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Issue 5, 2010
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Ceramic capillary electrophoresis chip for the measurement of inorganic ions in water samples

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Abstract

We present a microchip capillary electrophoresis (CE) device build-up in low temperature co-fired ceramics (LTCC) multilayer technology for the analysis of major inorganic ions in water samples in less than 80 s. Contactless conductivity measurement is employed as a robust alternative to direct-contact conductivity detection schemes. The measurement electrodes are placed in a planar way at the top side of the CE chip and are realized by screen printing. Laser-cutting of channel and double-T injector structures is used to minimize irregularities and wall defects, elevating plate numbers per meter up to values of 110,000. Lowest limit of detection is 6 μM. The cost efficient LTCC module is attractive particularly for portable instruments in environmental applications because of its chemical inertness, hermeticity and easy three-dimensional integration capabilities of fluidic, electrical and mechanical components.

Graphical abstract: Ceramic capillary electrophoresis chip for the measurement of inorganic ions in water samples

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Publication details

The article was received on 28 Oct 2009, accepted on 25 Jan 2010 and first published on 05 Feb 2010


Article type: Paper
DOI: 10.1039/B922501C
Citation: Analyst, 2010,135, 965-970
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    Ceramic capillary electrophoresis chip for the measurement of inorganic ions in water samples

    G. Fercher, A. Haller, W. Smetana and M. J. Vellekoop, Analyst, 2010, 135, 965
    DOI: 10.1039/B922501C

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