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ORIGINAL ARTICLE
Year : 2017  |  Volume : 40  |  Issue : 1  |  Page : 27-33

Assessment of natural radioactivity and associated radiation indices in soil samples from the high background radiation area, Kanyakumari district, Tamil Nadu, India


1 Department of Physics and Research Centre, Women's Christian College, Nagercoil, Tamil Nadu, India
2 Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India
3 Radiological Safety Section, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India
4 Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India

Correspondence Address:
A K Ajithra
Department of Physics and Research Centre, Women's Christian College, Nagercoil, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/rpe.RPE_31_16

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Assessment of natural radioactivity is very important from different points of view, especially for assessment of radiation exposure to human. In the present study, natural radionuclide concentrations of 238U, 232Th, and 40K were measured by gamma spectrometry using HPGe detector in soil samples collected from Southwest coast of Kanyakumari district, Tamil Nadu. The radiological index parameters due to natural radionuclides such as radium equivalent activity, absorbed dose rate, annual effective dose rate, external hazard index, internal hazard index, and gamma index were calculated for the soil samples. All the calculated radiological index values are higher than world average values and the recommended safety limits. Multivariate statistical techniques such as Pearson correlation, principal component analysis, and cluster analysis were applied to know the relation between radionuclides and radiological parameters and to study the spatial distribution of radionuclides.


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