Infrared Spectroscopy in Aqueous Solutions: Capabilities and Challenges

Abstract

Fourier-transform infrared (FTIR) spectroscopy provides rapid, reliable, quantitative, and qualitative analysis of samples in different aggregation states, i.e., gases, thin films, solids, liquids, etc. However, when analyzing aqueous solutions, particular issues associated with the rather pronounced IR absorption characteristics of water appear to interfere with the solute determination. In this review, Fourier-transform infrared spectroscopic techniques and their analytical capabilities for analyzing aqueous solutions are reviewed, and highlight examples are discussed.

Keywords:

• Aqueous solutions
• ATR
• FTIR
• infrared spectroscopy
• MIR

Acknowledgments

This research was performed according to the Development program of the Interdisciplinary Scientific and Educational School of Lomonosov Moscow State University, “The future of the planet and global environmental change”.

Additional information

Funding

This work was supported by The Russian Foundation for Basic Research, project number 20-33-70211. BM and PF acknowledge partial financial support by the EU Horizon 2020 project PHOTONFOOD (#101016444).