The radiation dose and distribution coefficient of ~(210)Po and ~(210)Pb concentrations in aquatic environs of major rivers of coastal Karnataka

摘要

The activity of ~(210)Po and ~(210)Pb was measured in different matrices of aquatic ecosystem of the major rivers of Coastal Karnataka viz, Kali, Sharavathi and Netravathi. The environmental samples such as surface water, suspended particulate matter and sediment have been subjected to analyses. The activity of these two radionuclides were determined by radiochemical separation of ~(210)Po and counting the activity using a ZnS(Ag) alpha counter. The activity ratio of ~(210)Po and ~(210)Pb and correlation between the activity of these radionuclides were studied. From the measured concentration of ~(210)Po and ~(210)Pb, the internal Committed Effective Dose to the population for the study area was calculated. The distribution coefficient Kd between water, suspended particulate matter and sediments have been calculated to understand the distribution and accumulation of these radionuclides in different matrices of the aquatic environment.