title: Uncertainties in 63Ni and 55Fe determinations using liquid scintillation counting methods.
abstract: The implementation of (63)Ni and (55)Fe determination methods in an environmental laboratory implies their validation. In this process, the uncertainties related to these methods should be analysed. In this work, the expression of the uncertainty of the results obtained using separation methods followed by liquid scintillation counting is presented. This analysis includes the consideration of uncertainties coming from the different alternatives which these methods use as well as those which are specific to the individual laboratory and the competency of its operators in applying the standard ORISE (Oak Ridge Institute for Science and Education) methods.
authors.affiliation: Departamento de Ingeniería Nuclear y Mećanica de Fluidos, University of the Basque Country (UPV/EHU), Alda. Urquijo s/n 48013 Bilbao, Spain. m.herranz@ehu.es
authors.forename: M
authors.initials: M
authors.lastname: Herranz
authors.forename: R
authors.initials: R
authors.lastname: Idoeta
authors.forename: A
authors.initials: A
authors.lastname: Abelairas
authors.forename: F
authors.initials: F
authors.lastname: Legarda
mesh_terms: D038622:Internationality; D007504:Iron Radioisotopes / Q000032:analysis* / Q000737:chemistry*; D009532:Nickel / Q000032:analysis* / Q000737:chemistry*; D011829:Radiation Dosage; D012015:Reference Standards; D012016:Reference Values; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000379:methods* / Q000592:standards*; D012680:Sensitivity and Specificity
chemical_list: D007504:Iron Radioisotopes; D009532:Nickel