Assessment of radioactivity in some soil samples of qatar by gamma-ray spectroscopy and the derived dose rates

Tabassum Nasir, Huda Al-Sulaiti, Patrick Henry Regan

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7 Citations (Scopus)


The activity concentrations of some natural and artificial radionuclides have been measured in soil samples by gamma-ray spectroscopy using a high purity germanium detector. From the obtained gamma-ray spectra, the activity concentrations of 238U and 232Th natural decay series and the long-lived naturally occurring radionuclide 40K have been determined, in addition to the fission product 137Cs. A wide range of different gamma-ray lines ranging from -100 keV up to 2.6 MeV, associated with the decay products of238U and232Th series have been analyzed independently to obtain more statistically significant overall results. The data have been analyzed, when secular equilibrium of the radionuclides is achieved within the samples. The weighted activity concentrations of 238U and232Th series vary from 4.4 to 64.4 and 0.8 to 7.6 Bq/kg, respectively. The activity concentrations of 40K and 137Cs have been found in the range of13.6 to 179.5 and 0.3 to 3.7 Bq/kg, respectively. Based on the measured activity concentrations, dose rate, radium equivalent, radiation hazard index and annual effective dose rates have been estimated. The values obtained are within the recommended safety limits.

Original languageEnglish
Pages (from-to)128-134
Number of pages7
JournalPakistan Journal of Scientific and Industrial Research Series A: Physical Sciences
Issue number3
Publication statusPublished - Sep 2012



  • Dose rate
  • Gamma-ray spectroscopy
  • Qatar soil
  • Radiation hazard index
  • Radium equivalent

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)
  • Materials Science(all)
  • Mathematical Physics

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