Author/Authors :
Pawlak، نويسنده , , Dariusz W. and Parus، نويسنده , , Jozef L. and Dziel، نويسنده , , Tomasz and Muklanowicz، نويسنده , , Anna and Mikolajczak، نويسنده , , Renata، نويسنده ,
Abstract :
A new analytical procedure for 90Sr determination in freshly milked 90Y from a 90Sr/90Y generator is described. To a solution containing 125 mg of Sr a 200 to 400 MBq sample of 90Y is added and strontium is separated from 90Y using DGA column of 1 mL volume. 90Sr is recovered in a yield close to 100% and counted in a liquid scintillation spectrometer (LSC). The separated strontium is slightly contaminated with 90Y in the range from 7 to 19% of 90Sr 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 90Sr/90Y activity ratio of 10−8 level.
Keywords :
90Y , 90Sr , Solid phase extraction , DGA resin
