7.2.3 Glass based redox sensor
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- 7.2 Electrochemical Sensors I
- W. Vonau, E. Pöhler, F. Gerlach, K. Ahlborn - Kurt-Schwabe-Institut für Mess- und Sensortechnik e.V. Meinsberg (Germany)
- 600 - 603
Introduced is a glass based planar sensor for the determination of redox potentials. The sensor was fabricated by applying and stoving an iron-containing paste on an alumina substrate partially covered with a platinum layer. Regarding the condition of the functional glass layer, it was characterized using several physical and chemical methods. Furthermore, the determination of redox potentials was carried out with different redox active substances. The results obtained with these electrodes were comparable to those received with conventional noble metal based redox electrodes. A significant pH dependence of the measurement signal was not detected. Moreover, the electrode could be used as working electrode for cyclic voltammetry, too.