Determination of  30 Y,  90 Sr and  89 Sr in samples by use of liquid scintillation beta spectroscopy.
D008722:Methods; D012588:Scintillation Counting; D013057:Spectrum Analysis; D013325:Strontium Isotopes / Q000032:analysis*; D015020:Yttrium Isotopes / Q000032:analysis*
D013325:Strontium Isotopes; D015020:Yttrium Isotopes