title: Aspects of sample preparation for the determination of actinoids in soil.
abstract: In the frame of the re-certification measurements of the IAEA-375 soil reference material the activity concentration of four actinoids (U, Th, Pu and Am) was determined. The method is based on microwave digestion or aqua regia leaching, separation by extraction chromatography and alpha-particle counting source preparation by co-precipitation or electro-deposition. This article describes some of the problems encountered during the validation of the sample preparation method and their solutions.
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg, Geel B-2440, Belgium.
authors.forename: C
authors.initials: C
authors.lastname: Hill
authors.forename: M
authors.initials: M
authors.lastname: Bickel
authors.forename: L
authors.initials: L
authors.lastname: Holmes
authors.forename: A
authors.initials: A
authors.lastname: Bohnstedt
authors.forename: G
authors.initials: G
authors.lastname: Sibbens
authors.forename: T
authors.initials: T
authors.lastname: Altzitzoglou
mesh_terms: D008671:Actinoid Series Elements / Q000032:analysis / Q000592:standards*; D002845:Chromatography / Q000379:methods / Q000592:standards; D004784:Environmental Monitoring / Q000379:methods / Q000592:standards; D005062:European Union; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012990:Soil Pollutants, Radioactive / Q000032:analysis* / Q000592:standards; D013048:Specimen Handling / Q000379:methods* / Q000592:standards*; D013057:Spectrum Analysis / Q000379:methods* / Q000592:standards*
chemical_list: D008671:Actinoid Series Elements; D012990:Soil Pollutants, Radioactive