Chandrashekara M S, Veda S M, Paramesh L
Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore 570 006, India.
Radiat Prot Dosimetry. 2012 Apr;149(3):315-20. doi: 10.1093/rpd/ncr231. Epub 2011 Jul 14.
A systematic study of the ground water and soil samples collected from different locations around Mysore city (12(°)N and 76(°)E) has been carried out. (226)Ra activity concentration in water samples varies from 0.28 to 189 mBq l(-1) with a geometric mean (GM) of 4.75 mBq l(-1) and (222)Rn concentration in ground water varies from 4.25 to 435 Bq l(-1) with a GM of 25.9 Bq l(-1). The GM of inhalation and ingestion doses due to (222)Rn in water is 65.2 and 5.43, µSv y(-1), respectively. The measured GM gamma dose rate in air is 85.4 nGy h(-1) and absorbed dose rate estimated from the measured activity of radionuclides is 92.6 nGy h(-1).
