Assessment of radioactivity and radiological hazards in commercial ceramic tiles used in Ife-Central, local government area of Osun State, Nigeria
| Autor: | S.F. Olukotun, O.W. Makinde, M.K. Fasasi, O.F. Oladejo, F.A. Balogun, S.T. Gbenu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Biomedical Engineering
chemistry.chemical_element 010501 environmental sciences Radiation hazard 01 natural sciences Biochemistry Genetics and Molecular Biology (miscellaneous) Effective dose (radiation) 030218 nuclear medicine & medical imaging Radium Toxicology 03 medical and health sciences 0302 clinical medicine Ceramic tiles Structural Biology Gamma ray spectrometry 0105 earth and related environmental sciences Radionuclide Equivalent dose business.industry Correlation analysis Gonad chemistry Radiological weapon Environmental science Nuclear medicine business |
| Zdroj: | Egyptian Journal of Basic and Applied Sciences. 3(4):377-382 |
| ISSN: | 2314-808X |
| DOI: | 10.1016/j.ejbas.2016.08.002 |
| Popis: | The activity concentrations of the natural radionuclides (40K, 232Th and 238U) in ceramic tiles use in homes and offices in Ile-Ife were investigated using a NaI (Tl) detector as the detecting device for gamma spectrometry. The gamma absorbed dose rate (DR), radium equivalent activity (Raeq), annual effective dose (Ad), activity concentration index (I), external radiation index (Hex), internal radiation hazard index (Hin), alpha index (Iα), activity concentration index (Iγ), excess lifetime cancer risk (EC), and annual gonadal dose equivalent (AGd) associated with the radionuclides were evaluated in order to assess the radiation hazard of ceramic tiles used in Ile-Ife. The mean activity concentrations of 850, 24, and 128 Bqkg−1 were obtained for 40K, 232Th, and 238U, respectively. These resulted in an annual effective dose that ranged from 0.07 to 0.2 mSvy−1 with a mean value of 0.14 mSvy−1. The results showed that all the calculated radiological parameters are within the recommended safety limit, hence, do not pose significant radiological hazard when used as building materials. In order to determine the similarities and correlations among various samples, all the radiological variables above were subjected to correlation analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|