Using Raman spectroscopy as a tool for the detection of iron in glass

Abstract

Raman spectroscopy has been used to identify iron-containing glasses. This nondestructive technique offers a fast method to obtain qualitative information about the presence of iron oxides in glass. The effect of the iron content in glass samples is reflected on the topology of the Raman spectra: A strong link between the ratio of the Q 2 /Q 3 vibration units of the silica tetrahedral structure is seen. If matrix effects are taken into account, also (semi)quantitative results can be obtained from the calibration lines. The linear calibration is based on the normalized band intensity at 980 cm −1 (I 980 /I 1090 ) and the iron oxide concentration for similar glasses. In amber and dark colored glasses, an extra peak in the spectrum indicates the presence of a FeS chromophore. Different series of glasses of various origins (ancient and modern/industrial glass) have been considered.

The effects of γ-radiation on model vitreous wasteforms intended for the disposal of intermediate and high level radioactive wastes in the United Kingdom

“…Fig. 12a band assignments are in good agreement with Raman observations of alkali-borosilicate glasses, and Fe-rich alkali borosilicate glasses [45,46,[48][49][50][51][52][53][54][55]. In addition to the aforementioned bands, a strong band located at 990 cm À1 was detected in glasses G11 and G73, and fitting of data from glass G78 also indicated a contribution from a band at $990 cm À1 ; however, this band was absent from the glass MW-25%.…”

“…In addition to the aforementioned bands, a strong band located at 990 cm À1 was detected in glasses G11 and G73, and fitting of data from glass G78 also indicated a contribution from a band at $990 cm À1 ; however, this band was absent from the glass MW-25%. The 990 cm À1 band is attributed to the S-O stretching mode in the SO 2À 4 oxyanion, typically when associated with alkali species such as Na, based on previous reports [44][45][46][47]56]. An additional Raman band was apparent at $400 cm À1 in the spectra of glasses G11, G73, and G78, which was attributed to the Fe 3+ -S 2À stretch, based on the analysis of Klimm [58] and several mineralogical examples of metal sulphides [59][60][61].…”

Roles of iron and lithium in silicate glasses by Raman spectroscopy

“…Raman spectroscopy is known to be an excellent non‐destructive method of structural analysis of such glass systems. It has been reported that Raman spectroscopy can probe the structural changes occurring in such vitreous systems through the study of their vibrational bands . It is also well known that silicates, both in amorphous and crystalline forms, have SiO 4 tetrahedral units that are covalent in nature and display remarkable features in their Raman spectra.…”

Optical spectroscopy as a rapid and low-cost tool for the first-line analysis of glass artefacts: a step-by-step plan for Roman green glass

“…Some studies have used Raman spectrometry to reveal information about a fragment's composition (Baert et al, 2010(Baert et al, , 2011Colomban, 2004;Colomban and Slodczyk, 2009). Raman spectrometry determines the nature and the arrangement of the chemical bonds in the material.…”