{"term":{"id":"09145","title":"sampled DC polarography","longtitle":"IUPAC Gold Book - sampled DC polarography","doi":"10.1351\/goldbook.09145","code":"09145","status":"current","synonym":"<em>synonym<\/em>: TAST polarography","definitions":[{"id":1,"text":"DC polarography with current sampling at the end of each drop life mechanically enforced by a knocker at a preset drop time value. The current sampling and mechanical drop dislodge are synchronized.","notes":{"1":"In this way, the ratio of faradaic current to double layer charging current is enhanced and the negative influence of charging current is partially eliminated. Due to the improved signal (faradaic current) to noise (charging current) ratio, the limit of detection is lowered."},"links":[{"term":"DC polarography","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/09135"},{"term":"current sampling","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/09133"}],"sources":["PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 678 (https:\/\/doi.org\/10.1515\/pac-2018-0109)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09145\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09145\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09145\/plain"},"citation":"Citation: 'sampled DC polarography' 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.09145","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":"2026-04-21T02:22:09+00:00"}}