{"term":{"id":"09930","title":"sample introduction","longtitle":"IUPAC Gold Book - sample introduction","doi":"10.1351\/goldbook.09930","code":"09930","status":"current","mentioned":"<em>mentioned<\/em>: leading electrolyte, terminating electrolyte","definitions":[{"id":1,"text":"In isotachophoresis a sample is introduced between a zone of fast leading electrolyte and a zone of slow terminating electrolyte.","notes":{"1":"Usually, the leading and terminating electrolytes have a common counter-ion, but the co-ions are different."},"contexts":[],"sources":["PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 219 (https:\/\/doi.org\/10.1515\/pac-2017-0111)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09930\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09930\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09930\/plain"},"citation":"Citation: 'sample introduction' 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.09930","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":"2026-07-26T21:55:14+00:00"}}