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.
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K. Manai, C. Ferchichi, M. Oueslati and A. Trabelsi, "Gamma Radiation Measurements in Tunisian Marbles," World Journal of Nuclear Science and Technology, Vol. 2 No. 3, 2012, pp. 80-84. doi: 10.4236/wjnst.2012.23013.
 M. A. Misdaq and A. Amghar, “Radon and Thoron Emanation from Various Marble Materials Impact on the Workers,” Radiation Measurements, Vol. 39, No. 4, 2005, pp. 421-430. doi:10.1016/j.radmeas.2004.06.011
 A. J. A. H. Khatibeh, N. Ahmad, Matiullah and M. A. Kenawy, “Natural Radioactivity in Marble Stones, Jordan,” Radiation Measurements, Vol. 28, No. 1-6, 1997, pp. 345-348. doi:10.1016/S1350-4487(97)00097-8
 E. S. Larsen and D. Gottfried, “Uranium and Thorium in Selected Sites of Igneous Rocks,” American Journal of Science, Bradley Volume, Vol. 258A, 1960, pp. 151-169.
 M. Brai, S. Basile, S. Bellia, S. Hauser, P. Puccio, S. Rizzo, A. Bartolotta and A. Licciardello, “Environmental Radioactivity at Stromboli (Aeolian Islands),” Applied Radiation and Isotopes, Vol. 57, No. 1, 2002, pp. 99-107.doi:10.1016/S0969-8043(02)00074-X
 IAEA, “Measurement of Radionuclides in Food and the Environment,” Technical Report, Series No. 295, 1989, Vienna.
 R. R. Benke and K. J. Kearfott, “Soil Sample Moisture Content as a Function of Time during Oven Drying for Gamma-Ray Spectroscopic Measurements,” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 422, No. 1-3, 1999, pp. 817-819.doi:10.1016/S0168-9002(98)01004-3
 A. S. Mollah, G. U. Ahmed, S. R. Hussain and M. M. Rahman, “The Natural Radioactivity of Some Building Materials Used in Bangladesh,” Health Physics, Vol. 50, No. 6, 1986, pp. 849-851.
 A. M. El-Arabi, “Gamma Activity in Some Environmental Samples in South Egypt,” Indian Journal of Pure and Applied Physics, Vol. 43, No. 6, 2005, pp. 422-426.
 C. Kohshi, I. Takao and S. Hideo, “Terrestrial Gamma Radiation in Koshi Prefecture, Japan,” Journal of Health Science, Vol. 47, No. 4, 2001, pp. 362-372.doi:10.1248/jhs.47.362
 M. Tzortzis, H. Tsertos, S. Christo and G. Christodoulides, “Gamma-Ray Measurements of Naturally Occurring Radioactive Samples from Cyprus Characteristic Geological Rocks,” Radiation Measurements, Vol. 37, No. 3, 2003, pp. 221-229. doi:10.1016/S1350-4487(03)00028-3
 UNSCEAR, “Sources, Effects and Risks of Ionizing Radiation,” United Nations Scientific Committee on the Effects of Atomic Radiation, New York, 2000.
 E. Stranden, “Some Aspects on Radioactivity of Building Materials,” Pyhsica Norvegica, Vol. 8, 1976, pp. 167177.
 J. Beretka and P. J. Mathew, “Natural Radioactivity of Australian Building Materials, Industrial Wastes and by Products,” Health Physics, Vol. 48, No. 1, 1985, pp. 8795. doi:10.1097/00004032-198501000-00007
 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
 R. Krieger, “Radioactivity of Construction Materials,” Betonwerk Fertigteil Technik, Vol. 47, 1981, pp. 468-473.
 L. S. Quindos, P. L. Fernandez and J. Soto, “Building Materials as Source of Exposure in Houses,” In: B. Seifert and H. Esdorn, Eds., Indoor Air ‘87, Institute for Water, Soil and Air Hygiene, Berlin, 1987, p. 365.
 E. Cottens, “Actions against Radon at the International Level,” Proceedings of the Symposium on SRBII, Journee Radon, Royal Society of Engineers and Industrials of Belgium, Brussels, 17 January 1990.