EC3.5 - Liquid-junction Free Reference Electrode Integration into Amperometric Sensor Probe Using Closed Bipolar Electrode System
- Event
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria - Chapter
- Electrochemical Sensors 3
- Author(s)
- K. Inoue, S. Fakhrunddin, T. Matsue - Graduate School of Environmental Studies, Tohoku University, Sendai (Japan), R. Tsuga - School of Engineering, Tohoku University, Sendai (Japan)
- Pages
- 258 - 259
- DOI
- 10.5162/IMCS2018/EC3.5
- ISBN
- 978-3-9816876-9-9
- Price
- free
Abstract
A reference electrode used for electrochemical measurement generally has a liquid junction to allow the ion transport between an internal electrolyte and a test liquid for electrical conduction between the reference electrode and the test liquid. However, the liquid junction often causes troubles such as clogging and test liquid contamination. Previously, we proposed a galvanic cell system without liquid junction using a close bipolar electrode system. In this research, we fabricated a probe type amperometric sensor integrated with liquid-junction free reference electrode system based on the knowledge obtained by the previous study. This compact device successfully demonstrated to be used for ferrocenemethanol quantification in the range 0.1-0.5 mM.