view article
Figure 6
(a) Sample employed for the hyperspectral XANES mapping and, inside it, field of view probed by the X-ray beam. (b) Schematic representation of the method employed. (c) Spatial distributions and XANES spectra, extracted by MCR-ALS, corresponding to the two pure species present in the sample, which are compared with the XANES spectra corresponding to the individual membrane chunck exposed to the 100% Cr(III) or Cr(VI) solution, collected at the bulk scale and at the end of the hyperspectral experiment. (d) Relative amounts of Cr(III) and Cr(VI) present in the sample estimated using this technique, with associated error bars corresponding to the standard deviation around the mean. These values should be considered preliminary, as the quantification depends on empirical intensity-correction steps that have not been independently validated.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 4| July 2026|
https://doi.org/10.1107/S1600577526004789
Follow J. Synchrotron Rad.
Sign up for e-alerts
E-alerts
Follow J. Synchrotron Rad. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS