Comparison of Raman spectroscopic methods for the determination of supercooled and liquid water temperature

Abstract

Raman spectroscopy provides an efficient method for non-contact determination of liquid water temperature with high spatial resolution. It can be also used for remote in situ determination of subsurface water temperature. The method is based on temperature-dependent changes of the molecular O-H stretching band in the Raman spectra of liquid water. These in turn are attributed to a decrease in intermolecular hydrogen-bonding interactions with increase in temperature. Here, the results of an experimental study employing three different approaches in the determination of temperature from recorded O-H stretching band in the Raman spectra of liquid and supercooled water are presented and discussed. The first two methods are based on deconvolution of the spectral band into Gaussian components whose intensities and associated specific spectral markers are temperature dependent, and the third approach is based on Raman difference spectroscopy (RDS). The presented measurements were conducted on distilled and deionized supercooled and liquid water in the temperature range between −12.5 and +32.5• C. The results are compared in terms of linearity of response, sensitivity and accuracy. It is shown that the method based on RDS even in the supercooled temperature range provides better accuracy (the standard deviation from the true temperature is ±0.4 K) and linearity in temperature determination than more complicated methods based on Gaussian deconvolution of the O-H stretching band.

Effect of Hydrogen Bonding on the Surface Tension Properties of Binary Mixture (Acetone-Water) by Raman Spectroscopy

“…Walrafen et al [34] described the Raman peaks of OH bonds with diverse wavenumbers while H 2 O was in different hydrogen bonding environments. OH stretching band was often fitted with different Gaussian components (five [35][36][37], four [38,39], three [40], two [41,42]) and each sub-band was further attributed to different structure models. In order to explore the structure and the properties of aqueous solutions, an attemptwhich is relevant to the present effort is devoted to analyze the typical hydrogen bond system solutions of acetone-water on the relationship between hydrogen bonding and solutions structure and on the surface tension with increasing amount of acetone.…”

Water ice at low temperatures and pressures: New Raman results

“…The presence and the structure influence of water was investigated and published in several articles, see only for example: destruction of oxides [22], temperature, salinity measurement, See mucilage-blooming excesses [23][24][25], water in the mineral [26], cataract lens deterioration [27], polymer's structural (de)stabilization [28], and Ni-complex polymorphism [29]. To complete our work we paid also significant attention to the similar topic: Pure water -low temperatures; that results are presented here for the first time.…”

Investigation on the Influence of Microstructure Based on Hydrogen Bonding on Surface Tension by Raman Spectroscopy

“…In order to study the transformation of hydrogen bonding on various structural models in aqueous solution, OH bonds are often divided into multiple subpeaks and, accordingly, assigned into different structures. Risović et al [37] divided the OH bond into two subbands at 3424.8 cm − 1 and 3206 cm − 1 being attributable to non-H-bonded and H-bonded species, respectively. e divided three subpeaks of the OH bond were located at 3241 cm − 1 for the ordered water structure (ice-like structure) and 3461 cm − 1 and 3655 cm − 1 for the disordered structures (defective structures), respectively [36].…”

“…e OH stretch band can often be fitted with five [24,25,[30][31][32][33], four [34,35], three [36], and two [37,38] Gaussian components, and different structure models could also be further attributed to each subbond. Nowadays, there are two classical models that are accepted mostly for investigating the vibrational peaks of the OH stretching vibration band, namely, vibration models [37] (symmetric stretching vibration and antisymmetric stretching vibration) and structural models [24,25,39] (free water, partially hydrogen-bonded structure, and fully hydrogen-bonded structure). In order to explore the influence of structure on the properties of solutions, these models were provided to know the structure of aqueous solutions.…”