Title: Fourier-transform infrared spectroscopy
Long Title: IUPAC Gold Book - Fourier-transform infrared spectroscopy
DOI: 10.1351/goldbook.08605
Status: current

Definition
Infrared spectroscopy in which a Fourier-transform spectrometer is used to separate the transmitted electromagnetic radiation into its component wavenumbers.

Related Terms
- Infrared spectroscopy: https://goldbook.iupac.org//terms/view/08618
- electromagnetic radiation: https://goldbook.iupac.org//terms/view/08242
- wavenumbers: https://goldbook.iupac.org//terms/view/08302

Source
- PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 747 (https://doi.org/10.1515/pac-2019-0203)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08605/html
- json: https://goldbook.iupac.org/terms/view/08605/json
- xml: https://goldbook.iupac.org/terms/view/08605/xml

Citation: Citation: 'Fourier-transform infrared spectroscopy' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08605
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-06-05T00:43:39+00:00