title: Separation technique for the determination of ⁹⁹Tc in milk and dairy products in case of emergency.
abstract: A method for the determination of (99)Tc (T1/2: 2.1 × 10(5)a) in milk and dairy products is presented in detail. The method includes the separation of fat and proteins from milk, the separation of Tc by anion exchange from other metals and the purification of Tc by extraction chromatography with subsequent measurement using LSC. A recommendation is given on how to use rhenium as a carrier for this particular matrix. The full analysis is done in 24h. The detection limit for milk is 0.2 Bq/l.
authors.affiliation: Federal Office for Radiation Protection-BfS (DE), Ingolstädter Landstr. 1, 85764 Oberschleissheim, Germany. ekabai@bfs.de
authors.forename: E
authors.initials: E
authors.lastname: Kabai
authors.forename: M
authors.initials: M
authors.lastname: Beyermann
authors.forename: J
authors.initials: J
authors.lastname: Seeger
authors.forename: B T
authors.initials: BT
authors.lastname: Savkin
authors.forename: S
authors.initials: S
authors.lastname: Stanglmaier
authors.forename: L
authors.initials: L
authors.lastname: Hiersche
mesh_terms: D000818:Animals; D005591:Chemical Fractionation / Q000379:methods*; D003611:Dairy Products / Q000032:analysis*; D005504:Food Analysis / Q000379:methods*; D005507:Food Contamination, Radioactive / Q000032:analysis*; D008892:Milk / Q000737:chemistry*; D018788:Radioactive Hazard Release; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013048:Specimen Handling / Q000379:methods; D013667:Technetium / Q000032:analysis*
chemical_list: D013667:Technetium
keywords: (99)Tc; Dairy products; LSC; Milk; Rhenium carrier; Technetium