Tsroya S, Dolgin B, German U, Pelled O, Alfassi Z B
Nuclear Research Center Negev, P.O.B. 9001, 84190 Beer Sheva, Israel.
Appl Radiat Isot. 2013 Dec;82:332-9. doi: 10.1016/j.apradiso.2013.09.012. Epub 2013 Oct 3.
Cherenkov counting of the ⁹⁰Sr/⁹⁰Y pure beta emitters is an attractive method for ⁹⁰Sr activity determination, but the color quenching effect may be significant, especially for strongly colored or semi-opaque media. A quench correction method based on the external source of some liquid scintillation systems (named ESAR - external source area ratio) was proposed and checked for aqueous solutions and was proved to be effective also for urine samples. In the present work, the application of the ESAR method for fast determination of ⁹⁰Sr/⁹⁰Y activity in milk samples is described.
切伦科夫计数法用于测定⁹⁰Sr/⁹⁰Y纯β发射体，是一种颇具吸引力的⁹⁰Sr活度测定方法，但颜色淬灭效应可能很显著，尤其是对于颜色深或半透明的介质。有人提出了一种基于某些液体闪烁系统外部源的淬灭校正方法（称为ESAR - 外部源面积比），并在水溶液中进行了检验，结果证明该方法对尿液样本也有效。在本研究中，描述了ESAR方法在快速测定牛奶样本中⁹⁰Sr/⁹⁰Y活度方面的应用。
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