J Appl Biomed 6:57-64, 2008 | DOI: 10.32725/jab.2008.008
Electrochemical biosensors - principles and applications
- 1 Centre of Advanced Studies, Faculty of Military Health Sciences, University of Defense, Hradec Králové, Czech Republic
- 2 Department of Biochemistry and National Center for Biomolecular Research, Masaryk University, Brno, Czech Republic
The first scientifically proposed as well as successfully commercialized biosensors were those based on electrochemical sensors for multiple analytes. Electrochemical biosensors have been studied for a long time. Currently, transducers based on semiconductors and screen printed electrodes represent a typical platform for the construction of biosensors. Enzymes or enzyme labeled antibodies are the most common biorecognition components of biosensors. The principles of, and the most typical applications for electrochemical biosensors are described in this review. The relevant systems are divided into three types according to the operating principle governing their method of measurement: potentiometric, amperometric and impedimetric transducers, and the representative devices are described for each group. Some of the most typical assays are also mentioned in the text.
Keywords: enzyme electrode; immunosensor; potentiometric; amperometric; impedimetric transducer
Received: January 2, 2008; Revised: January 7, 2008; Published: July 31, 2008 Show citation
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