title: A sequential method for the determination of 210Pb, 226Ra, and uranium and thorium radioisotopes by LSC and alpha-spectrometry.
abstract: A procedure for the determination of (210)Pb, and alpha-emitting radioisotopes of uranium, thorium, and radium from the same aliquot of a sample has been proposed. The key step consisted in the recovery of Pb(II) and Ra by precipitation of insoluble Pb(NO(3))(2), the uranium and thorium radioisotopes remaining in solution. Afterwards, the fractions were handled by specific, well consolidated procedures. Lead-210 was determined by the LSC technique while the uranium, thorium, and radium radioisotopes were measured with silicon alpha-spectrometers. The procedure was applied to a reference sample and several environmental samples obtaining satisfactory results.
authors.affiliation: Departamento de Fisica Fundamental, Facultad de Ciencias, Universidad de Salamanca, Salamanca, Spain.
authors.forename: J C
authors.initials: JC
authors.lastname: Lozano
authors.forename: F Vera
authors.initials: FV
authors.lastname: Tomé
authors.forename: P Blanco
authors.initials: PB
authors.lastname: Rodríguez
authors.forename: C
authors.initials: C
authors.lastname: Prieto
mesh_terms: D000465:Algorithms; D000512:Alpha Particles; D045424:Complex Mixtures / Q000032:analysis*; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis*; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D045424:Complex Mixtures; D011868:Radioisotopes