Indoor radon survey in a university campus of Nigeria

Obed, R. I.; Lateef, H T; Ademola, Augustine Kolapo

doi:10.4103/0971-6203.71760

Cited by 18 publications

(5 citation statements)

References 10 publications

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“…To date, several field studies measuring radon and/or its decay products have been conducted. The result obtained in this study is somewhat similar to that reported by Obed et al [ 12 ] in a university community in Ibadan a contiguous city to Ile-Ife but a bit higher than what was obtained in one of the studies done in a Ghanaian modern sandcrete building where the mean concentration was about 0.1 pCi/L. The mean values obtained at different floors also differed [ 16 ].…”

Section: Resultssupporting

confidence: 89%

“…It has therefore become necessary to investigate work environment for elevated radon levels. As far as the published scientific literature is concerned, only one study has been conducted on the threat radon poses to public health in houses in Nigeria [ 12 ], even though a study on the radon soil gas has been conducted in Ile-Ife [ 13 ]. The interest in radon became urgent because of the known interest in cancer which has heightened in recent years.…”

Section: Introductionmentioning

confidence: 99%

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Radon level in a Nigerian University Campus

et al. 2015

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BackgroundGlobally, radon is a natural contaminant that affects indoor air quality. Several epidemiological studies have implicated high radon levels in the causality of lung cancer. The study therefore determined the environmental level of radon in selective offices in the Obafemi Awolowo University, Ile-Ife. The study employed a descriptive cross-sectional design. A Pro 3-series radon detector was used to determine the radon levels in randomly selected offices. The instrument was set-up in each office and after 48 h, reading was taken and recorded on a proforma data sheet. The structural characteristics of the offices were also assessed by observation.ResultsThe result revealed that the radon level obtained in the sampled offices ranged from 0.0 to 5.3 pCi/L (196 Bq/m3). The median concentration of radon obtained from sampled offices was 0.9 pCi/L. Almost all (95 %) of the offices had radon levels within the ‘permissible’ reference level recommended by World Health Organization. Radon levels also showed a statistically significant decline with height of office building with the mean concentration of radon in offices located on the basement, ground floor and first floor being 1.54 ± 1.32, 0.99 ± 0.56, 0.63 ± 0.41 pCi/L respectively, (F statistic 5.8, p < 0.001).ConclusionThe radon levels obtained in most assessed offices in Obafemi Awolowo University were found to be within the permissible reference levels. Mitigation measures should be put in place in the few offices above permissible levels.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Radon level in a Nigerian University Campus

et al. 2015

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“…The institution in Ondo State (72.21 Bqm -3 ) was observed to have the highest mean radon concentration while the lowest value was recorded for the tertiary institution assessed in Lagos State (48.28 Bqm -3 ). -3 which was lower than mean level of 284 Bqm -3 reported in some offices of Nigeria oldest University (Obed et al, 2010). The variation observed in the results recorded for the offices of the different institutions were largely due to the lithology feature on which each building was constructed as well as the age of the building.…”

Section: Radon Concentrationcontrasting

confidence: 55%

Radiological Risk Assessment of Radon Inhalation in Offices of Selected Institutions in Southwestern Nigeria

Aremu,

Oni,

Oladapo

et al. 2023

LAUJOCES

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The deleterious health implication of human exposure to radon gas has attracted considerable research attention worldwide. Thus, with the increase in number of tertiary institutions in Nigeria whose population predominantly comprises the youth and adults in their productive years. This study hereby estimates the radiological risk associated with radon inhalation induced by the geological of selected tertiary institutions in Southwestern Nigeria. The radon concentration was assessed with Electret Passive Environmental Radon Monitor (E-PERM). The lithology and age of the buildings were also considered for probable effect on the radon concentration. The value of the radon concentration ranged between 2.60 to 219.57 Bqm-3. The lithology feature on which each building was constructed as well as the age of the building was also found to influence the indoor radon concentration. The radiological indices of the rooms ranged from 0.018 to 1.518 mSvy-1 for annual effective dose (AED), 0.004 to 0.335 WLMy-1 for annual exposure (AE), and 1.98 x 10-6 to 1.67 x 10-4 MPY-1 for excess lifetime cancer risk (ELCR). Hence, there is need for continuous education of the people to take adequate preventive measures in mitigating indoor radon level.

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“…An international publication reported the extent of current knowledge about the health effects of inhaled 222 Rn and its progeny and made recommendations for the control of 222 Rn exposure in both dwellings and workplaces [3]. Several studies were conducted on 222 Rn levels in workplaces [4,5]. In the current study we also aimed to measure 222 Rn levels in the workplace.…”

Section: Introductionmentioning

confidence: 99%

“…Obed et al[4] measured222 Rn concentrations at a university campus in Nigeria in order to estimate the effective dose: only 24 offices were studied and the 222 Rn concentrations ranged from 157 to 495 Bq/m 3 .Furthermore, the effective dose to the workers was estimated and varied from 0.99 to 3.12 mSv/y, with a mean of 1.85 mSv/y. This value is less than what was obtained in the present work.Oikawa et al [4] performed 222Rn measurements from 2000 to 2003 at 705 sites in four categories: office, factory, school, and hospital.…”

mentioning

confidence: 99%

Radon concentration measurements at a university campus in Turkey

ALTINSÖZ¹,

ALĞIN²,

AŞICI³

et al. 2016

Turk J Phys

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In this study we measured radon (222 Rn) concentrations in offices at the Meşelik campus of Eskişehir Osmangazi University to estimate the effective dose of 222 Rn and its progeny for office occupants. The measurements were performed four times in 2011 over a period of 3 months using solid state nuclear track detectors (LR-115). A total of 381 LR-115 detectors were installed in 110 different offices, choosing three offices on each floor in the same building. 222 Rn concentrations obtained in the first, second, third, and fourth measurement periods were 163 (73) Bq m −3 , 105 (53) Bq m −3 , 77 (43) Bq m −3 , and 164 (70) Bq m −3 respectively. The 222 Rn concentrations and seasonal 222 Rn variations in the offices were similar to those found in dwellings in Eskişehir. The total annual effective dose was estimated to be 3.398 mSv y −1 .

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Indoor radon survey in a university campus of Nigeria

Cited by 18 publications

References 10 publications

Radon level in a Nigerian University Campus

Radon level in a Nigerian University Campus

Radiological Risk Assessment of Radon Inhalation in Offices of Selected Institutions in Southwestern Nigeria

Radon concentration measurements at a university campus in Turkey

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