Validation of rapid methods for the determination of radiostrontium in milk.
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).
Kim
C K
CK
Physics, Chemistry and Instrumentation Laboratory, Agency's Laboratories, Seibersdorf and Headquarter, Austria. c.k.kim@iaea.org
Al-Hamwi
A
A
Törvényi
A
A
Kis-Benedek
G
G
Sansone
U
U
D000818:Animals; D001465:Barium Radioisotopes / Q000032:analysis; D002845:Chromatography / Q000379:methods; D008722:Methods; D008892:Milk / Q000737:chemistry*; D013326:Strontium Radioisotopes / Q000032:analysis*; D015019:Yttrium / Q000032:analysis
D001465:Barium Radioisotopes; D013326:Strontium Radioisotopes; D015019:Yttrium