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The aim of this study is to determine the transfer factor soil-to-plant and to assess the concentration level of natural and artificial radionuclide (238 U, 226 Ra, 228 Ra, 232 Th, 40 K and 137 Cs) in samples from Saluga and Ghazal Protectorate area in Aswan, Egypt, by using High Pure Germanium detector (HPGe) Environmental Radioactivity Measurements Labrotary in faculty of science Qena. Reported values for natural radionuclides ranged from 8.81

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The distribution of natural radionuclide γ-ray activities and their respective annual effective dose rates, produced by 238 U, 226 Ra, 228 Ra, 235 U, 232 Th and 40 K were determined for igneous rock samples collected along the road between Idfu and Marsa Alam in eastern desert of Egypt. This subject is important in environmental radiological protection, since igneous rocks are widely used as building material. The variation in concentration of radionuclides for thirty igneous rock samples was determined. A HPGe spectrometer was used for quantification of gamma emitting radionuclides in the samples. All igneous rocks contained radionuclides from the uranium and thorium series as well as 40 K. 238 U concentrations in samples ranged from 12. 235 U from 1.16±0.11 to 4.83±0.44, 228 Ra ranged from 10. 24±0.70 to 17.35±1.29, 232 Th range from 9.99±0.67 to l7.65±1.23 Bq.kg -1 and 40 K from 298.58±21.74 to 955.78±69.58 Bq.kg -1 .

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