Determination of 90Sr traces in medical 90Y after separation on DGA column.

Authors :: Pawlak DW
Parus JL
Dziel T
Muklanowicz A
Mikolajczak R
Source :: Talanta [Talanta] 2013 Sep 30; Vol. 114, pp. 1-4. Date of Electronic Publication: 2013 Apr 09.
Publication Year :: 2013
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.<br /> (Copyright © 2013 Elsevier B.V. All rights reserved.)