Measurement of activity concentration of primordial radionuclides in soil samples from Thirthahalli taluk and the assessment of resulting radiation dose

作者：Shilpa G M^*; Anandaram B N; Mohankumari T L

来源：Journal of Radioanalytical and Nuclear Chemistry, 2018, 316(2): 501-511.

DOI：10.1007/s10967-018-5788-2

• Gamma spectrometry
• Gamma absorbed dose
• Radiation hazard index
• Excess life time cancer risk

The activity concentration of primordial radionuclides Ra-226, Th-232, and K-40 in soil samples of Thirthahalli taluk were measured systematically by using a low background HPGe detector coupled to 16 K MCA. The measured activity concentration of Ra-226 lies between 5.1 +/- 0.2 and 79.5 +/- 1.7 Bq kg(-1)with an average activity of 25.99 Bq kg(-1), Th-232 ranges from 5.1 +/- 0.3 to 95.3 +/- 2.2 Bq kg(-1)with an average activity of 33.60 Bq kg(-1)and that of K-40 varies from 18.3 +/- 1.5 to 833.4 +/- 17.5 Bq kg(-1)with an average activity of 175.52 Bq kg(-1). Higher concentration of these radionuclides were found in the soil samples where the regional geology is granites. The consequential gamma dose and the corresponding radiation hazard was also estimated and is found to be within the permissible limits. The possible radiological impact on the public was also determined and these results are presented in this paper.

• 出版日期2018-5