| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Morizet, Yann
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Incorporation of chlorine in nuclear waste glasses using high-pressure vitrification: Solubility, speciation, and local environment of chlorinecitations
- 2023High-pressure glass-ceramics for iodine nuclear waste immobilization: Preliminary experimental resultscitations
- 2022Predicting iodine solubility at high pressure in borosilicate nuclear waste glasses using optical basicity: an experimental studycitations
- 2021The influence of iodide on glass transition temperature of high‐pressure nuclear waste glassescitations
- 2019X-ray absorption spectroscopic investigation of the Ca and Mg environments in CO2-bearing silicate glassescitations
- 2017A Raman calibration for the quantification of SO42-groups dissolved in silicate glasses: Application to natural melt inclusionscitations
- 2017Towards the reconciliation of viscosity change and CO 2 -induced polymerization in silicate meltscitations
- 2017The effect of Mg concentration in silicate glasses on CO 2 solubility and solution mechanism: Implication for natural magmatic systemscitations
- 2017A Raman calibration for the quantification of SO42− groups dissolved in silicate glasses: Application to natural melt inclusionscitations
- 2017A Raman calibration for the quantification of SO42− groups dissolved in silicate glasses: Application to natural melt inclusionscitations
- 201717 O NMR evidence of free ionic clusters Mn+ CO3 2− in silicate glasses: Precursors for carbonate-silicate liquids immiscibilitycitations
- 2015The effect of sulfur on the glass transition temperature in anorthite-diopside eutectic glassescitations
- 2013Quantification of dissolved CO2 in silicate glasses using micro-Raman spectroscopycitations
- 2005A composition-independent quantitative determination of the water content in silicate glasses and silicate melt inclusions by confocal Raman spectroscopy
Places of action
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article
Quantification of dissolved CO2 in silicate glasses using micro-Raman spectroscopy
Abstract
This study investigates the potential use of confocal micro-Raman spectroscopy for the quantification of CO2 in geologically relevant glass compositions. A calibration is developed using a wide range of both natural and synthetic glasses that have CO2 dissolved as carbonate (CO32−) in the concentration range from 0.2 to 16 wt%. Spectra were acquired in the 200 and 1350 cm−1 frequency region that includes the ν1 Raman active vibration for carbonate at 1062-1092 cm−1 and the intensity of this peak is compared to various other peaks representing the aluminosilicate glass structure. The most precise and accurate calibration is found when carbonate peaks are compared to aluminosilicate spectral features in the high-frequency region (HF: 700-1200 cm−1), which can be simulated with several Gaussian peaks, directly related to different structural species in the glass. In some samples the "dissolved" CO32− appears to have two different Raman bands, one sharper than the other. This may be consistent with previous suggestions that CO32− has several structural environments in the glass, and is not related to any precipitation of crystalline carbonate from the melt during quenching. The calibration derived using the HF peaks appears linear for both the full range of glass composition considered and the range of CO2 concentrations, even when multiple carbonate peaks are involved. We propose the following, compositionally independent linear equation to quantify the CO2 content in glass with micro-Raman spectroscopy Formula where CO3/HF is the area ratio of the fitted ν1 carbonate peak(s) at 1062-1092 cm−1 to the remaining area of the fitted aluminosilicate envelope from 700-1200 cm−1. This is similar to the Raman calibration developed for water, but is complicated by the overlapping of these two fitted components. Using error propagation, we propose the calibration accuracy is better than ±0.4 wt% CO2 for our data set. The ν1 Raman peak position for carbonate is not constant and appears to be correlated with the density of the melt (or glass) in some way rather than the chemical composition.