Estimation of ambient gamma radiation dose and drinking water radon concentration in coastal taluks of Uttara Kannada district, Karnataka.

Authors :: Sannappa, J.
Suresh, S.
Rangaswamy, D. R.
Srinivasa, E.
Source :: Journal of Radioanalytical & Nuclear Chemistry; Mar2020, Vol. 323 Issue 3, p1459-1466, 8p, 1 Color Photograph, 2 Charts, 2 Graphs, 1 Map
Publication Year :: 2020
Abstract: This study assesses the ambient gamma dose rate and radon concentration in drinking water at different locations in few coastal taluks of Uttara Kannada district. The ambient gamma dose and <superscript>222</superscript>Rn activity in drinking water has been estimated by using micro R survey meter and Emanometry technique respectively. The annual effective doses ranges from 0.39 to 0.82 mSvy<superscript>−1</superscript> with a geometric mean value of 0.55 mSvy<superscript>−1</superscript> and it is slightly higher than the world average value. <superscript>222</superscript>Rn activity in drinking water vary from 3.34 ± 0.22 to 160.18 ± 1.84 Bql<superscript>−1</superscript> with mean value of 25.07 ± 0.86 Bql<superscript>−1</superscript>. Annual average ingestion dose due to consuming water are well below the WHO and EC suggested action level of 100 µSvy<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]

Subjects :: RADON
RADIATION doses
GAMMA rays
WELL water
CARBONACEOUS aerosols
DRINKING water

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