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Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles
Published on: July 5, 2016
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MAP2XANES: a Jupyter interactive notebook for elemental mapping and XANES speciation.
Carlo Marini1, Josep Roqué-Rosell2, Marc Campeny3
1ALBA Synchrotron, Cerdanyola del Vallès, Barcelona 08290, Spain.
Journal of Synchrotron Radiation
|July 2, 2021
Summary
MAP2XANES is a new Jupyter notebook for analyzing synchrotron X-ray data. It automates the characterization of complex samples, revealing elemental and chemical species distribution with ease.
Area of Science:
- Materials Science
- Geochemistry
- Analytical Chemistry
Background:
- Synchrotron X-ray fluorescence imaging and spectroscopy are powerful tools for material characterization.
- Analyzing complex and heterogeneous samples requires sophisticated data processing techniques.
- Current methods for analyzing X-ray absorption spectroscopy (XAS) data can be time-consuming and complex.
Purpose of the Study:
- To develop an intuitive and automated Jupyter notebook for analyzing synchrotron X-ray fluorescence imaging and X-ray absorption spectroscopy data.
- To simplify the visualization and analysis of elemental maps and space-resolved absorption spectra.
- To determine the chemical species distribution and their spatial localization within complex samples.
Main Methods:
- Developed MAP2XANES, a Jupyter notebook utilizing Numpy, Scipy, Pandas, iPywidgets, and Matplotlib.
- Implemented automated data reduction and visualization of elemental maps and XAS spectra.
- Applied linear combination fitting of XANES spectra to identify and quantify chemical species.
Main Results:
- MAP2XANES successfully automates the analysis of synchrotron X-ray data.
- The notebook provides intuitive visualization of elemental maps and space-resolved spectra.
- Chemical species distribution, specifically Mn2+, Mn3+, and Mn4+ in hausmannite, was accurately determined.
- Correlation between elemental distribution and chemical species localization was established.
Conclusions:
- MAP2XANES offers an efficient and user-friendly approach for characterizing complex heterogeneous samples using synchrotron X-ray techniques.
- The tool facilitates the determination of chemical speciation and elemental distribution, aiding in materials characterization.
- This automated analysis significantly advances the application of XAS and XFI in fields like mineralogy.
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