-set MCL of 11.1 Bq/L. In another research, the estimation of indoor radon and its progeny in dwellings of Akoko Area, Ondo State, Southern Nigeria, was undertaken by Adeola and Isaac in 2017 [23] . Accustar alpha-track long-term passive test devices with CR-39 solid-state nuclear track detector foil were used for the test.…”

Section: Introductionsupporting

confidence: 76%

“…where T is the amount of time (365 days) during which water is consumed, C is the concentration of 222 Rn (Bq/L), G is the amount of water consumed each day (4 L/d), E is the annual effective dose (mSv/y), D is the concentration of 222 Rn that results from converting Sv to mSv (7 × 10 -8 Sv/Bq), and 1000 is the conversion coefficient. c. Annual effective dose by inhalation Adeola and Isaac (2017) and USEPA (2019) [23,25] used the following equation to get the annual effective dose of 222 Rn when inhaled:…”

Section: Approach To Data Analysismentioning

confidence: 99%

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Toxicity of Radon-222 in Groundwater across Keana in Nasarawa, Nigeria

Bako

Rilwan²,

Ibrahim

et al. 2023

adv. in geol. and geotech. eng. res.

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The most common supply of freshwater for drinking, irrigation, and other domestic uses is groundwater; however, because of increased radon concentrations brought on by mining activities, its quality is still a severe concern. Using a liquid scintillation detector, this study investigated the radon content, its related toxicity, and its risk to human health in the groundwater of the Keana in Nasarawa, Nigeria. Ten (10) borehole samples and five (5) well samples totaling fifteen (15) groundwater samples were taken. The results showed that the average radon concentration in water samples from Keana was 2.25 Bq/L. The mean annual effective dosage (ingestion) for adults and children in Keana was 0.016 mSv/y and 0.027 mSv/y, respectively. In Keana, the additional lifetime cancer risk per adult was 5.65 × 10–5, and per child, it was 8.79 × 10–5. The study’s radon concentration was lower than the benchmark of 11.1 Bq/L established in 1991 by the Nigerian Standard Organization and the US Environmental Protection Agency. The results of this study indicate that the level of radon is safe; as a result, people can continue farming and other activities. To reduce the risk of cancer, however, more research could be done in the area. Further research should be done by looking at additional sources in the study area in order to cover the entire zone. Further investigation should be carried out both during the dry and wet seasons because radon concentrations in groundwater alter over time due to dilution by recharge from rainfall.

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Section: Discussioncontrasting

confidence: 77%

Section: Introductionsupporting

confidence: 76%

Section: Approach To Data Analysismentioning

confidence: 99%

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Toxicity of Radon-222 in Groundwater across Keana in Nasarawa, Nigeria

Bako

Rilwan²,

Ibrahim

et al. 2023

adv. in geol. and geotech. eng. res.

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“…The building had no ventilation at night and all the doors and windows were locked during the day, preventing radon gas from escaping into the space outside. 222Rn is major risk factor for lung cancer after smoking according to Asere, et al [36]. This makes determining the concentration of radon activity inside of dwellings an important health concern.…”

Section: Radon In Buildingsmentioning

confidence: 99%

Untitled

2023

BJSTR

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Radon is a colorless, odorless indoor and outdoor air pollutant that is produced by uranium disintegrations (decay). It represents at least half of the typical population's ionizing radiation exposure due to man-made and natural origin. Attention was paid to radon due to its harmful radiological effect on public health. Population have for all time been exposed to radon and its progeny since they are naturally occurred and enter homes through a variety of pathways such as buildings (such as ceiling, walls & floor), Water, Soils and rocks. Radon detection is rarely important because it is not known to exist unless there is a wellbeing distress. The quantity of radon present within water, rock-soils and buildings varies on a number of variables. According to the retrieved studies, indoor radon levels are generally higher during the cold and wet seasons than they are during the summer. This systematic review focuses on the radiological implications arise from high exposure to radon and the elevated probability of happening of wellbeing harms in exposed residents of Nigeria. Previous research on radon concentrations in Nigeria received the most attention. Only a few studies provided evidence supporting the link between outdoor and indoor radon concentrations and radiological implications analyses, such as the evaluation of cancer risk from radon inhalation and ingestion yet within areas of extremely high concentrations. On the other hand, a few studies also revealed a tendency for adverse effects on public health to occur still within circumstances where indoor radon concentrations be lesser. According to data derived from published articles by Nigerian researchers, radon exposure caused some little concern over the association between radon concentration and determinations of radiological impact. Therefore, it is crucial to evaluate the radiological effects of radon, comprehend the dangers of exposure, and determine how inhabitants in Nigeria who are exposed to it may suffer health effects. The best course of action to prevent the harmful consequences of radon gas in an indoor or outdoor environment is to stop its production. Preethi and Jeyanthi offered some methods for radon mitigation in buildings. Depressurization, freshening, and sealing fall under these categories, with related percentage effectiveness ranges of 50-80%, 80-95%, and 50-70%.

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“…However according to Asere et. al (2017), [10] they analyzed the concentration of 3-granitic single family houses, in Barcelos, Portugal. Measurements were performed during the summer and autumn season.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Indoor Radon Concentration in Administrative offices and Estimation of the Annual Effective Dose

Ogungbemi,

Adedokun,

Oyebola

2024

Preprint

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Background This work investigates radon activities in administrative offices in five different floors to ascertain annual equivalent dose (AEqD) and excess lifetime cancer risk due to gamma radiations on the office workers. Method RAD7 an electronic radon detector manufactured by Durridge Co. USA calibrated in-house was used to measure the indoor radon concentration levels in offices of the Administration block. Results Mean radon concentration from offices studied ranged from 134.72 Bqm-3 − 536.98 Bqm-3in all the offices. The mean of the annual effective dose due to 222Rn progeny (AEDR) in mSv/yr. is highest in GFL this value is 2.344 x 10− 3 mSv/yr. and it’s lowest at the LFL with the value of 1.010 x 10− 3 mSv/yr. The lung cancer cases mean, maximum and the 95th percentile per million people values obtained from offices and the obtained values are 85.81, 11.44, and 11.21. Conclusion The obtained values were lower than the public limit of 1mSvy-1 as recommended by ICRP, and this findings show a significant correlation between indoor radon effective doses obtained by other studies elsewhere.

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Estimation of Indoor Radon and Its Progeny in Dwellings of Akoko Region, Ondo State, Southwestern Nigeria

Cited by 8 publications

References 1 publication

Toxicity of Radon-222 in Groundwater across Keana in Nasarawa, Nigeria

Toxicity of Radon-222 in Groundwater across Keana in Nasarawa, Nigeria

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Assessment of Indoor Radon Concentration in Administrative offices and Estimation of the Annual Effective Dose

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