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Updated: Oct 2, 2025

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Infrared Spectroscopy in Aqueous Solutions: Capabilities and Challenges
Polina S Fomina1, Mikhail A Proskurnin2, Boris Mizaikoff1,3
1Institute of Analytical and Bioanalytical Chemistry, Ulm University, Ulm, Germany.
Fourier-transform infrared (FTIR) spectroscopy is a versatile tool for analyzing various sample types. This review explores FTIR techniques for overcoming water
Area of Science:
- Analytical Chemistry
- Spectroscopy
Background:
- Fourier-transform infrared (FTIR) spectroscopy offers rapid and reliable analysis for diverse sample states.
- Water's strong infrared absorption presents challenges for analyzing aqueous solutions using FTIR.
Purpose of the Study:
- To review Fourier-transform infrared spectroscopic techniques for analyzing aqueous solutions.
- To highlight methods for overcoming water interference in FTIR analysis of solutes.
Main Methods:
- Review of existing literature on FTIR spectroscopy applied to aqueous samples.
- Discussion of specific FTIR techniques tailored for aqueous matrices.
Main Results:
- Identification of challenges posed by water's IR absorption in solute analysis.
- Presentation of various FTIR methods and their analytical capabilities for aqueous solutions.
Conclusions:
- FTIR spectroscopy can be effectively applied to aqueous solutions with appropriate techniques.
- This review provides insights into overcoming water interference for accurate solute determination.
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