Estimation of Activity Concentration of Uranium, Thorium and Potassium, by Using HPge Detector

The measurements of activity concentration of uranium, thorim and potassium were carried out in radiation shielding bricks, granites, soil, hematite, bricks, and sand by using a high resolution high purity Germanium (HPGe) gamma-ray spectrometer system. The activity concentrations of uranium, thorium and potassium contents are 80 ± 5 Bq/kg, 103±10 Bq/kg and 1014±15 Bq/kg, respectively in radiation shielding bricks, 61 ±2.0 Bq kg, 23.27±1.8 Bq/kg and 270±14 Bq/kg, respectively in hematite aggregate, 50±4.0 Bq/kg, 41±3.7 Bq/kg and 370±I5 Bq/kg, respectively in cement. 57±3.5 Bq/kg, 64.56±2.0 Bq/kg and 990±7.3 Bq/kg, respectively in ordinary aggregate, 35±2.0 Bq/kg, 50±2.8 Bq/kg and 490±11 Bq/kg, respectively in sand, 31±1.75 Bq/kg, 42±2.5 Bq/kg and 280±10 Bq/kg, respectively in bricks and 27±2.0 Bq/kg, 18±2 Bq/kg, 190±7 Bq/kg, respectively in soil. The result shows that the measured activity concentrations in all samples are less than the average international recommended value. The calculated indoor and outdoor effective dose due to natural radioactivity of radiation shielding bricks, hematite aggregate, ordinary aggregate, cement, bricks, sand, and soil samples are also lower than the average national and international recommended value of 1.0 mSv.Y−1.