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An Evaluation of Natural Radioactivity and Its Associated Health Hazards Indices of Coastal Sediments from Rameshwaram Island, Tamilnadu, India |
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PP: 23-27 |
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doi:10.18576/jrna/020104
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Author(s) |
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N. Harikrishnan,
A. Chandrasekaran,
G. Elango,
P. Eswaran,
R. Ravisankar,
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Abstract |
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| The natural radioactivity activity concentrations of 238U, 232Th and 40K were measured by gamma spectrometry in coastal sediment samples from Rameshwaram Island of Tamilnadu, India using a NaI(Tl) detector. The activity concentrations of natural radionuclides in sediment samples were within the worldwide range. The radiological hazards due to natural radionuclides content such as absorbed dose rate (DR), annual effective dose rate (HR), activity utilization index (AUI), internal radiation hazard (Hin) and external radiation hazard (Hex) inthe sediment samples were calculated. The calculated radiological parameters are compared with recommended safety limits and internationally approved values. From the analysis, it is concluded that no harmful radiation effects are posed due to activity of coastal sediment to public going for recreation on the beaches or sailors and fisherman involved in their activity of the study area from the coastal sediments. |
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