Natural radioactivity concentrations and dose assessment in coastal sediments along the East Coast of Tamilnadu,India with statistical approach |
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| Affiliation: | 1. Department of Physics, Dhivya Arts & Science College, Chetpet, Tamilnadu 606801, India;2. Department of Physics, Aries Arts and Science College for women, Karunkuzhi, Vadalur, Tamilnadu 607 302, India;3. Department of Physics, University College of Engineering Arni, Thatchur, Tamilnadu 632326, India;4. Post Graduate and Research Department of Physics, Government Arts College, Tiruvannamalai, Tamilnadu 606603, India;5. Department of Geology, University of Madras, Guindy Campus, Chennai, Tamilnadu 600025, India;6. Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India;1. Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran;2. Department of Physics, Malek-ashtar University of Technology, Shahin-shahr, Isfahan, Iran |
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| Abstract: | The present study was conducted to determine the activity concentration of 238U, 232Th and 40K in coastal sediments samples from Poombuhar to Karaikal along East coast of Tamilnadu, India using gamma ray spectrometry. The average activity concentration for 238U, 232Th and 40K were obtained as 36.82 (Bq kg−1), 50.11(Bq kg−1) and 320.38 (Bq kg−1), respectively. These obtained results were used to calculate the radiological hazard parameters like radium equivalent activity (Raeq), absorbed gamma dose rate (DR), the annual effective dose equivalent (AEDE), Annual gonadal dose equivalent (AGDE), Activity utilization index (AUI), External hazard index (Hex), Internal hazard index (Hin), Gamma representative level index (RLI) and Excess lifetime cancer risk (ELCR). The computed radiological parameters values are compared with the internationally approved recommended values. The multivariate statistical method is used to simplify and organize large data sets to indicate natural associations between samples and variables. |
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