【摘 要】
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Continuous hourly monitoring of radon activity concentrations was carried out in a masonry house in Abeokuta,Nigeria.Besides the radon activity concentrations,air temperature,relative humidity and bar
【机 构】
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Department of Physics,Federal University of Agriculture,Abeokuta,P.M.B. 2240 Abeokuta Nigeria
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Continuous hourly monitoring of radon activity concentrations was carried out in a masonry house in Abeokuta,Nigeria.Besides the radon activity concentrations,air temperature,relative humidity and barometric pressure were also recorded simultaneously on hourly basis throughout the six-month exposure period,spanning June to December,2012.Average diurnal variation shows that 222Rn concentrations were high during night and early morning hours and low during afternoon hours.The monthly averages of 222Rn concentration range from 19.9土 12.2 t0 53.5土 17.3 Bq m -3,with an overall average of 32.3± 10.9 Bq 111-3.Indoor radon concentration correlates positively with relative humidity (+0.4836),and negatively with both air temperature (-0.3757) and barometric pressure (-0.3463),although daytime radon concentration and air temperature correlate positively (+0.5951).
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