The CO 2 content in gases or liquids can be determined based on the CO 2 Raman spectrum, which makes Raman spectroscopy a powerful process analytical technology for CO 2 detection. The feasibility of its fast response, remote sampling, and water-insensitive spectral features render this technique a potential candidate for online applications in ...

Carbon Dioxide, CO 2. C-O asymmetric stretching 2565 cm-1 (IR intensity = 1.0) (Raman inactive) C-O symmetric stretching 1480 ... 1480 cm-1 (IR inactive) (Raman active) O-C-O bending 526 cm-1 (IR intensity = 0.038) (Raman inactive) O-C-O bending 526 cm-1 (IR intensity = 0.038) (Raman inactive) ...

Jun 1, 2018 · Three methods have been studied for deriving the CO2 concentration from the Raman spectra (the peak intensity ratio, the integrated intensity ratio, the contour fit method). The best results were obtained when the contour fit method is applied for Raman spectra processing.

Raman spectra of CO2 fluids were measured at 288-329 K and densities of 0.81-1.16g/cm (3). The peak area ratios of hot bands at 1265 and 1408 cm (-1) and Fermi doublet peaks at 1388 and...

Aug 5, 2023 · 13 CO 2 and 12 CO 2 can be distinguished by peak position and FWHM. The presence of 13 CO 2 can affect the accuracy of CO 2 Raman densimeters. A rapid in situ Raman quantitative method of 13 CO 2 / 12 CO 2 was developed.

Jan 1, 2025 · In this paper, we present a comprehensive simulation of CO 2 Raman spectra, building on the works of previous studies [6], [8], [9], [11]. Our approach includes both isotropic and anisotropic scattering and encompasses pure vibrational Q as well as ro-vibrational O, P, R and S branch transitions.

Three methods have been studied for deriving the CO2 concentra-tion from the Raman spectra (the peak intensity ratio, the integrated intensity ratio, the contour fit method). The best results were obtained when the contour fit method is applied for Raman spectra pro-cessing.

Deep-sea carbon dioxide (CO2) plays a significant role in the global carbon cycle and directly affects the living environment of marine organisms. In situ Raman detection technology is an...

May 23, 2018 · Fermi resonance is a significant feature of the Raman spectrum of carbon dioxide, and the symmetric stretching and bending modes of dissolved CO 2 occur at 1,380 and 1,280 cm −1, respectively.

Probing the Dynamics of Low-Overpotential CO2-to-CO Activation on Copper Electrodes with Time-Resolved Raman Spectroscopy. Journal of the American Chemical Society 2022 , 144 (33) , 15047-15058.