Progress of Synchrotron Radiation X-Ray Fluorescence Spectrometry in China and Overseas

Synchrotron radiation source is the radiation emitted along the tangent direction of the orbit when the charged particles move in the storage ring of the accelerator at speed close to the speed of light. Synchrotron radiation X-ray fluorescence analysis (SR-XRF) is an X-ray fluorescence spectrum analysis technique using synchrotron radiation X-ray as the excitation source. Synchrotron radiation X-ray fluorescence analysis includes a variety of methods, synchrotron radiation XRF can be used in the micro area and trace elements analysis, total reflection X-ray fluorescence synchrotron radiation (SR-TXRF) used in the surface and film analysis, synchrotron radiation X-ray fluorescence scanning and imaging methods (such as X-ray fluorescence CT, X-ray fluorescence full-field imaging, confocal X-ray fluorescence and grazing exit X-ray fluorescence, etc.) used for three-dimensional nondestructive analysis. X-ray fluorescence spectrometry provides a means of identifying an element, by measuring its characteristic X-ray emission wavelength or energy. The method allows the quantification of a given element by first measuring the emitted characteristic line intensity and then relating this intensity to elemental concentration. The synchrotron radiation X-ray fluorescence spectrum has high brightness, tunability, good coherence, collimation and polarization. It can be used to analyze the content and spatial distribution of elements in samples. In recent years, with the application of new technology, the upgrading of analysis software, and the development of quantitative analysis methods, synchronous X-ray fluorescence spectroscopy technology has been promoted. By adopting new X-ray optical elements and detectors, the resolution and detection efficiency has been greatly improved, and the development of related disciplines has been promoted. The development of synchrotron radiation X-ray fluorescence spectrometry and its application in China and overseas in recent yearsare introduced. At the same time, the typical beamline technology development and its applications in biomedicine, environmental science, geological science, archaeology, material science, physics and chemistry are described. The review has certain reference significance for experts and scholars in this field and related fields to understand the development status and application research results of synchrotron radiation technology in China and overseas.