title: NATURAL RADIONUCLIDE LEVELS IN SEDIMENTS OF CAUVERY RIVERINE ENVIRONMENT.
abstract: The paper presents the systematic measurement of activity concentrations of40K,226Ra and232Th in sediment sample of Cauvery river of Karnataka, South India. Activity was measured using HpGe gamma ray spectrometer, and the mean values of40K,226Ra and232Th in the sediment samples were found to be 144.31, 32.05 and 61.70 Bq kg-1, respectively. To assess the radiological hazards in the samples, radium equivalent (Raeq), absorbed dose (D), annual effective equivalent dose (AEED), activity utilisation index (AUI) and annual gonadal dose equivalent (AGDE) values associated with the radionuclides were calculated and compared with international recommended values.
authors.affiliation: Department of Studies in Physics, Mangalore University, Mangalagangothri 574 199, India narayanay@yahoo.com.
authors.forename: Y
authors.initials: Y
authors.lastname: Narayana
authors.affiliation: Department of Studies in Physics, Mangalore University, Mangalagangothri 574 199, India.
authors.forename: C S
authors.initials: CS
authors.lastname: Kaliprasad
authors.affiliation: Department of Studies in Physics, Mangalore University, Mangalagangothri 574 199, India.
authors.forename: Ganesh
authors.initials: G
authors.lastname: Sanjeev
mesh_terms: D003252:Construction Materials; D019015:Geologic Sediments / Q000032:analysis*; D007194:India; D011197:Potassium Radioisotopes / Q000032:analysis; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011848:Radioactive Pollutants / Q000032:analysis*; D011868:Radioisotopes / Q000032:analysis*; D011883:Radium / Q000032:analysis; D045483:Rivers; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013051:Spectrometry, Gamma; D013910:Thorium / Q000032:analysis
chemical_list: D011197:Potassium Radioisotopes; D011848:Radioactive Pollutants; D011868:Radioisotopes; D012990:Soil Pollutants, Radioactive; D013910:Thorium; D011883:Radium