Title: spectral band
Long Title: IUPAC Gold Book - spectral band
DOI: 10.1351/goldbook.08285
Status: current

Definition
Region of the absorption/transmission spectrum in which the absorbance/transmission passes through a maximum/minimum.

Note
The use of the term "spectral band" implies a wider region of the spectrum than "spectral line" (see spectral line of an atom).

Related Term
- spectral line of an atom: https://goldbook.iupac.org//terms/view/08550

Source
- PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 673 (https://doi.org/10.1515/pac-2019-0203)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08285/html
- json: https://goldbook.iupac.org/terms/view/08285/json
- xml: https://goldbook.iupac.org/terms/view/08285/xml

Citation: Citation: 'spectral band' 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.08285
License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.
Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .
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: 2026-06-28T14:47:54+00:00