title: Sequential determination of 210Po and uranium radioisotopes in drinking water by alpha-particle spectrometry.
abstract: Procedures for the sequential determination of low level (210)Po and uranium radioisotopes in drinking water by alpha-particle spectrometry are presented. After addition of (208)Po and (232)U tracers, the radionuclides were preconcentrated from water samples by co-precipitation on Fe(OH)(3) or MnO(2) at pH 9 using ammonia solution. The (210)Po source was prepared by spontaneous deposition onto a copper disc either before or after uranium separation. The uranium source for alpha-particle counting was prepared by micro co-precipitation with CeF(3). The procedures were tested on mineral water and the results obtained are compared.
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel, Belgium. ljudmila.benedik@ijs.si
authors.forename: L
authors.initials: L
authors.lastname: Benedik
authors.forename: M
authors.initials: M
authors.lastname: Vasile
authors.forename: Y
authors.initials: Y
authors.lastname: Spasova
authors.forename: U
authors.initials: U
authors.lastname: Wätjen
mesh_terms: D000512:Alpha Particles; D011232:Chemical Precipitation; D005618:Fresh Water / Q000032:analysis; D011059:Polonium / Q000032:analysis*; D013057:Spectrum Analysis; D014501:Uranium / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D014875:Water Pollutants, Radioactive; D014501:Uranium; D011059:Polonium