Natural Radioactivity and Radiological Hazard Effects from Granite Rocks in the Gabal Qash Amir Area, South Eastern Desert, Egypt

The existence of radioactivity linked to the heavy-bearing minerals in building materials—such as granite—has increased attention extraction procedure. Granite rocks play an essential economic role various areas Egypt. Thus, this study intended detect 238U, 232Th, and 40K activity concentrations examined granite samples determine corresponding radiological risks associated with granite. studied were collected Gabal Qash Amir area (south Eastern Desert, Egypt). obtained results for 238U (193 ± 268) Bq/kg, 232Th (63 29) (1034 382) Bq/kg indicated that there moderate investigated samples, which greater than worldwide average. levels are due secondary alteration radioactive-bearing cracks granites (secondary muscovite wolframite, uraninite, uranophane, beta-uranophane, autunite, xenotime, columbite, zircon, monazite). risk assessment public from radionuclides was predicted via estimating hazard factors, such radium equivalent content (362 Bq kg−1), compared recommended limit. dosing rate Dair air (169.2 nGy/h), annual effective dose both outdoors (AEDout ~ 0.21 0.17 mSv) indoors (AEDin 0.83 0.67 mSv), gonadal (AGDE 1.18 0.92 well external (Hex) internal (Hin) indices (>1), another factor excess lifetime cancer risk. According statistical investigation, inappropriate use construction infrastructure fields. They may induce health problems levels, exceed limits.