In situ calibrated oxygen electrode
by Johnson, C. D.; Paul, D. W.
Applications for determining dissolved oxygen cover many scientific fields ranging from aquatic to medicinal. Dissolved oxygen is often measured using a Clark electrode, however this device needs frequent recalibration due to changes in:sensitivity caused by environmental conditions. External methods of calibration require removal of the sensor from the working environment. In this work, an oxygen-generating electrode is used to recalibrate the Clark-type oxygen-detecting electrode in situ. Preliminary data show that the new calibration procedure provides an estimate of the sensitivity to within 7.5% of the actual value determined experimentally. In situ calibration would have an enormous impact on the way chemical and biological processes are monitored.
- Journal
- Sensors and Actuators B-Chemical
- Volume
- 105
- Issue
- 2
- Year
- 2005
- Start Page
- 322-328
- URL
- https://dx.doi.org/10.1016/j.snb.2004.06.017
- ISBN/ISSN
- 1873-3077; 0925-4005
- DOI
- 10.1016/j.snb.2004.06.017