Radiological Hazard Assessment of Sharp-Sand from Ilorin-East, Kwara State, Nigeria

Abstract Measurement of activity concentration primordial radionuclides 40 K, 232 Th, 238 U and the corresponding gamma dose rate over a major sharp-sand field in Ilorin, Nigeria, was carried out using Super Spec RS125 ray spectrometer. The spectrometer gives in-situ measurement radioactivity concentration. Measurements were taken 50 locations. peak values measured concentrations U, (D) resulting annual effective (AED) are 688.60, 48.17, 30.86 Bqkg ?1 , 49.50 nGyh 0.06 mSvy respectively, while their lowest 31.30, 1.24, 0.41 4.70 0.01 respectively. estimated mean AED 454.48, 13.52, 11.63 32.96 0.04 Consequently, hazard parameters i.e. within permissible levels. This follows that risk radiation exposure for this location is comparatively less, but general public may not be safe from to indoor ionizing since no amount stochastic effects.