08537 IUPAC Gold Book - radiofrequency glow discharge optical emission spectroscopy 10.1351/goldbook.08537 08537 current initialism: RF-GD-OES 1 Optical emission spectroscopy in which a radiofrequency-powered glow discharge is operated with frequencies in the low megahertz range. The use of these frequencies establishes a negative direct current (DC)-bias voltage on the sample surface. The DC-bias is the result of an alternating current waveform that is centered about negative potential; as such it more or less represents the average potential residing on the sample surface. Radio-frequency has ability to appear to flow through insulators (non-conductive materials). Optical emission spectroscopy https://goldbook.iupac.org//terms/view/08513 glow discharge https://goldbook.iupac.org//terms/view/08481 PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 731 (https://doi.org/10.1515/pac-2019-0203) https://goldbook.iupac.org/terms/view/08537/html https://goldbook.iupac.org/terms/view/08537/json https://goldbook.iupac.org/terms/view/08537/plain Citation: 'radiofrequency glow discharge optical emission 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.08537 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. 2026-06-21T00:00:37+00:00