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Natural Radioactivity in Building Materials from Kirkuk City of Iraq |
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PP: 199-203 |
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doi:10.18576/jrna/030310
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Author(s) |
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Ali H. Taqi,
Ahmad M. Shaker,
Ammar A. Battawy,
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Abstract |
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| The natural radioactivity concentrations in 10 samples from different raw and construction materials in Kirkuk city of Iraq were measured using a hyper purity germanium (HPGe) detector. The determined average values of the specific activity were 38.68 Bq/kg (226Ra), 11.84 Bq/kg (232Th), and 169.98 Bq/kg (40K). The results have been compared with the acceptable worldwide average values and with those obtained in some other countries. Additionally, the calculated radiological hazard parameters have also been calculated. The radium equivalent activity Raeq was 85.008 Bq/kg, the absorbed gamma dose rate D was 40.517 nGy/h, the annual effective dose rate AEDE outdoor and indoor were 0.051 and 0.198 respectively, the external hazard Hex was 0.220, the internal hazard Hin was 0.298, and the Gamma radiation representative level Index Iγ was 0.633. There are some materials which have values slightly higher than the internationally allowable values.
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