DETERMINATION OF THE NATURAL RADIOACTIVITY LEVELS IN SELECTED AREAS OF ZARQA, JORDAN

Emad Ahmed, Mustafa Farrag
unpublished
In the current study, the concentration levels of naturally occurring radioactive materials (NORMs) of 238 U, 232 Th, and 40 K in the surface soil samples of selected areas in Zarqa/Jordan were studied. The collected soil samples were analyzed by means of gamma-ray spectrometry. Radioactivity concentration of the naturally occurring radionuclide of 238 U, 232 Th, and 40 K in the soil samples varies from 30.72± 2.48 Bq kg-1 to 1428.57 Bq kg-1 , below detection limit (BDL) to 22.98 ±2.95 Bq kg-1
more » ... 2.98 ±2.95 Bq kg-1 , and < 8.21 Bq kg-1 to 584.59 ±26.3 Bq kg-1 respectively. Radium equivalent activity, absorbed dose rate, annual effective dose equivalent were also calculated for assessment of radiological risk. External hazard value (H ex) is between 0.71 and 3.863. In this study 238 U concentration is higher than the acceptable reported by UNSCEAR-2000.
fatcat:bkpjxexsp5eczawclwvlzzne34