Volume 48, Number 3, Juillet-Septembre 2013
|Page(s)||355 - 365|
|Published online||24 May 2013|
Natural radioactivity and associated radiation hazards of some commonly used building materials in southwest Nigeria
Department of Physics, Ekiti State University,
P.M.b. 5363, Ado Ekiti, Nigeria
2 Department of Physics, Adekunle Ajasin University, Akungba Akoko, Nigeria
* e-mail: firstname.lastname@example.org
Received: 9 November 2012
Accepted: 6 March 2013
The activity concentrations of primordial radionuclides (40K, 226Ra and 232Th) in five different types of commonly used building materials in southwest Nigeria were measured using a low-background NaI(Tl) detector coupled to an IBM-compatible multichannel analyzer. The highest mean concentration of 40K, which was 887.5 ± 101.3 Bq.kg–1, was obtained in gravel. Also, the highest mean concentrations of 226Ra and 232Th were obtained, respectively, in sand and brick samples. The lowest mean concentrations of 40K, 226Ra and 232Th, respectively, were obtained in brick and cement sample. The annual gonadal effective dose (AGED) and other radiological parameters were estimated from the activity concentrations of the radionuclides. The highest mean values of the AGED and radium equivalent activity concentration obtained were 359.1 μSv.y–1 and 110.9 Bq.kg–1, respectively. All these radiological parameters were below the maximum permissible levels recommended for safe use of materials in building construction. It can therefore be concluded that these materials do not pose any radiological hazard to the dwellers of buildings constructed with them.
Key words: building materials / primordial radionuclides / radiation hazards / NaI(Tl) detector
© EDP Sciences, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.