title: Determination of 90Sr traces in medical 90Y after separation on DGA column.
abstract: A new analytical procedure for (90)Sr determination in freshly milked (90)Y from a (90)Sr/(90)Y generator is described. To a solution containing 125 mg of Sr a 200 to 400 MBq sample of (90)Y is added and strontium is separated from (90)Y using DGA column of 1 mL volume. (90)Sr is recovered in a yield close to 100% and counted in a liquid scintillation spectrometer (LSC). The separated strontium is slightly contaminated with (90)Y in the range from 7 to 19% of (90)Sr activity. The separation and counting can be completed within 30 min. The detection limit in 900 s counting time is equal to about 0.2 Bq. This corresponds to (90)Sr/(90)Y activity ratio of 10(-8) level.
authors: Radioisotope Centre POLATOM, National Centre for Nuclear Research, Otwock, Poland. d.pawlak@polatom.pl
authors: Dariusz W
authors: DW
authors: Pawlak
authors: Jozef L
authors: JL
authors: Parus
authors: Tomasz
authors: T
authors: Dziel
authors: Anna
authors: A
authors: Muklanowicz
authors: Renata
authors: R
authors: Mikolajczak
mesh_terms: D002845:Chromatography / Q000379:methods; D006016:Glycolates; D011878:Radiotherapy; D013326:Strontium Radioisotopes / Q000032:analysis*; D015021:Yttrium Radioisotopes / Q000737:chemistry*
chemical_list: D006016:Glycolates; D013326:Strontium Radioisotopes; D015021:Yttrium Radioisotopes; C520173:tetra-n-octyldiglycolamide
keywords: (90)Sr; (90)Y; DGA resin; Solid phase extraction