title: Semi-automatic version of the potentiometric titration method for characterization of uranium compounds.
abstract: The potentiometric titration method was used for characterization of uranium compounds to be applied in intercomparison programs. The method is applied with traceability assured using a potassium dichromate primary standard. A semi-automatic version was developed to reduce the analysis time and the operator variation. The standard uncertainty in determining the total concentration of uranium was around 0.01%, which is suitable for uranium characterization and compatible with those obtained by manual techniques.
authors.affiliation: Comissão Nacional de Energia Nuclear (CNEN), Instituto de Radioproteção e Dosimetria (IRD), Avenida Salvador Allende, s/n Recreio dos Bandeirantes 22780-160, Rio de Janeiro, RJ, Brasil. barbara@ird.gov.br
authors.forename: Bárbara F G
authors.initials: BF
authors.lastname: Cristiano
authors.forename: José Ubiratan
authors.initials: JU
authors.lastname: Delgado
authors.forename: José Wanderley S
authors.initials: JW
authors.lastname: da Silva
authors.forename: Pedro D
authors.initials: PD
authors.lastname: de Barros
authors.forename: Radier M S
authors.initials: RM
authors.lastname: de Araújo
authors.forename: Fábio C
authors.initials: FC
authors.lastname: Dias
authors.forename: Ricardo T
authors.initials: RT
authors.lastname: Lopes
mesh_terms: D000465:Algorithms; D001938:Brazil; D006207:Half-Life; D038622:Internationality; D011199:Potentiometry / Q000379:methods* / Q000592:standards; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods* / Q000592:standards*; D012015:Reference Standards; D012016:Reference Values; D012371:Robotics / Q000379:methods* / Q000592:standards; D014501:Uranium / Q000032:analysis* / Q000737:chemistry*
chemical_list: D014501:Uranium