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Simultaneous 137Cs and 90Sr/90Y detection in water on an LS counter: A quick response in a case of radiation emergency
Radiation Physics and Chemistry ( IF 2.9 ) Pub Date : 2024-04-16 , DOI: 10.1016/j.radphyschem.2024.111766
Ivana Stojković , Nataša Todorović , Jovana Nikolov , Snežana Papović , Slobodan Gadžurić , Milan Vraneš

This research investigates the possibility to simultaneously measure Cs and Sr/Y content in water by Liquid Scintillation Counter Quantulus 1220. The method relies on the Cherenkov counting and does not require sample pre-treatment. During nuclear emergencies, a potential radioactive release should be promptly detected, and this technique ensures measurement results 2 h after the sample's arrival to the laboratory. Cs and Sr/Y concentrations were determined with and without 1-butyl-3-methylimidazolium salicylate ionic liquid's addition, which increased detection efficiency via wavelength-shifting mechanism. The results of analysis were obtained with relative deviations up to 70% from the true activities without IL's addition, but their accuracy was improved (with relative deviations up to 40%) after the addition of 1 g of ionic liquid to the counting vials.

中文翻译:

在 LS 计数器上同时检测水中的 137Cs 和 90Sr/90Y:辐射紧急情况下的快速响应

本研究探讨了使用液体闪烁计数器Quantulus 1220同时测量水中Cs和Sr/Y含量的可能性。该方法依赖于切伦科夫计数,不需要样品预处理。在核紧急情况下,应及时检测潜在的放射性释放,该技术可确保样品到达实验室后2小时即可得到测量结果。在添加和不添加 1-丁基-3-甲基咪唑鎓水杨酸盐离子液体的情况下测定 Cs 和 Sr/Y 浓度,这通过波长移位机制提高了检测效率。不添加IL时,分析结果与真实活性相对偏差高达70%,但在计数瓶中添加1 g离子液体后,分析结果的准确性得到提高(相对偏差高达40%)。
更新日期:2024-04-16
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