Atomic spectrometry update – a review of advances in X-ray fluorescence spectrometry and its special applications,Journal of Analytical Atomic Spectrometry

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Atomic spectrometry update – a review of advances in X-ray fluorescence spectrometry and its special applications
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2021-07-15 , DOI: 10.1039/d1ja90033a
Christine Vanhoof _{1,

2,

3} , Jeffrey R. Bacon _{4,

5} , Ursula E. A. Fittschen _{6,

7,

8,

9} , Laszlo Vincze _{3,

10,

11,

12}

Affiliation

That the boundaries of analysis using XRF spectrometry performed at SR sources continues to be pushed back is evidenced by the nanoscale spatial resolution with near single-atom sensitivity for the most efficiently detected elements in nanobeam applications and high speed 2D/3D imaging capabilities. The 4^th generation SR facilities currently under development, such as the ESRF Extremely Brilliant Source (EBS), will be at the forefront of these advances. A clear trend is that SR-XRF spectrometry is increasingly applied with complementary X-ray spectroscopic/imaging techniques to combine spatially resolved elemental information with speciation and structural/morphological imaging. The wide range of applications of scanning (sub)microXRF spectrometry for elemental imaging published in the period covered by this review included biomedical, environmental, materials science and cultural heritage studies. Most applications involved XAS and XRD methods at hard X-ray micro- and nano-probe facilities. Full field microXRF spectrometry has made very promising advances with respect to the optics used. Coded apertures have potential for overcoming the low count rates that often restrict the full potential of laboratory-based full-field setups. The availability of commercial full-field detectors will increase the user community and thereby foster advancement in full field microXRF spectrometry. The TXRF spectrometry of ambient air is becoming more and more sophisticated and the advantages of this micro analytical tool over ICP-MS in terms of short sampling times with high particle size resolution are becoming ever more apparent. For example, the optimal sampling time for aerosols for TXRF analysis was well below 12 hours, whereas that for ICP-MS analysis was about 24 hours. High-quality grazing incidence XRF analysis in the laboratory has become more feasible with the development of prototype TXRF instrumentation and the availability of commercial XRD setups with energy dispersive detectors. Portable XRF spectrometry has undergone significant technological improvements in recent years and is now applied in a wide range of applications. This is reflected in a significant number of valuable review papers dealing with different aspects of the portable XRF technique. The growth in the use of macroXRF scanning systems in cultural heritage investigations has required development of new software and methodologies for efficient handling of the huge data files generated. In several contributions the possibilities of a new scanning station equipped with real time macroXRF spectrometry was demonstrated.

中文翻译：

原子光谱学更新——X 射线荧光光谱学及其特殊应用进展综述

使用在 SR 源进行的 XRF 光谱分析的边界继续被推迟，这可以通过纳米级空间分辨率与纳米束应用中最有效检测元素的接近单原子灵敏度和高速 2D/3D 成像能力来证明。4^日目前正在开发的新一代 SR 设施，例如 ESRF 极亮源 (EBS)，将处于这些进步的最前沿。一个明显的趋势是 SR-XRF 光谱法越来越多地与互补的 X 射线光谱/成像技术结合使用，以将空间分辨的元素信息与物种形成和结构/形态成像相结合。本综述涵盖的时期内发表的扫描（亚）显微 XRF 光谱法在元素成像方面的广泛应用包括生物医学、环境、材料科学和文化遗产研究。大多数应用涉及硬 X 射线微米和纳米探针设施中的 XAS 和 XRD 方法。全场 microXRF 光谱法在所使用的光学器件方面取得了非常有希望的进步。编码孔径有可能克服低计数率，这通常会限制基于实验室的全场设置的全部潜力。商用全场探测器的可用性将增加用户社区，从而促进全场 microXRF 光谱法的进步。环境空气的 TXRF 光谱法变得越来越复杂，这种微型分析工具在采样时间短、粒度分辨率高方面优于 ICP-MS 的优势变得越来越明显。例如，TXRF 分析气溶胶的最佳采样时间远低于 12 小时，而 ICP-MS 分析的最佳采样时间约为 24 小时。随着原型 TXRF 仪器的开发和带有能量色散探测器的商业 XRD 装置的可用性，在实验室中进行高质量的掠入射 XRF 分析变得更加可行。近年来，便携式 XRF 光谱仪经历了重大的技术改进，现在应用范围很广。这反映在涉及便携式 XRF 技术不同方面的大量有价值的评论论文中。在文化遗产调查中使用 macroXRF 扫描系统的增长需要开发新的软件和方法来有效处理生成的巨大数据文件。在一些贡献中，展示了配备实时宏 XRF 光谱仪的新扫描站的可能性。

更新日期：2021-07-15

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