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Microanalytical system for environmental control



Wise, K.D. ; IEEE Electron Devices Society:
Transducers '97. Digest of technical papers
Piscataway, NJ: IEEE, 1997
ISBN: 0-7803-3829-4
S.931-934 : Lit. (Vol.2)
International Conference on Solid-State Sensors and Actuators <9, 1997, Chicago/Ill.>
Fraunhofer IPM ()
chemical sensors; fluidic devices; ion sensitive field effect transistor; microelectrodes; micropump; microsensors; water pollution control; water pollution measurement

Flow injection analysis systems are often used to enhance the performance of chemical sensors. To reduce the fluid consumption of such a system, microtechniques offer many possibilities. In this contribution a concept is presented which combines three different transducer principles, different sensitive coatings, micropumps and microchannel systems and a sample pretreatment. It aims at five model parameters of water monitoring. An intermediate system using roller pumps, uncoated amperometric electrodes and a microchannel system was realized. Measurements show the function of such a miniaturized system.