view article
Figure 3
Assorted imaging results for a representative parallel-flow device. (a) Brightfield (left) and Fe Kα (right) maps show the extent of Fe precipitates in the device as a result of alternating the channels of Fe injection. (b) A series of 5 µm resolution fluorescence maps for Br Kα, Fe Kα and As Kα are shown for the small region outlined in green in panel (a). Fluorescence results are given in counts normalized to the incident X-ray energy, I0. (c) Results from ME mapping a subregion of the mapped regions in panel (b) over the major reaction stages. Arsenic speciation shifts from a mixed AsV and AsIII to predominantly AsIII as As is flushed and then sulfide injected. The values of fluorescence in the solid pores were approximately 1 × 10−4 for Fe maps, 5 × 10−5 for As maps and 1 × 10−4 for Br maps, which are similar to the background values in Fig. 2[link].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 2| March 2021| Pages 461-471
https://doi.org/10.1107/S1600577520016239
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