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Surfactant Sensors in Biotechnology Part 1-Electrochemical Sensors

An overview on electrochemical surfactant sensors is given with special attention to work published since 1993. The importance of surfactants in modern biotechnology is stressed out. Electrochemical sensors are usually divided according to the measured physical quantity to potentiometric, amperometric, conductometric and impedimetric surfactant sensors. The last ones are very few. Potentiometric surfactant sensors are the most numerous due to their simplicity and versatility. They can be used either as end-point titration sensors or as direct EMF measurement sensors, in batch or flow through mode. Some amperometric surfactant sensors are true biosensors using microorganisms or living cells.

surfactants; sensors; electrochemical; potentiometric; conductomtric; ISFET sensors; amperometric; biotechnology

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