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Environmental Radioactivity From Natural Industrial And Military Sources

The concentrations of natural and artificial radionuclides in soil samples collected from the different areas of Chittagong City Corporation were measured by using Gamma-ray Spectrometry of High Purity Germanium (HPGe) detector.The concentration of 238U was found to be in the range 25.66 ± 5.48 Bq/Kg to 48.87 ± 6.00 Bq/Kg with an average value of 39.11 ± 5.77 Bq/Kg, the activity concentration of 232Th was found to be in the range of 27.12 ± 7.07Bq/Kg to 64.71 ± 7.95 Bq/Kg with an average value of 45.65 ± 7.48 Bq/Kg , and the activity concentration of 40K was found to be in the range of 293.81 ± 75.36 Bq/Kg to 637.49 ± 81.88 Bq/Kg with an average value of 430.56 ± 76.79 Bq/ Kg. The level of natural radioactivity in the region has been compared with the other areas of the world and the world average. In the soil samples, the overall activity concentration of Uranium and Potasium has been found to be higher than that of the world average, and the activity concentration of Thorium has been found to be nearly of the world average and the activity concentration. The artificial radionuclide 137Cs has not been detected in the samples.

Measurement of the Activity Concentrations of the Terrestrial Radionuclides from the Samples Collected from the Northern Part of Chittagong City Corporation, Chittagong, Bangladesh

S. Kabir

Papers

Measurement of the Activity Concentrations of the Terrestrial Radionuclides from the Samples Collected from the Northern Part of Chittagong City Corporation, Chittagong, Bangladesh