Title :
A disposable microsensor for continuous monitoring of free chlorine in water
Author :
Shekhar, Halakatti ; Chathapuram, V. ; Hyun, Seung H. ; Hong, Seungkwan ; Cho, Hvouna J.
Author_Institution :
Dept. of Electr. Eng., Central Florida Univ., Orlando, FL, USA
Abstract :
We designed, fabricated and tested a low cost, disposable, flow-through sensor to determine the amount of free chlorine in water. The whole sensor cell combining electrodes and a fluidic channel is micromachined on a chemically-inert transparent cyclic olefin copolymer substrate. The advantages are (a) disposability from low cost (b) wide operation range from three-electrode design (c) easy electrical and fluidic interconnection from a chip format, compared to previous works. The sensor showed a good response and linearity in the chlorine concentration ranging from 1.5 to 8 ppm, which applies to common chlorination process.
Keywords :
chemical sensors; chlorine; microfluidics; microsensors; monitoring; chemically-inert transparent cyclic olefin copolymer substrate; chip format; chlorine concentration; common chlorination process; continuous monitoring; disposable microsensor; electrical interconnection; flow-through sensor; fluidic channel; fluidic interconnection; free chlorine; micromachining; sensor cell; three-electrode design; wide operation range; Aerospace materials; Chemical sensors; Electrodes; Gold; Microfluidics; Microsensors; Monitoring; Optical sensors; Packaging; Temperature sensors;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1278897
