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2015 ; 8
(ä): 677
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Radon level in a Nigerian University Campus
#MMPMID26578086
Afolabi OT
; Esan DT
; Banjoko B
; Fajewonyomi BA
; Tobih JE
; Olubodun BB
BMC Res Notes
2015[Nov]; 8
(ä): 677
PMID26578086
show ga
BACKGROUND: Globally, 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. RESULTS: The result revealed that the radon
level obtained in the sampled offices ranged from 0.0 to 5.3 pCi/L (196 Bq/m(3)).
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). CONCLUSION: The 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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