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Radiation Protection Dosimetry Advance Access published online on June 25, 2008
Radiation Protection Dosimetry, doi:10.1093/rpd/ncn175
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

RADIOLOGICAL SIGNIFICANCE OF BEACH SAND USED FOR CLIMATOTHERAPY FROM SAFAGA, EGYPT

M. A. M. Uosif1,*, A. El-Taher1 and Adel G. E. Abbady2

1 Physics Department, Faculty of Science, Al-Azhar University, (Assuit branch), Egypt
2 Physics Department, South Valley University, Faculty of Science, Qena, Egypt

* Corresponding author: dr_mohamed_amin{at}lycos.com

Received January 16, 2008, amended March 25, 2008, accepted May 29, 2008

As a part of national survey to evaluate natural radioactivity in the environment, concentration levels of radioactivity were analysed for sand samples from Safaga, Egypt, which is an ideal area for climatotherapy of psoriasis. Gamma dose rates of three beaches in Safaga were measured. The values ranged from 195.1 to 210.7 nGy h–1. The activity concentrations (Bq kg–1) of radionuclides 238U series, 232Th series and 40K in three different sand profiles (0–5, 5–10, 10–15, 15–25 and 25 – 40 cm) were measured using gamma-ray spectrometry. The annual effective doses were 259 µSv y–1 for Minveila, 255 µSv y–1 for Ganet Safaga and 239 µSv y–1 for Masab El-Ghazel beaches. The dose rates, radium equivalent activities and external hazard indices were evaluated and compared with the international data. These results may contribute to the determination of absorbed dose rate reference levels in Red Sea Coast at Safaga city.


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