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18 November 1999 Automatic sensor system for groundwater monitoring network
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Proceedings Volume 3857, Chemical Microsensors and Applications II; (1999)
Event: Photonics East '99, 1999, Boston, MA, United States
An automatic sensor system with chemical sensors for water analysis is presented. It is part of a groundwater monitoring network which allows frequent measurements at low cost. The sensor system has an active fluidic system that combines micromachined and non-micromachined components to take water samples automatically. Three different types of sensors are included in the system, two ion selective sensors and an optofluidic microsystem that works as a microphotometer. It is shown that photometric analysis of different substances in water can be carried out in the microfluidic system using commercially available photometric reagents. Finally, an integrated microsystem for dosing and mixing of sample and reagent and photometric measurements on one chip is presented.
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Axel Ehlert and Stephanus Buettgenbach "Automatic sensor system for groundwater monitoring network", Proc. SPIE 3857, Chemical Microsensors and Applications II, (18 November 1999);

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