International Journal of Pure and Applied Physics. ISSN 0973-1776 Volume 7, Number 3 (2011), pp. 229-234 © Research India Publications http://www.ripublication.com/ijpap.htm Estimation of 210Po in Coastal Regions of Kannyakumari District of Tamil Nadu, India V. Sarojini1, K. Esaiselvan2, K. Sreekumar3 and T. Chithambra Thanu4 1Asst. Prof. Dept. of Physics, Lekshmipuram College of Arts and Science, Neyyoor-629802, Tamil Nadu, India E-mail:
[email protected] 2Chemist, Indian Rare Earths Limited, Manavalakurichy, Tamil Nadu, India E-mail:
[email protected] 3Scientific Officer, Health Physics Unit, Indian Rare Earths Limited, Manavalakurichy, Tamil Nadu, India E-mail:
[email protected] 4Associate Prof. Dept of Physics, S.T. Hindu College, Nagercoil, Tamil Nadu, India E-mail:
[email protected] Abstract The coastal regions of Kanyakumari district, Tamil Nadu in India between Midalam to Muttom stretch is witnessed as a naturally high back ground radiation area. Soil samples from the beach area were analysed for 210Po activity. The activity concentration of 210Po was measured by chemical deposition method in the beach soils along the coastal stretch from Muttom to Midalam. These studies were carried out from April 2010 to May 2010 in the Health Physics Unit of BARC located in the campus of Indian Rare Earths Limited, Manavalakurichy in Tamil Nadu. The activity of 210Po in the beach soil were found to be varying from 11.32 Bq/Kg to 54.53 Bq/kg. The maximum 210Po activity was found to be 54.53 Bq/Kg estimated at Chinnavilai and the minimum 210Po activity was found to be 11.32 Bq/Kg estimated at Colachel.