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M. Tufail, N. Ahmad, S. M. Mirza, N. M. Mirza and H. A. Khan, “Natural Radioactivity from the Building Materials Used in Islamabad and Rawalpindi, Pakistan,” Science of the Total Environment, Vol. 121, 1992, pp. 283-291.doi:10.1016/0048-9697(92)90321-I

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• TITLE: Gamma Radiation Measurements in Tunisian Marbles

  AUTHORS: Kais Manai, Chiraz Ferchichi, Mansour Oueslati, Adel Trabelsi

  KEYWORDS: Radioactivity; Marble; Radium Equivalent; External and Internal Hazard Indices

  JOURNAL NAME: World Journal of Nuclear Science and Technology, Vol.2 No.3, July 23, 2012

  ABSTRACT: The radioactivity of 15 kinds of different granites collected in Tunisia was determined by gamma-ray spectrometry using hyper-pure germanium (HPGe) detector. The average activity concentrations for primordial radionuclides 238U, 232Th and 40K were respectively 33.24, 8.01 and 116.98 Bq/kg. The activity concentrations ranged from 3.59 to 87.37 Bq/kg for 238U, from 0.45 to 25.34 Bq/kg for 232Th and from 24.06 to 380.23 Bq/kg for 40K. The measured activity concentrations were used to assess of the radium equivalent activity ranged from 22.2 to 995.8 Bq/kg, the absorbed dose rate in air from 7 to 1209 nGy/h and the internal (0.1 to 2.8) and external (0.1 to 2.7) hazard indices. The data obtained in this study may be useful for natural radioactivity mapping.