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Assessment of Natural Radio activity in Rock Samples around South Kordofan State, Sudan

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Author Affiliations

  • 11Physics Department, College of Sciences and Arts in Al-Namas (Female), University of Bisha, Saudi Arabia 2 Physics Department, Faculty of Sciences, Sudan University of Sciences and Technology, Sudan
  • 22 Physics Department, Faculty of Sciences, Sudan University of Sciences and Technology, Sudan 3 Physics Department, Faculty of sciences, Taibah University, Al- Medina Al-Munawarah, Saudi Arabia
  • 34Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan
  • 45 Physics Department, Faculty of Education, University of Blue Nile, Sudan
  • 54Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan 6Committee on Radiation and Environmental Pollution Protection, Al Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
  • 64Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan

Int. Res. J. Environment Sci., Volume 5, Issue (5), Pages 48-52, May,22 (2016)

Abstract

This study was conducted to assess gamm a dose and radioactivity level in some areas in South Ko rdofan State. Activity level of 238U, 232Th and 40K has been investigat ed by γ-ray spectroscopy equipped with NaI (Tl). The av erage concentrations were 282.76, 142.79and1081.50 Bqkg-1, respectively. Moreover, the absorbed dose rate in air at height of 1m from the ground has been calculated, using four sets of dose r ate conversion factors (DRCFs) and corresponding annu al effective dose has been estimated. The average absorbed dose rate values obtained were found to be262.27, 222.39, 233.94 and 261.98nGyh-1, respectively, and annual effective dose we re found to be 321.87, 272.92, 287.10 and 321.52µSvy-1 , respectively, for DRCFs (SAITO, MCNP, GEANT and UNSEAR). H owever, the results indicate the radioactivity level in the surveyed area was higher than the global data reported in the UNSC EAR publications for normal background areas.

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