Integrated potentiometric detector for use in chip-based flow cells
A new kind of potentiometric chip sensor for ion-selective electrodes (ISE) based on a solvent polymeric membrane is described. The chip sensor is designed to trap the organic cocktail inside the chip and to permit sample solution to flow past the membrane. The design allows the sensor to overcome technical problems of ruggedness and would therefore be ideal for industrial processes. The sensor performance for a Ba2+-ISE membrane based on a Vogtle ionophore showed electrochemical behavior similar to that observed in conventional electrodes and microelectrode arrangements.
Tantra
R
Zeneca/Smithkline Beecham Centre for Analytical Science, Department of Chemistry, Imperial College of Science, Technology and Medicine, London, UK.
Manz
A