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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(03) [March 2011] >
| Title: | Radiological significance of Egyptian limestone and alabaster used for construction of dwellings |
| Authors: | El-Taher, A
Makhluf, S |
| Keywords: | Natural radioactivity
Limestone
Alabaster
Radiation hazards |
| Issue Date: | Mar-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The natural radionuclides in limestone and alabaster found in Assuit
Governorate in Upper Egypt have been
investigated by passive gamma-ray spectrometry. From
the measured  -ray spectra, specific activities were determined. The measured
activity concentrations for these natural radionuclides were compared with the
reported data from other countries. The radiation hazard parameters related to
the exposure of limestone and alabaster have also been calculated. The obtained
results of radium equivalent Raeq, level index Ir, the external
hazard index Hex and absorbed dose rate in limestone (90.44,
0.63, 0.17, 39.94) and (70.86, 0.50, 0.13, 31.55) are lower than the acceptable
level 370 Bqkg-1 for radium equivalent Raeq, 1 for level index Ir, the external
hazard index Hex ≤ 1 and 59 (nGy.h−1) for absorbed
dose rate. So limestone and alabaster can be used as building construction
without exceeding the proposed radioactivity criterion level. |
| Page(s): | 157-161 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(03) [March 2011]
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