Improving limits of detection. Microdisc versus microcylinder electrodes
The specific apparent capacitance (Farads per unit geometric area) of commercial carbon microdisc electrodes and in-house fabricated carbon microcylinders is studied through the use of cyclic voltammetry. Home-made microcylinder electrodes exhibit lower specific apparent capacitances and as a result...
| Main Authors: | , , , , , |
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| Format: | Journal article |
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Wiley
2016
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| _version_ | 1797099879056539648 |
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| author | Cinková, K Clark, M Sokolov, S Batchelor-McAuley, C Švorc, Ľ Compton, R |
| author_facet | Cinková, K Clark, M Sokolov, S Batchelor-McAuley, C Švorc, Ľ Compton, R |
| author_sort | Cinková, K |
| collection | OXFORD |
| description | The specific apparent capacitance (Farads per unit geometric area) of commercial carbon microdisc electrodes and in-house fabricated carbon microcylinders is studied through the use of cyclic voltammetry. Home-made microcylinder electrodes exhibit lower specific apparent capacitances and as a result facilitate lower limits of detection. We further demonstrate practically how the electroanalytical limit of the detection of solution phase trace oxygen is significantly improved using such microcylinder electrodes. Finally we show that after the degassing of a solution by nitrogen purging even in the most commonly encountered ‘best’ case scenarios approximately tens of μM of oxygen remain present in the electrochemical cell, unobservable by the commercial microdisc electrodes, but detectable with microcylinder electrodes, testifying to their analytical superiority. |
| first_indexed | 2024-03-07T05:29:55Z |
| format | Journal article |
| id | oxford-uuid:e1e5bbd4-6ed1-457a-b24d-0d846590892c |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:29:55Z |
| publishDate | 2016 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:e1e5bbd4-6ed1-457a-b24d-0d846590892c2022-03-27T09:57:25ZImproving limits of detection. Microdisc versus microcylinder electrodesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e1e5bbd4-6ed1-457a-b24d-0d846590892cSymplectic Elements at OxfordWiley2016Cinková, KClark, MSokolov, SBatchelor-McAuley, CŠvorc, ĽCompton, RThe specific apparent capacitance (Farads per unit geometric area) of commercial carbon microdisc electrodes and in-house fabricated carbon microcylinders is studied through the use of cyclic voltammetry. Home-made microcylinder electrodes exhibit lower specific apparent capacitances and as a result facilitate lower limits of detection. We further demonstrate practically how the electroanalytical limit of the detection of solution phase trace oxygen is significantly improved using such microcylinder electrodes. Finally we show that after the degassing of a solution by nitrogen purging even in the most commonly encountered ‘best’ case scenarios approximately tens of μM of oxygen remain present in the electrochemical cell, unobservable by the commercial microdisc electrodes, but detectable with microcylinder electrodes, testifying to their analytical superiority. |
| spellingShingle | Cinková, K Clark, M Sokolov, S Batchelor-McAuley, C Švorc, Ľ Compton, R Improving limits of detection. Microdisc versus microcylinder electrodes |
| title | Improving limits of detection. Microdisc versus microcylinder electrodes |
| title_full | Improving limits of detection. Microdisc versus microcylinder electrodes |
| title_fullStr | Improving limits of detection. Microdisc versus microcylinder electrodes |
| title_full_unstemmed | Improving limits of detection. Microdisc versus microcylinder electrodes |
| title_short | Improving limits of detection. Microdisc versus microcylinder electrodes |
| title_sort | improving limits of detection microdisc versus microcylinder electrodes |
| work_keys_str_mv | AT cinkovak improvinglimitsofdetectionmicrodiscversusmicrocylinderelectrodes AT clarkm improvinglimitsofdetectionmicrodiscversusmicrocylinderelectrodes AT sokolovs improvinglimitsofdetectionmicrodiscversusmicrocylinderelectrodes AT batchelormcauleyc improvinglimitsofdetectionmicrodiscversusmicrocylinderelectrodes AT svorcl improvinglimitsofdetectionmicrodiscversusmicrocylinderelectrodes AT comptonr improvinglimitsofdetectionmicrodiscversusmicrocylinderelectrodes |