Assessment of natural radionuclides and its radiological hazards from tiles made in Nigeria

被引:27
作者
Joel, E. S. [1 ]
Maxwell, O. [1 ]
Adewoyin, O. O. [1 ]
Ehi-Eromosele, C. O. [2 ]
Embong, Z. [3 ]
Saeed, M. A. [4 ]
机构
[1] Covenant Univ Ota, Dept Phys, Ota, Nigeria
[2] Covenant Univ Ota, Dept Chem, Ota, Nigeria
[3] Fac Appl Sci & Teknol Tun Hussein Onn, Malaysia Pagoh Campus Km 1,Jalan Panchor, Muar 84600, Johor, Malaysia
[4] Univ Educ Township, Div Sci & Technol, Lahore, Pakistan
关键词
Radioactivity concentrations; Radiological hazards; Tiles; BUILDING-MATERIALS; BY-PRODUCTS; RADIOACTIVITY; PAKISTAN; SAMPLES; CHINA; DISTRICTS; TURKEY; BRICK; SOIL;
D O I
10.1016/j.radphyschem.2017.11.003
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Activity concentration of 10 different brands of tiles made in Nigeria were analyzed using High purity Germanium gamma detector and its hazard indices such as absorbed dose rate, radium equivalent activity, external Hazard Index (Hex), internal Hazard Index (Hin), Annual Effective Dose (mSv/y), Gamma activity Index (I gamma) and Alpha Index (I alpha) were determined. The result showed that the average activity concentrations of radionuclides (Ra-226, Th-232 and K-40) content are within the recommended limit. The average radium equivalent is within the recommended limit of 370 Bq/kg. The result obtained further showed that the mean values for the absorbed dose rate (D), external and internal hazard index, the annual effective dose (AEDR) equivalent, gamma activity index and Alpha Index were: 169.22 nGyh(-1), 0.95 and 1.14, 1.59 mSv/y, 1.00 Sv yr(-1) and 0.34 respectively. The result established that radiological hazards such as absorbed dose rate, internal hazard, annual effective dose rate, gamma activity index and Alpha Index for some samples are found to be slightly close or above international recommended values. The result for the present study was compared with tiles sample from others countries, it was observed that the concentration of tiles made in Nigeria and other countries are closer, however recommends proper radiation monitoring for some tiles made in Nigeria before usage due to the long term health effect.
引用
收藏
页码:43 / 47
页数:5
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