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What is the coeffcient of absorption of water for infrared spectroscopy? 

Molecular dynamics
Extended X-ray absorption fine structure
Absorption (acoustics)
Water vapor
Cavity ring-down spectroscopy
Best insight from top research papers

The coefficient of absorption of water for infrared spectroscopy varies based on factors like temperature, salinity, and molecular structure. Studies have shown that the absorption spectra of water can be influenced by its molecular arrangement, such as in confined spaces like nanochannels, resulting in spectral shifts and enhancements. Techniques like solvent absorption compensation (SAC) have been developed to improve concentration sensitivity and extend path length for protein analysis in aqueous solutions, enhancing signal-to-noise ratios significantly. Additionally, molecular dynamics simulations have been utilized to calculate the IR absorption spectra of liquid water, providing insights into the thermodynamic and dynamic properties of water. Overall, the coefficient of absorption of water for infrared spectroscopy is a complex parameter influenced by various environmental and molecular factors.

Answers from top 5 papers

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Journal Article•DOI
Infrared water vapor continuum absorption at atmospheric temperatures
John G. Cormier, Joseph T. Hodges, James R. Drummond 
18 Mar 2005-Journal of Chemical Physics
57 Citations
The water vapor continuum absorption coefficient for infrared spectroscopy is Cs(296K)=(1.82±0.02)×10−22cm2molecule−1atm−1 for water-water and Cn(296K)=(7.3±0.4)×10−25cm2molecule−1atm−1 for water-nitrogen.
Open access•Journal Article•DOI
Temperature and salinity correction coefficients for light absorption by water in the visible to infrared spectral region
Rüdiger Röttgers, David McKee, Christian Utschig 
20 Oct 2014-Optics Express
74 Citations
Temperature and salinity correction coefficients for water absorption in the infrared region are provided, ranging from 400 to 14000 nm (wavenumbers: 25000 to 700 cm(-1)).
Open access•Journal Article•DOI
The infrared absorption spectra of one dimensional ordered single-file water by molecular dynamics simulation
Zhang Qi-Lin, Wang Rui-Feng, Zhou Tong, Wang Yun-Jie, Liu Qi 
01 Jan 2023-Chinese Physics
The coefficient of absorption of water for infrared spectroscopy is influenced by the ordered arrangement in single-file water, resulting in a blue shift and peak enhancement in the 0-35 THz region.
Journal Article•DOI
Infrared absorption spectra of liquid water and deuterated water by Car-Parrinello molecular dynamics
ChengChao Wang, Jianyu Tan, Jia-Yue Yang, Linhua Liu 
03 Nov 2015-Chinese Science Bulletin
1 Citations
The coefficient of absorption for water in infrared spectroscopy can be determined from the IR absorption spectra obtained through Car-Parrinello molecular dynamics simulations and Fourier transformation of the dipole moment autocorrelated function.
Journal Article•DOI
Compensation of Strong Water Absorption in Infrared Spectroscopy Reveals the Secondary Structure of Proteins in Dilute Solutions.
Bonghwan Chon, Shuyu Xu, Young Jong Lee 
12 Jan 2021-Analytical Chemistry
9 Citations
The paper does not directly mention the coefficient of absorption of water for infrared spectroscopy.

Related Questions

How to calculate water absorption of fiber?5 answersTo calculate water absorption of fiber, various methods and models can be employed based on the type of fiber and composite material. Studies have utilized different approaches such as the Langmuir diffusive model for predicting water absorption in polymer composites reinforced with vegetal fibers. Additionally, the use of MATLAB software has been explored for water absorption tests on composites reinforced with coconut shell fiber, aluminum oxide, and silicon carbide, providing insights into the diffusion and retention of water molecules within the material. Furthermore, research has focused on monitoring water diffusion in laminated biocomposites using artificial neural network (ANN) methods, demonstrating the ability to accurately predict water absorption behavior in biocomposites. These methodologies offer valuable tools for understanding and quantifying water absorption in fiber-reinforced composites.
What is the coeffcient of absorption of water?5 answersThe coefficient of absorption of water varies depending on the material being studied. For isotropic materials like calcium silicate or brick, a constant water absorption coefficient (A-coefficient) is observed, with the initial absorption period ranging from ½ to 4 minutes. On the other hand, materials with a multiple pore-system, such as Aerated Autoclaved Concrete (AAC), may exhibit a systematically varying A-coefficient. In the context of cooking quality determination for yam and cassava cultivars, water absorption during cooking is a crucial factor. Mealy cooking quality of yam absorbs less water (6.6%) compared to hard cooking quality (23.5%). Similarly, mealy cooking cassava absorbs more water (27.6%) than hard cooking cassava (12.4%). These variations in water absorption coefficients play a significant role in determining the characteristics and quality of different materials and food products.
What is the absorption coefficient of water at 355 nm?5 answersThe absorption coefficient of water at 355 nm is not mentioned in the provided abstracts.
What is the use of infrared spectroscopy?5 answersInfrared spectroscopy is a technique used to identify and determine components in various organic or inorganic compounds. It is commonly used in qualitative and quantitative analyses, including the estimation of compounds through measuring the transmitted or absorption intensity of active groups. In the field of heterogeneous catalysis research and development, infrared spectroscopy is used for structural characterization, such as identifying surface metal-oxygen bonds and surface acid sites. Additionally, infrared spectroscopy can be used to automatically identify functional groups in molecules without the need for database searching or peak matching methods. The technique is also powerful for structural analysis, as it allows for the identification of functional groups in solids, liquids, or gases by analyzing obtained spectra. In the analysis of food toxins, infrared spectroscopy is a non-destructive and rapid method for the detection and characterization of contaminants in high throughput.
What is the absorption bands for water?4 answersThe absorption bands for water are within the 1600 cm-1 (6.25 μm) and 3600 cm-1 (2.7 μm) ranges.
How much is an IR spectroscopy?7 answers

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