Age-dating of Sr-Y beta-sourced

This work describes the developed methods for determining the age of 90Sr-90Y β--source. The paper presents a literary description of the scientific problem, as well as presents two fundamentally different methods for dating radioactive 90Sr-90Y β--source. The first method of age dating of the 90Sr-90Y β--source is based on the chemical separation of 90Sr and 90Zr using 4С-ТіО2 adsorbent. The second method is based on a combination of liquid scintillation counting of 90Sr and ICP-MS analysis. It has been shown that both methods – the method of determining the age with the chemical separation of isotopes and the combination of LSC and ICP-MS analysis can validate each other. Also, both ways can complement each other to perform the age dating of 90Sr-90Y sources more accurately.

本研究阐述了测定90Sr-90Y β--源年龄所开发的方法。论文不仅对科学问题进行了文献描述，而且还提出了两种根本不同的放射性90Sr-90Y β--源年代测定方法。90Sr-90Y β--源年代测定的第一种方法基于利用4C-TiO2吸附剂对90Sr和90Zr进行化学分离。第二种方法则是90Sr的液闪计数与ICP-MS分析相结合。研究表明，这两种方法——利用同位素化学分离确定年龄的方法以及LSC与ICP-MS分析相结合的方法——能够相互验证。此外，这两种途径还可以相互补充，以更精确地完成90Sr-90Y源的年龄测定。