Determination and Measurement of Natural Radioactivity in Environmental Samples of Songon's Mine in Iran

In this study amount of natural radioactivity in soil and stone of songon's copper mine of different areas has been measured. Special activity of 238U, 232Th and 40K radio nuclides by the use of Gamma-ray spectroscopy system and High Purity Germanium (HPGe) detector has obtained and the analysis of obtained gamma's spectrum by Mastro software and with consideration of sample's selfcoefficient absorption has been calculated. Thanks to the importance of recognizing the environmental contaminator's factors and its protective responsibility against them, the purpose of this study, isdetermining the range of natural radioactivity on mentioned area and is comparing those factors with universal standard level. Calculations indicate that the range of foresaid elements specially 40Kon the most regions are higher than the presented universal average range by (UNSCEAR, 2000). Attention to the effects of biological radiation in human was acquired against rays (security of safety) for those people who are working in mines which is a very important factor.