Visualizing Sulfur with X-rays: From Molecules to Tissues
Visualizing Sulfur with X-rays: From Molecules to Tissues
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用 X 射线可视化硫：从分子到组织
DOI：
10.1080/10426507.2019.1602618
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
and Eric Block
中科院分区：
文献类型：
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作者：
Graham N. George;Ingrid J. Pickering;Julien J. H. Cotelesage;Linda I. Vogt;Natalia V. Dolgova;Nathan Regnier;Dimosthenis Sokaras;Thomas Kroll;Eileen Y. Sneeden;Mark J. Hackett;Kei Goto;and Eric Block
硫有时被称为光谱上沉默的元素，因为探测其化学性质的工具太少了。本文将以作者的研究为例，综述如何使用硫k边x射线吸收光谱和相关方法来克服这一限制。来自同步辐射源的x射线提供了研究各种系统中的任何元素的手段，从纯化合物到复杂混合物，甚至结构化系统，如生物组织。我们表明，硫k边x射线吸收光谱在一系列系统中提供了硫化学的重要光谱探针，包括那些含有活性物质的系统。使用微聚焦x射线束，化学依赖的x射线荧光成像可用于从微观到宏观的各种空间分辨率下对不同的硫物种进行成像。在未来的研究中，将使用一套统称为先进x射线光谱学的方法来提高灵敏度和更深入地了解电子结构。
Sulfur is sometimes called a spectroscopically silent element because there are so few tools for probing its chemistry. This paper will review how sulfur K-edge X-ray absorption spectroscopy and related methods can be used to overcome this limitation, using examples from the authors’ research. X-rays from synchrotron radiation sources provide the means to study essentially any element in a variety of systems, ranging from pure compounds, to complex mixtures and even structured systems such as biological tissues. We show that sulfur K-edge X-ray absorption spectroscopy provides an important spectroscopic probe of sulfur chemistry in a range of systems, including those containing reactive species. Using a micro-focused X-ray beam, chemically-dependent X-ray fluorescence imaging can be used to image different sulfur species at a variety of spatial resolutions from microscopic to macroscopic. Increased sensitivity and deeper insights into electronic structure will be available in future studies using a suite of methods that are collectively known as advanced X-ray spectroscopy.