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Effect of natural radioactivity along the southern coastal area of Tamil Nadu with statistical approach
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Effect of natural radioactivity along the southern coastal area of Tamil Nadu with statistical approach
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Journal Article
Effect of natural radioactivity along the southern coastal area of Tamil Nadu with statistical approach
2024
Overview
Natural radioactivity was assessed in sediment samples collected along southern coastline of Tamil Nadu. Average activity concentrations of
238
U,
232
Th, and
40
K were determined (29 ± 3, 218 ± 6, and 80 ± 5 Bq kg
–1
, respectively). Calculated parameters included radium equivalent activity (347 ± 12 Bq kg
–1
), absorbed dose rate (273 ± 10 nGy h
–1
), annual effective dose rate (0.33 ± 0.01 mSv y
–1
), external hazard index (0.94 ± 0.03), annual gonadal dose equivalent (1026 ± 35 mSv y
–1
), and excess lifetime cancer risk (1.17 ± 0.03). Multivariate statistical analyses were employed to examine correlations among the radioactive variables. The presence of heavy minerals in the samples was confirmed using X-ray diffraction.
