Abstract
The level of natural radioactivity in forty nine soil samples collected from Tourbh governorate, Saudi Arabia were measured using gamma ray spectrometer. Analyses of soil samples have been performed to determine the radioactive concentrations of Ra-226, Th-232 and K-40. The results show that these radionuclides concentrations present in Bq/kg and ranged from 1.95 +/- 0.08 to 13.07 +/- 0.5, 1.33 +/- 0.11 to 10.04 +/- 0.61 and 39.92 +/- 3.43 to 193.71 +/- 16.66 for Ra-226, Th-232 and K-40 respectively. To assess the radiation hazard, the radium equivalent activity (Ra-eq), the representative level index, I-gr, and absorbed dose in air for all samples were calculated. The data were discussed and compared with the published data in different countries. [Alharbi W. R. Measurements of Natural Radionuclides in Soil samples from Tourbh Governorate, Saudi Arabia. Life Sci J 2012; 9(4):3573-3577]. (ISSN: 1097-8135). http://www.lifesciencesite.com. 528