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Assessment of Natural Radioactivity and Gamma Dose Rate level round Dalanj area, South Kordofan - Sudan

Author Affiliations

  • 1Department of Physics, Faculty of Education, University of Bule Nile, SUDAN
  • 2Deparment of Physics, Taibah University, AL-Madinah Al-Munawarah, Kingdom of Saudi Arabia, SAUDIA ARABIA, Sudan Atomic Energy Commission, PO Box 3001, Khartoum, SUDAN
  • 3Department of Physic, Faculty of Sciences, Sudan University of Science and Technology, SUDAN
  • 4Committee on Radiation and Environmental Pollution Protection, Al Imam Mohammad IbnSaud Islamic University, Riyadh, SAUDIA RABIA, Sudan Atomic Energy Commission, PO Box 3001, Khartoum, SUDAN

Int. Res. J. Environment Sci., Volume 5, Issue (1), Pages 25-31, January,22 (2016)


This study was carried out to asses natural environmental radioactivity level and estimation gamma absorbed dose rates in soil and foodstuff samples collected round the Dalanj area, South Kordofan. By using (γ -spectroscopy)with NaI (Tl) detector, the activity distribution of radionuclides 238U, 232Th, 137Cs and 40K was to be22.08 Bqkg-1, 28.99 Bqkg-1, 1.38 Bqkg-1 and 319.16 Bqkg-1 in soil samples. On the other hand the activity distribution of radionuclide 238U, 232Th and 40K fallout nuclide137C in Foodstuff samples was to be 4.67Bqkg-1, 4.49 Bqkg-1, and 326 Bqkg-1 respectively. Evaluation of radiological absorbed dose rates and annual effective dose was determined. For the Soil sample were found in the range (26.78 to33.78) nGyh-1 with an average value of 31 nGyh-1, and.(32.86 to 41.47) ÁSvy-1 with an average value of 39.81 ÁSvy-1 respectively. Corresponding for Foodstuff samples ranged from (4.08 to 8.48) nGyh-1 with an average value of 6.16 nGyh-1 and (5.01 to 10.37) ÁSvy-1 with an average value of 7.56 ÁSvy-1 respectively. However, the results indicate the radioactivity level in the surveyed area was less than the global data reported in the UNSCEAR publications for normal background areas soil and Food stuff


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