Bugarin Luca, Suarez Orduz Hugo Alexander, Glatzel Pieter
ESRF - The European Synchrotron, 71 Avenue des Martyers, 38000 Grenoble, France.
J Synchrotron Radiat. 2024 Sep 1;31(Pt 5):1118-1125. doi: 10.1107/S1600577524005307. Epub 2024 Aug 6.
The normalization of X-ray absorption near-edge structure (XANES) spectra is required for comparing spectral features and extracting quantitative information in analytical techniques such as linear combination analysis, principal component analysis and multivariate curve resolution. Most published data are normalized to the edge-jump, but normalization to the spectral area has also been applied. The latter is particularly attractive if only a small energy range around the absorption can be recorded reliably. Here, the two normalization methods are compared at the L-edge of Pt, Pd and Rh, and at the Ni K-edge using experimental and calculated spectra. Normalization to the spectral area is found to be a viable approach if the range for the area normalization is sufficiently large.
在诸如线性组合分析、主成分分析和多元曲线分辨等分析技术中，为了比较光谱特征并提取定量信息，需要对X射线吸收近边结构（XANES）光谱进行归一化处理。大多数已发表的数据是根据边跳进行归一化的，但也有应用光谱面积归一化的情况。如果只能可靠记录吸收峰周围的一小部分能量范围，那么后者就特别有吸引力。在此，使用实验光谱和计算光谱，在Pt、Pd和Rh的L边以及Ni K边对这两种归一化方法进行了比较。如果面积归一化的范围足够大，那么光谱面积归一化是一种可行的方法。
