| Summary: | The Bioaccumulation studies of natural radionuclides such as 210Po & 210Pb was carried out to explain the radiation levels of Kasimedu fishing harbour, Chennai, southeast coast of India. Abiotic components like water, sediment and biotic components (Fish species: Synagris japonicas, Megalapsis cordyla, Engraulis indicus and Sciaena aneus) crustaceans (Shrimp species: Fenneropenaeus indicus and Fenneropenaeus monodon; Crab species: Scylla serrata and Portunus sanguinolentus), were taken as experimental samples. The observed concentration of natural radionuclide 210Po was 3.6 mBq·L−1, and 210Pb was 1.90 m mBq·L−1 in the water samples of Kasimedu fishing harbour and the concentration of 210Po was 21.3 Bq kg−1 and 210Pb was 35.7 Bq kg−1 in sediment samples. The higher accumulation rates of 210Po & 210Pb were observed in crustacean crab species Scylla serrata than in other biotic samples shows that, it can be used as a bioindicator for radionuclides in the Kasimedu fishing harbour. The concentration factor of 210Po ranged from 6.5 × 103 to 9.3 × 105 but for 210Pb ranged from 3.8 × 103 to 4.8 × 105. The acquired effective dose for population was calculated and the results were discussed in the range from 30.1 to 630.8 μSv/year for 210Po and 22.7–287.5 μSv/year for 210Pb. Keywords: Kasimedu fishing harbour, Natural radionuclides, Concentration factor, Seafood
|
|---|
