title: Determination of (238)U in ground-water samples using gamma-ray spectrometry.
abstract: A method for measuring the low activity concentration of (238)U in water is described. Samples of 50L were evaporated and the dry residue after evaporation was measured. Typically, 30 g of material was obtained for the samples processed in this way. Based on measuring the samples using a gamma-ray spectrometer, equipped with a germanium crystal having a diameter of 8 cm and a beryllium window, the decision threshold resulting from the measurements was assessed to be 1.5 Bq/m(3). A total of 26 samples of ground water were processed and activity concentrations of up to 20 Bq/m(3) were measured. However, most of the results were in a range around 5 Bq/m(3).
authors.affiliation: Jožef Stefan Institute, Jamova cesta 39, Ljubljana, Slovenia. matjaz.korun@ijs.si
authors.forename: M
authors.initials: M
authors.lastname: Korun
authors.forename: K
authors.initials: K
authors.lastname: Kovačič
mesh_terms: D013051:Spectrometry, Gamma / Q000379:methods; D014501:Uranium / Q000032:analysis*; D014867:Water / Q000737:chemistry; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D014875:Water Pollutants, Radioactive; D014867:Water; D014501:Uranium