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1. Calibration of Fe XANES for high-precision determination of Fe oxidation state in glasses: Comparison of new and existing results obtained at different synchrotron radiation sources

   https://doi.org/10.2138/am-2017-5822  

   Fiege, Adrian; Ruprecht, Philipp; Simon, Adam C; Bell, Aaron S; Göttlicher, Jörg; Newville, Matt; Lanzirotti, Tony; Moore, Gordon (February 2017, American Mineralogist)
2. Determination of Fe 3+ /ΣFe of XANES basaltic glass standards by Mössbauer spectroscopy and its application to the oxidation state of iron in MORB

   https://doi.org/10.1016/j.chemgeo.2018.01.006  

   Zhang, Hongluo L.; Cottrell, Elizabeth; Solheid, Peat A.; Kelley, Katherine A.; Hirschmann, Marc M. (February 2018, Chemical Geology)
3. Zinc K -edge XANES spectroscopy of mineral and organic standards

   https://doi.org/10.1107/S160057751900540X  

   Castorina, Erin; Ingall, Ellery D.; Morton, Peter L.; Tavakoli, David A.; Lai, Barry (July 2019, Journal of Synchrotron Radiation)

   Zinc K -edge X-ray absorption near-edge (XANES) spectroscopy was conducted on 40 zinc mineral samples and organic compounds. The K -edge position varied from 9660.5 to 9666.0 eV and a variety of distinctive peaks at higher post-edge energies were exhibited by the materials. Zinc is in the +2 oxidation state in all analyzed materials, thus the variations in edge position and post-edge features reflect changes in zinc coordination. For some minerals, multiple specimens from different localities as well as pure forms from chemical supply companies were examined. These specimens had nearly identical K -edge and post-edge peak positions with only minor variation in the intensity of the post-edge peaks. This suggests that typical compositional variations in natural materials do not strongly affect spectral characteristics. Organic zinc compounds also exhibited a range of edge positions and post-edge features; however, organic compounds with similar zinc coordination structures had nearly identical spectra. Zinc XANES spectral patterns will allow identification of unknown zinc-containing minerals and organic phases in future studies. 

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4. Quantifying Uncertainties in Sequential Chemical Extraction of Soil Phosphorus Using XANES Spectroscopy

   https://doi.org/10.1021/acs.est.9b05278  

   Gu, Chunhao; Dam, Than; Hart, Stephen C.; Turner, Benjamin L.; Chadwick, Oliver A.; Berhe, Asmeret Asefaw; Hu, Yongfeng; Zhu, Mengqiang (February 2020, Environmental Science & Technology)
5. Spectroscopic (XANES/XRF) characterization of contaminant manganese cycling in a temperate watershed

   https://doi.org/10.1007/s10533-014-0018-7  

   Herndon, Elizabeth M.; Martínez, Carmen E.; Brantley, Susan L. (December 2014, Biogeochemistry)