title: Sequential extraction for radionuclide fractionation in soil samples: a comparative study.
abstract: Two sequential extraction procedures, Tessier's method (Anal. Chem. 51(7) (1979) 844), and a current version known as Schultz's method (J. Environ. Radioact. 40(2) (1998) 155), were compared. The two procedures were applied to a natural soil sample that presents high activity concentrations in natural radionuclides of the 238U series. Reproducibility studies of each method and a comparison between the two sets of results were performed for uranium, thorium, and radium. The results were different for each radionuclide. Analysis of the extracted fractions was carried out by alpha spectrometry.
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Blanco
authors.forename: F Vera
authors.initials: FV
authors.lastname: Tomé
authors.forename: J C
authors.initials: JC
authors.lastname: Lozano
mesh_terms: D000512:Alpha Particles; D005591:Chemical Fractionation / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013057:Spectrum Analysis / Q000379:methods*; D014501:Uranium / Q000032:analysis* / Q000145:classification
chemical_list: D012990:Soil Pollutants, Radioactive; D014501:Uranium