A micromachined electrochemical sensor for free chlorine monitoring in drinking water

    Authors

    A. Mehta; H. Shekhar; S. H. Hyun; S. Hong;H. J. Cho

    Comments

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    Abbreviated Journal Title

    Water Sci. Technol.

    Keywords

    chlorination; drinking water; electrochemical sensor; microsensor; AMPEROMETRIC GLUCOSE SENSOR; RESIDUAL CHLORINE; ELECTRODE; Engineering, Environmental; Environmental Sciences; Water Resources

    Abstract

    In this work, we designed, fabricated and tested a disposable, flow-through amperometric sensor for free chlorine determination in water. The sensor is based on the principle of an electrochemical cell. The substrate, as well as the top microfluidic layer, is made up of a polymer material. The advantages include; (a) disposability from low cost; (b) stable operation range from three-electrode design; (c) fluidic interconnections that provide on line testing capabilities; and (d) transparent substrate which provides for future integration of on-chip optics. The sensor showed a good response and linearity in the chlorine concentration ranging from 0.3 to 1.6 ppm, which applies to common chlorination process for drinking water purification.

    Journal Title

    Water Science and Technology

    Volume

    53

    Issue/Number

    4-5

    Publication Date

    1-1-2006

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    403

    Last Page

    410

    WOS Identifier

    WOS:000238056000044

    ISSN

    0273-1223

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