A semi-quantitative technique for determination of CO2 in cordierite by Raman spectroscopy in thin sections

Kaindl, Reinhard; Tropper, Peter; Deibl, I.

doi:10.1127/0935-1221/2006/0018-0331

Cited by 19 publications

(15 citation statements)

References 22 publications

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“…Sometimes, the samples are prepared in the form of crosscut pieces of several millimetres for the Raman study [85][86][87][88][89][90][91][92][93]. The use of thin sections for the Raman investigations within the frame of Cultural Heritage studies is quite rare, despite what happens in other research areas such as mineralogy and petrology [94][95][96][97]. Notwithstanding that, we must take into account that the optical examination of the glaze microstructures by thin sections should never be neglected in the Raman studies, particularly in case integrated studies on glaze microstructures are not provided (e.g., by using SEM).…”

Section: µRaman Applied To Petrographic Thin Sectionsmentioning

confidence: 99%

Breaking Preconceptions: Thin Section Petrography For Ceramic Glaze Microstructures

et al. 2019

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During the last thirty years, microstructural and technological studies on ceramic glazes have been essentially carried out through the use of Scanning Electron Microscopy (SEM) combined with energy dispersive X-ray analysis (EDX). On the contrary, optical microscopy (OM) has been considered of limited use in solving the very complex and fine-scale microstructures associated with ceramic glazes. As the crystallites formed inside glazes are sub- and micrometric, a common misconception is that it is not possible to study them by OM. This is probably one of the reasons why there are no available articles and textbooks and even no visual resources for describing and characterizing the micro-crystallites formed in glaze matrices. A thin section petrography (TSP) for ceramic glaze microstructures does not exist yet, neither as a field of study nor conceptually. In the present contribution, we intend to show new developments in the field of ceramic glaze petrography, highlighting the potential of OM in the microstructural studies of ceramic glazes using petrographic thin sections. The outcomes not only stress the pivotal role of thin section petrography for the study of glaze microstructures but also show that this step should not be bypassed to achieve reliable readings of the glaze microstructures and sound interpretations of the technological procedures. We suggest the adoption by the scientific community of an alternative vision on glaze microstructures to turn thin section petrography for glaze microstructures into a new specialized petrographic discipline. Such an approach, if intensively developed, has the potential to reduce the time and costs of scientific investigations in this specific domain. In fact, it can provide key reference data for the identification of the crystallites in ceramic glazes, avoiding the repetition of exhaustive protocols of expensive integrated analyses.

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Section: µRaman Applied To Petrographic Thin Sectionsmentioning

confidence: 99%

Breaking Preconceptions: Thin Section Petrography For Ceramic Glaze Microstructures

et al. 2019

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“…The in situ method can be applied to single crystals and to grains within thin sections. This method is based on linear relationships between the CO 2 content in wt% and the Raman intensity ratio of the CO 2 -stretching mode against two Si-O streching modes of the cordierite structure in a certain orientation (Kolesov & Geiger, 2000;Kaindl et al, 2006). The incorporation and orientation of CO 2 molecules in the structural channels of cordierite were investigated using various methods including DTA and dehydration studies (Sugiura, 1959), X-ray and neutron diffraction (e.g., Cohen et al, 1977;Armbruster, 1985), IR spectroscopy (Farrell & Newnham, 1967;Goldman et al, 1977;Le Breton, 1989;Vry et al, 1990;Kalt, 2000), proton NMR spectroscopy (Carson et al, 1982), quasi-elastic neutron scattering (Winkler et al, 1994b), and quantum mechanical calculations (Winkler et al, 1994a).…”

Section: Overview Of Raman-based Co 2 Determination In Cordieritementioning

confidence: 99%

“…To avoid uncertainties in the measurement of absolute Raman mode intensities, the intensities of the CO 2 stretching mode can be normalized to the lattice vibration modes. The two ratios obtained are approximately constant in the angular range between AE30 and may, therefore, be used for this analytical measurement (Kolesov & Geiger, 2000;Kaindl et al, 2006). Kolesov & Geiger (2000) investigated ten cordierite samples with varying chemical compositions using polarized single-crystal Raman spectroscopy at room temperature and 5 K and polarized infrared spectroscopy at room temperature.…”

Section: Overview Of Raman-based Co 2 Determination In Cordieritementioning

confidence: 99%

“…The CO 2 contents of seven samples were determined previously by bulk measurements (Vry et al, 1990). Kaindl et al (2006) presented a method for in situ determination of CO 2 content of natural cordierites in thin section using the 633 nm wavelength. Their investigation of nine synthetic and natural cordierite samples with different chemical compositions and CO 2 -contents led to an improvement of the calibration curve although, for samples with X CO2 ,0.1, the calibration curve was slightly shifted away from the origin.…”

Section: Overview Of Raman-based Co 2 Determination In Cordieritementioning

confidence: 99%

“…To facilitate orientation the untreated single crystals were fixed on a pin on a goniometer head. The details of the orientation procedure can be found in Kaindl et al (2006). The selection of suitable cordierite grains in thin sections is also described there.…”

Section: Experimental Setup and Data Evaluationmentioning

confidence: 99%

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Improved calibrations for Raman-spectroscopic determinations of CO2 in cordierite using three excitation wavelengths (488, 515 and 633 nm)

Haefeker¹,

Kaindl²,

Tropper³

2014

ejm

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Ten natural cordierite single crystals with X Fe in the range 0.044-0.76 and 0.12 to 1.97 wt% CO 2 were investigated with Raman microspectroscopy using three different wavelengths. Improved calibration diagrams for CO 2 determinations in single crystals and thin sections for the 488, 515 and 633 nm laser excitation wavelengths show significantly lower standard deviations for CO 2 determinations (AE0.04 to 0.07 wt%) compared to an earlier study done solely at 633 nm. The diagrams are based on the linear relationship between CO 2 in wt.% and the ratios of the Raman peak of CO 2 to two Si-O-stretching vibrations. The consideration of orientation dependencies and the improvement of background corrections and spectra fitting procedures also contributed to the significantly higher precision. Because Fe-incorporation in cordierite leads to structural changes that result in Raman peak shifts and peak broadening, including peaks considered in this investigation, a correction was introduced for precise CO 2 determination on Fe-bearing samples. This improved CO 2 determination method was then applied on a 2D spatial scale to two cordierite grains in a thin section of a granulite-facies metapelite from Kösseldorf in the Sauwald area (southern Bohemian Massif, Upper Austria), which yielded CO 2 contents of 0.27-0.31 AE0.07 wt%.

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Heavy-ion irradiation on crystallographically oriented cordierite and the conversion of molecular CO2 to CO: a Raman spectroscopic study

et al. 2009

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A semi-quantitative technique for determination of CO2 in cordierite by Raman spectroscopy in thin sections

Cited by 19 publications

References 22 publications

Breaking Preconceptions: Thin Section Petrography For Ceramic Glaze Microstructures

Breaking Preconceptions: Thin Section Petrography For Ceramic Glaze Microstructures

Improved calibrations for Raman-spectroscopic determinations of CO2 in cordierite using three excitation wavelengths (488, 515 and 633 nm)

Heavy-ion irradiation on crystallographically oriented cordierite and the conversion of molecular CO2 to CO: a Raman spectroscopic study

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