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:: Volume 16, Issue 2 (4-2018) ::
Int J Radiat Res 2018, 16(2): 207-215 Back to browse issues page
Natural radioactivity of some Egyptian materials used in glasses manufacturing and glass ceramics
R. Elsaman, G. A. M. Ali, M. A. M. Uosif, K. H. S. Shaaban, Y. B. Saddeek, K. A. Aly, K. F. Chong
Physics Department, Faculty of Science, Al–Azhar University, Assiut 71524, Egypt , reda_m8282@yahoo.com
Abstract:   (29725 Views)
Background: The new glasses from harmful environmental waste such as cement dust; limestone phosphate, sand and borax (Genkare) were manufactured. Investigation of the radioactivity present in these materials (Phosphate rock, cement dust, limestone, sand and borax) enables one to assess any possible radiological hazard to humankind by such materials. Materials and Methods: Fifteen samples were collected from five locations. Activity measurements have been performed by gamma-ray spectrometer, employing a high-resolution scintillation detector NaI (Tl) crystal 3 ×3 inch. In addition, the radiological hazards were calculated for the investigated samples. Results: The average values of activity ranged from 28±2 to 163±12, 2.8±0.7 to 40±3 and from 49±4 to 1337±74 Bq kg-1 for 226R, 232Th and 40K, respectively. The values of absorbed dose rates, radium equivalent activities and annual effective dose due to 226Ra, 232Th and 40K respectively, are ranged from 22.05 to 101.59 nGy h-1, 45.90 to 224.22 Bq kg-1 and 27.04 to 124.59 µSv y-1. In addition, the values of external hazard index, internal hazard index and gamma index have been calculated.  Conclusion: According to the obtained results, all materials would not present a significant radiological hazard except phosphate. The results of the study could serve as important baseline radiometric data for future epidemiological studies and monitoring initiatives.
Keywords: Natural radioactivity, glass ceramics radiological hazards, phosphate rock, cement dust, limestone, sand, borax and glasses.
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Type of Study: Original Research | Subject: Radiation Biology
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Elsaman R, Ali G A M, Uosif M A M, Shaaban K H S, Saddeek Y B, Aly K A et al . Natural radioactivity of some Egyptian materials used in glasses manufacturing and glass ceramics . Int J Radiat Res 2018; 16 (2) :207-215
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Volume 16, Issue 2 (4-2018) Back to browse issues page
International Journal of Radiation Research
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