Iron speciation in soda lime silica glass: a comparison of XANES and UV-vis-NIR spectroscopy

Andrea Ceglia, Gert Nuyts, Wendy Meulebroeck, Simone Cagno, Alberta Silvestri, Alfonso Zoleo, Karin Nys, Koen Janssens, Hugo Thienpont, Herman Terryn, Karel Lemmens

Research outputpeer-review


It is known that the the control of redox conditions in glass have a strong implication on its final hue, because it affects the Fe2+/Fe-tot ratio. Therefore, an increasing number of studies have been published in recent years by means of synchrotron based X-ray absorption spectroscopy. This is a technique that is not directly accessible and requires dedicated facilities. In this paper we describe an alternative approach by means of optical absorption spectroscopy. We synthesized 10 soda-lime-silica glasses with known redox conditions and iron concentration to calibrate the absorption at 1100 nm in function of Fe2+ concentration. The linear extinction coefficient is also determined. These glasses were also studied with XANES. EPR is also used as ancillary method to verify the quality of our data.
Original languageEnglish
Pages (from-to)1-15
JournalJournal of Analytical Atomic Spectrometry
Volumeadvance article
Issue numberissue number/pages will appear later
StatePublished - 15 Apr 2015

Cite this