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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(04) [April 2012] >
| Title: | Natural radioactivity levels and associated radiation hazards in Nile river sediments from Aswan to El-Minia, Upper Egypt |
| Authors: | El-Taher, A
Abbady, Adel G E |
| Keywords: | Natural Radioactivity
Nile River Sediments
Radiation Hazards
Upper Egypt |
| Issue Date: | Apr-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The natural radionuclides 226Ra, 232Th and 40K
contents in the Nile river sediments at various locations in Upper Egypt from Aswan to El-Minia have
been investigated using gamma spectrometric analysis. Determination and
measurement of radionuclide concentration are of great importance for
assessment of external radiation dose received by man. The range and mean
values of 226Ra, 232Th and 40K activity
concentrations are 13-42 (29), 10-67 (45) and 74-139 (123) Bq kg-1,
respectively. These results are found to be in agreement with those reported
data for Egyptian soil as 17 (5–64), 18 (2–96) and 320 (29–650) Bq/kg dry
weight (UNSCEAR, 2000). The mean radium equivalent (Raeq) and dose rates are 100.21± 10.01 Bq kg-1,
44.88±6.69 n Gy h-1, respectively. The
measured activity concentrations differ widely as their presence in the Nile river depends on the pertinent environmental
situation such as the presence of dams, barrages and sediments type. The other
factors controlling the distribution of the detected natural radioisotopes have
been discussed. |
| Page(s): | 224-230 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(04) [April 2012]
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