title: Natural radioactivity levels in lake sediment samples.
abstract: The radioactivity concentrations of nuclides (238)U, (232)Th and (40)K in lake sediments collected from 15 different stations at Altınkaya dam lake and 12 different stations at Derbent dam lake in Turkey were measured using high-resolution gamma-ray spectrometry. The measurement was done using a coaxial HPGe detector system coupled to the Ortec-Dspect jr digital MCA system. The average measured activity concentrations of the nuclides (238)U, (232)Th and (40)K were found to be 19.5, 27.7 and 460 Bq kg(-1) in Altınkaya dam, whereas the activity concentrations were 18.8, 25.5 and 365 Bq kg(-1) in Derbent dam, respectively. The measured activity concentrations in the present study have been compared with similar measurements from different locations in the world.
authors.affiliation: Physics Department, Ondokuz Mayıs Üniversity, Education Faculty, Kurupelit, Samsun, Turkey.
authors.forename: Hakan
authors.initials: H
authors.lastname: Eroğlu
authors.forename: Önder
authors.initials: Ö
authors.lastname: Kabadayi
mesh_terms: D001417:Background Radiation; D019015:Geologic Sediments / Q000032:analysis*; D060106:Lakes; D011197:Potassium Radioisotopes / Q000032:analysis; D011829:Radiation Dosage; D011834:Radiation Monitoring; D011883:Radium / Q000032:analysis; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013910:Thorium / Q000032:analysis; D014421:Turkey; D014501:Uranium / Q000032:analysis
chemical_list: D011197:Potassium Radioisotopes; D012990:Soil Pollutants, Radioactive; D014501:Uranium; D013910:Thorium; D011883:Radium