Related Experiment Video
Updated: May 15, 2026

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
Published on: June 6, 2018
Determination of 90Sr-90Y activity in urine samples by using Cherenkov counting
Abstract:
Cherenkov counting of the (90)Sr-(90)Y 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 (90)Sr-(90)Y in human urine samples is described.
Related Concept Videos
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Fundamental Principles of PET
Determination of Crystal Structures
Radioactive Decay and Radiometric Dating

