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Updated: Jun 24, 2026

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
Published on: June 6, 2018
Validation of rapid methods for the determination of radiostrontium in milk
C K Kim1, A Al-Hamwi, A Törvényi
1Physics, Chemistry and Instrumentation Laboratory, Agency's Laboratories, Seibersdorf and Headquarter, Austria. c.k.kim@iaea.org
Abstract:
A rapid method of (89)Sr and (90)Sr comprising ion chromatography for preconcentration and Sr extraction chromatography for separation of Sr from Ca, Ba and Y was validated with spiked milk samples. An (89)Sr/(90)Sr activity ratio of up to 12 showed the relative bias was within +/-20%. The separation time of Sr was 7h and the chemical recovery of Sr ranged from 80% to 95%. The detection limit for 500 mL milk and 90 min counting time was 0.1 Bq L(-1).
