Yoshii Hiroshi, Matsuyama Tsugufumi, Nagai Hiroki, Sakai Yasuhiro
National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Chiba, Chiba, 263-8555, Japan.
Department of Physics, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan.
Anal Sci. 2025 Mar 27. doi: 10.1007/s44211-025-00751-7.
The detection of nuclear materials is crucial in cases of potential leaks or accidents; however, transporting samples out of such locations may be challenging, necessitating on-site analysis. While total reflection X-ray fluorescence (TXRF) analysis is a highly useful method for determining nuclides with long half-lives, such as uranium isotopes, no commercially available portable TXRF spectrometers can currently operate without an external power source, which may not always be accessible on-site. In this study, we modified the design of a commercially available portable TXRF spectrometer to develop a battery-powered device, enabling TXRF analysis outdoors and in locations without an external power supply. To test the applicability of the device, we analyzed the uranium content in a sample solution, using yttrium as an internal standard. The relative sensitivity coefficient was the same as that of the commercial spectrometer but the limit of detection was deteriorated. Addressing the equipment issues identified in this study is expected to enable efficient and rapid on-site TXRF analysis.
在潜在泄漏或事故情况下，核材料的检测至关重要；然而，将样品从此类场所运出可能具有挑战性，因此需要进行现场分析。虽然全反射X射线荧光（TXRF）分析是确定长半衰期核素（如铀同位素）的一种非常有用的方法，但目前没有可商购的便携式TXRF光谱仪能够在没有外部电源的情况下运行，而现场可能并不总是能够获得外部电源。在本研究中，我们对一款可商购的便携式TXRF光谱仪的设计进行了改进，开发出一种电池供电的设备，使其能够在户外和没有外部电源的场所进行TXRF分析。为了测试该设备的适用性，我们以钇作为内标分析了样品溶液中的铀含量。相对灵敏度系数与商用光谱仪相同，但检测限有所恶化。解决本研究中发现的设备问题有望实现高效、快速的现场TXRF分析。
