NUMERICAL−SIMULATION OF THE TIME−DEPENDENT CURRENT TO MEMBRANE−COVERED OXYGEN SENSORS .2. THE APPROACH TO THE STEADY−STATE AND THE RESPONSE TO A STEP CHANGE FOR A MICROCATHODE
DJ GAVAGHAN‚ JS ROLLETT and CEW HAHN
Abstract
In this paper we develop further a model for the operation of the Clark electrode that we have described previously. The difficulties of using this type of sensor with a continuously applied potential are considered, and the nature of the diffusion processes as the steady state is approached for a gas sample or a still liquid sample is investigated. The effects of step changes in gas sample partial pressure are considered, together with the resulting response time of the sensor to such a change
Details
| ISSN |
00220728 |
| Journal |
Journal of Electroanalytical Chemistry |
| Number |
1 |
| Pages |
1–14 |
| Publisher |
Elsevier Science |
| Volume |
348 |
| Year |
1993 |
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