同步辐射X射线荧光光谱国内外研究进展

同步辐射光源是带电粒子在加速器储存环中以接近光速的速度运动时，沿轨道切线方向发射出的辐射，同步辐射X射线荧光分析（SR-XRF）是以同步辐射X射线作为激发光源的X荧光光谱分析技术。同步辐射X射线荧光分析包括了用于微区及微量元素分析的同步辐射XRF、用于表面及薄膜分析的同步辐射全反射X射线荧光（SR-TXRF）以及用于三维无损分析的同步辐射X射线荧光扫描和成像方法（如X射线荧光CT、X射线荧光全场成像、共聚焦X射线荧光和掠出射X射线荧光等）。X射线荧光光谱法通过测量元素的特征X射线发射波长或能量，识别元素，该方法首先通过测量发射的特征线强度，然后将该强度与元素浓度联系起来，对给定元素进行量化分析。X射线荧光光谱技术可以进行多元素同时分析，同步辐射X射线荧光谱亮度高，可调谐，相干性、准直性及偏振性好，可以用于分析样品元素的含量和空间分布。近些年来随着新光源技术的使用、分析软件的更新换代和定量分析方法的发展，对同步X射线荧光光谱分析产生了极大促进，采用新型X射线光学元件和探测器，能极大提升分辨率和探测效率，促进相关学科应用的发展。介绍了近几年来国内外同步辐射X射线荧光光谱分析技术及其应用发展状况，给出了国内外比较典型的同步辐射X射线荧光光谱分析光束线站最新技术方面的发展概况，并列举了一些典型应用成果，例如在生物医学、环境科学、地质考古、材料科学和物理及化学等领域的应用。对于本领域及相关领域的专家学者了解国内外同步辐射技术发展现状、应用研究成果具有一定的参考意义。

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.