DOI: 10.1016/j.marpolbul.2015.05.058
Scopus记录号: 2-s2.0-84956582855
论文题名: Assessments of radioactivity concentration of natural radionuclides and radiological hazard indices in sediment samples from the East coast of Tamilnadu, India with statistical approach
作者: Ravisankar R. ; Chandramohan J. ; Chandrasekaran A. ; Prince Prakash Jebakumar J. ; Vijayalakshmi I. ; Vijayagopal P. ; Venkatraman B.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 97, 期: 2018-01-02 起始页码: 419
结束页码: 430
语种: 英语
英文关键词: Gamma ray spectrometry
; Multivariate statistical analysis
; Natural radioactivity
; Radiological parameters
; Sediment
Scopus关键词: Cluster analysis
; Correlation methods
; Gamma ray spectrometers
; Gamma rays
; Hazards
; Health risks
; Hierarchical systems
; Multivariant analysis
; Radiation
; Radiation hazards
; Radioactivity
; Radioisotopes
; Radiometry
; Sediments
; Gamma ray spectrometry
; Hierarchical cluster analysis
; Mean activity concentrations
; Multivariate statistical analysis
; Natural radioactivity
; Radioactivity concentration
; Radiological parameters
; Radium equivalent activity
; Principal component analysis
; potassium 40
; thorium 232
; uranium 238
; dangerous goods
; potassium
; radioisotope
; thorium
; uranium
; coastal sediment
; concentration (composition)
; gamma ray spectrometry
; marine pollution
; multivariate analysis
; pollution monitoring
; radioactivity
; radionuclide
; Article
; cancer risk
; cluster analysis
; concentration (parameters)
; correlation coefficient
; gamma spectrometry
; health hazard
; India
; natural radioactivity
; principal component analysis
; radiation dose
; radiation hazard
; radiation measurement
; radiation monitoring
; radiation safety
; radioactive contamination
; risk assessment
; sediment
; water contamination
; water sampling
; analysis
; chemistry
; dangerous goods
; ionizing radiation
; procedures
; radiation monitoring
; statistics and numerical data
; India
; Tamil Nadu
; Background Radiation
; Cluster Analysis
; Geologic Sediments
; Hazardous Substances
; India
; Potassium Radioisotopes
; Principal Component Analysis
; Radiation Monitoring
; Radioisotopes
; Spectrometry, Gamma
; Thorium
; Uranium
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: This paper reports on the distribution of three natural radionuclides 238U, 232Th and 40K in coastal sediments from Pattipulam to Devanampattinam along the East coast of Tamilnadu to establish baseline data for future environmental monitoring. Sediment samples were collected by a Peterson grab samples from 10m water depth parallel to the shore line. Concentration of natural radionuclides were determined using a NaI(Tl) detector based γ-spectrometry. The mean activity concentration is ≤2.21, 14.29 and 360.23Bqkg-1 for 238U, 232Th and 40K, respectively. The average activity of 232Th, 238U and 40K is lower when compared to the world average value. Radiological hazard parameters were estimated based on the activity concentrations of 238U, 232Th and 40K to find out any radiation hazard associated with the sediments. The radiological hazard parameters such as radium equivalent activity (Raeq), absorbed gamma dose rates in air (D R), the annual gonadal dose equivalent (AGDE), annual effective dose equivalent (AEDE), external hazard index (H ex) internal hazard index (H in), activity utilization index (AUI) and excess lifetime cancer (ELCR) associated with the radionuclides were calculated and compared with internationally approved values and the recommended safety limits. Pearson correlation, principal component analysis (PCA) and hierarchical cluster analysis (HCA) have been applied in order to recognize and classify radiological parameters in sediments collected at 22 sites on East coast of Tamilnadu. The values of radiation hazard parameters were comparable to the world averages and below the recommended values. Therefore, coastal sediments do not to pose any significant radiological health risk to the people living in nearby areas along East coast of Tamilnadu. The data obtained in this study will serve as a baseline data in natural radionuclide concentration in sediments along the coastal East coast of Tamilnadu. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86140
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: PG and Research Department of Physics, Government Arts College, Thiruvannamalai, Tamil Nadu, India; Department of Physics, E.G.S. Pillay Engineering College, Nagapattinam, Tamil Nadu, India; Department of Physics, SSN College of Engineering, Kalavakkam, Chennai, Tamil Nadu, India; Coastal and Environmental Engineering, National Institute of Ocean Technology, Pallikaranai, Chennai, Tamil Nadu, India; Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India
Recommended Citation:
Ravisankar R.,Chandramohan J.,Chandrasekaran A.,et al. Assessments of radioactivity concentration of natural radionuclides and radiological hazard indices in sediment samples from the East coast of Tamilnadu, India with statistical approach[J]. Marine Pollution Bulletin,2015-01-01,97(2018-01-02)