论文部分内容阅读
利用萃取色层法从样品基体和大量的干扰核素中分离90Sr,已经被证明是一种行之有效的方法。市售的Sr-SpecTM树脂是一种负载冠醚的浸渍树脂,其萃取剂为二(特丁基环己基)-18-冠-6,支持体为AmberliteXAD-7树脂。冠醚分子与XAD-7以范德华力结合,在高流速和强酸性条件下
The separation of 90Sr from the sample matrix and a large number of interfering nuclides by using extraction chromatography has proven to be an effective method. The commercially available Sr-SpecTM resin is a crown-loaded impregnating resin having an extractant of bis (butylcyclohexyl) -18-crown-6 and a support of Amberlite XAD-7 resin. Crown ether molecules bind to van der Waals forces with XAD-7 at high flow rates and strongly acidic conditions