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Radiation Protection Dosimetry Advance Access originally published online on August 15, 2006
Radiation Protection Dosimetry 2007 123(2):215-220; doi:10.1093/rpd/ncl103
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Gamma-ray spectroscopic analysis of selected samples from Nile river sediments in upper Egypt

M. A. M. Uosif*

Physics Department, Faculty of Science, AL-Azhar University, Assuit, Egypt

* Corresponding author: Dr_Mohamed_Amin{at}lycos.com

Received May 13, 2006, amended July 1, 2006, accepted July 9, 2006


  Abstract

Selected sedimentary samples from different locations on the east and west banks of the Nile River in Upper Egypt were analysed by natural radioactivity measurements to detect the presence of radioactive elements. From the analysis of radiations from 226Ra, 232Th and 40K isotopes, the samples were found to contain Ra, Th and K in concentrations up to 52 ± 7.3, 76.2 ± 6.2 and 351.9 ± 17.6 Bq kg–1, respectively. The absorbed dose rate in air was found to be in the range of 9.6–84.8 nGyh–1. The representative external hazard index values for the corresponding samples were also estimated.


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