{"term":{"id":"09103","title":"dropping mercury electrode","longtitle":"IUPAC Gold Book - dropping mercury electrode","doi":"10.1351\/goldbook.09103","code":"09103","status":"current","mentioned":"<em>mentioned<\/em>: hanging mercury drop electrode (HMDE), static mercury drop electrode (SMDE)","synonym":"<em>synonym<\/em>: DME","definitions":[{"id":1,"text":"Mercury electrode formed by sequence of mercury drops falling from a small aperture.","notes":{"1":"The DME was introduced by Jaroslav Heyrovský (1890–1967). A drop is renewed every few seconds. Many metals amalgamate with mercury so that in the analysis of metal ions in aqueous solution the DME maintains a fresh surface throughout.","2":"Other kinds of mercury drop electrodes are the static mercury drop electrode (SMDE), in which a drop is held at constant radius before being mechanically knocked off, and the hanging mercury drop electrode (HMDE), in which the whole experiment is performed on a single drop of mercury."},"links":[{"term":"Mercury electrode","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/09102"}],"sources":["PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 660 (https:\/\/doi.org\/10.1515\/pac-2018-0109)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09103\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09103\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09103\/plain"},"citation":"Citation: 'dropping mercury electrode' 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.09103","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":"2026-04-18T09:28:35+00:00"}}