Abstract
This article contains data on the activity concentration of natural radionuclides in coastal sediment samples collected from Pulicat Lake to Vadanemmeli, East coast of Tamil Nadu using NaI(Tl) detector based γ-spectrometry. As marine sediments are found to be the repository of many radioactive pollutants, studied the objectives like (i) determine natural radionuclide activity concentrations in sediment samples in and around Chennai coast (ii) evaluate the radiological hazards due to natural radioactivity associated with coastal sediments and (iii) identify areas which may be radiological hazardous for the public along the study area. The average activity concentration of 238U, 232Th and 40K in the present study is lower than world median value. The radiological hazard indices such as External hazard index (Hex) and Gamma representative level index, (Iγ) were evaluated to assess radiation hazard associated with the sediments. The simulated results show sediments do not pose any significant radiation hazards due to concentration of natural radionuclides.
Highlights
Data on natural radioactivity and associated radiation hazards in coastal sediment of Chennai Coast, Tamilnadu, India using gamma ray spectrometry
Table NaI (Tl) detector (Scionix make) based gamma spectrometer of 3′′ dia × 3′′ thick housed inside 15 cm thick Pb shielding with graded lining Raw data The sediment samples were collected from Pulicat Lake to Vadanemmeli of Chennai Coast along the Bay of Bengal Coastline in Southeastern India using a Peterson grab sampler during the pre-monsoon condition
Sediment samples were subjected to gamma spectral analysis with a counting time of 20,000 s
Summary
Table NaI (Tl) detector (Scionix make) based gamma spectrometer of 3′′ dia × 3′′ thick housed inside 15 cm thick Pb shielding with graded lining Raw data The sediment samples were collected from Pulicat Lake to Vadanemmeli of Chennai Coast along the Bay of Bengal Coastline in Southeastern India using a Peterson grab sampler during the pre-monsoon condition. Sediment samples were subjected to gamma spectral analysis with a counting time of 20,000 s. The concentrations of various radionuclides of interest were determined in Bq kg−1 using the count spectra. The activity concentrations of 238U, 232Th and 40K in sediment were determined using NaI(Tl) detector. This data information provides the natural radioactivity concentration in the coastal sediment samples of Chennai Coast, Tamilnadu, India. The data can be useful for other researchers investigating the assessment of radiation hazards Data provide baseline radiometric data on environmental radioactivity in the region for future epidemiological studies and environmental monitoring initiatives in the study area
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