Abstract
Cherenkov counting of the 90Sr–90Y pure beta emitters in aqueous samples is an attractive method; but color quenching correction is needed, this being especially significant for urine which is characterized by a strong coloration. A quench correction method based on the external source of some liquid scintillation systems (named ESAR—External Source Area Ratio) was proposed for aqueous solutions. In the present work, the application of the ESAR method for determination of 90Sr–90Y in human urine samples is described.
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