| Publication Type |
Journal Article |
| Title |
Quasi-simultaneous measurements of ionic currents by vibrating probe and pH distribution by ion-selective microelectrode |
| Authors |
S. V. Lamaka Maryna Taryba Maria F. Montemor H. S. Isaacs M. G. S. Ferreira |
| Groups |
|
| Journal |
ELECTROCHEMISTRY COMMUNICATIONS |
| Year |
2011 |
| Month |
January |
| Volume |
13 |
| Number |
1 |
| Pages |
20-23 |
| Abstract |
This work reports a new methodology to measure quasi-simultaneously the local electric fields and the distribution of specific ions in a solution via selective microelectrodes. The field produced by the net electric current was detected using the scanning vibrating electrode technique (SVET) with quasi-simultaneous measurements of pH with an ion-selective microelectrode (pH-SME). The measurements were performed in a validation cell providing a 48 mu m diameter Pt wire cross section as a source of electric current. A time lag between acquiring each current density and pH data-point was 1.5 s due to the response time of pH-SME. The quasi-simultaneous SVET-pH measurements that correlate electrochemical oxidation-reduction processes with acid-base chemical equilibria are reported for the first time. No cross-talk between the vibrating microelectrode and the ion-selective microelectrode could be detected under given experimental conditions. (C) 2010 Elsevier B.V. All rights reserved. |
| DOI |
http://dx.doi.org/10.1016/j.elecom.2010.11.002 |
| ISBN |
|
| Publisher |
|
| Book Title |
|
| ISSN |
1388-2481 |
| EISSN |
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| Conference Name |
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| Bibtex ID |
ISI:000286854000006 |
| Observations |
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