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Voltammetric multichannel measurements using silicon fabricated microelectrode arrays
Author(s) -
Paeschke Manfred,
Dietrich Frank,
Uhlig Albrecht,
Hintsche Rainer
Publication year - 1996
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140081008
Subject(s) - potentiostat , electrode , microelectrode , materials science , wafer , multielectrode array , optoelectronics , silicon , modular design , chip , common emitter , analytical chemistry (journal) , electrochemistry , computer science , chemistry , chromatography , telecommunications , operating system
A modular voltammetric multichannel detection system has been developed for use in flow analysis. Two different types of multichannel potentiostats, an adjustable and a ground‐fixed potentiostat, are realized. Both types work with up to sixteen independent working electrodes at one chip electrode array and are controlled through a personal computer and a microcontroller. Simultaneous difference pulse and cyclic voltammetric procedures are realized. Platinum thin‐film array electrodes have been arranged on silicon wafers as pairs of interdigitated microband electrodes (interdigitated array electrodes; IDA) with an interelectrode gap in the submicrometer range. Furthermore the multichannel electrodes in a flow system were used to characterize the highly sensitive flow profiles and flow rate measurements using redox mediators. A brief description of applying the multichannel device for ‘window’ stripping of heavy metals is given.