{"term":{"id":"09130","title":"AC voltammetry","longtitle":"IUPAC Gold Book - AC voltammetry","doi":"10.1351\/goldbook.09130","code":"09130","status":"current","definitions":[{"id":1,"text":"Voltammetry in which a sinusoidal alternating potential of small amplitude (\\(\\pu{10 to 50 mV}\\)) of constant frequency (\\(\\pu{10 Hz to 100 kHz}\\)) is superimposed on a slowly and linearly varying potential ramp. The resulting alternating current is plotted versus imposed DC potential. The obtained AC voltammogram is peak-shaped.Waveform for AC voltammetry. The applied potential as a function of time is a sinusoidal alternating potential superimposed on a linearly increasing ramp.\n","notes":{"1":"The phase angle between the alternating current and imposed DC potential is measured in the case of AC voltammetry with phase detection.","2":"In cyclic AC voltammetry, a reverse potential scan is added to the usual forward potential scan."},"links":[{"term":"Voltammetry","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/09148"}],"sources":["PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 669 (https:\/\/doi.org\/10.1515\/pac-2018-0109)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09130\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09130\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09130\/plain"},"citation":"Citation: 'AC voltammetry' 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.09130","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":"2026-04-18T08:15:55+00:00"}}