09196 IUPAC Gold Book - diffuse reflection-absorption infrared spectroscopy 10.1351/goldbook.09196 09196 current acronyms: DRAIRS, DRIFTS synonym: diffuse reflectance infrared Fourier transform spectroscopy 1 Measurement method in which the infrared absorption spectrum of light reflected and transmitted from powdered samples is measured. Used for the analysis of weakly-reflective surfaces in gas phase or vacuum. PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1790 (https://doi.org/10.1515/pac-2019-0404) https://goldbook.iupac.org/terms/view/09196/html https://goldbook.iupac.org/terms/view/09196/json https://goldbook.iupac.org/terms/view/09196/plain Citation: 'diffuse reflection-absorption 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.09196 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-07-28T05:18:04+00:00