Chemical Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, 37830 Oak Ridge, TN, USA.
Chemical Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, 37830 Oak Ridge, TN, USA.
Talanta. 2019 Jun 1;198:257-262. doi: 10.1016/j.talanta.2019.02.034. Epub 2019 Feb 6.
The analysis of environmental swipe samples for ultra-trace uranium (U) and plutonium (Pu) determinations is essential in the nuclear safeguards community. While mass spectrometry techniques for U and Pu detection continually improve, established separation methods are seldom reevaluated. Currently, actinide separations within the forensics community predominantly employ either Eichrom TEVA® or UTEVA® resins. The direct optimization of U and Pu separations utilizing both resins has not been widely reported. Here, several methods were explored with goals of increasing analyte recovery, acquiring cleaner blanks, and improving the separation efficiency of ultra-trace levels of U and Pu from environmental swipe samples. The optimized separation methodology of U and Pu was examined using certified reference materials and archived environmental swipe samples.
对环境擦拭样品中痕量铀 (U) 和钚 (Pu) 的分析在核保障领域至关重要。虽然用于 U 和 Pu 检测的质谱技术在不断改进，但已建立的分离方法很少被重新评估。目前，法医界中主要采用 Eichrom TEVA® 或 UTEVA® 树脂进行锕系元素分离。广泛报道的利用这两种树脂直接优化 U 和 Pu 分离的方法并不多。在这里，探索了几种方法，目的是提高分析物的回收率，获得更清洁的空白，并提高从环境擦拭样品中痕量 U 和 Pu 的分离效率。使用经过认证的参考材料和存档的环境擦拭样品来检验 U 和 Pu 的优化分离方法。
