Issue 5, 2010
From the journal:

Analyst

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

Georg Fercher,*ab   Anna Haller,b   Walter Smetanab  and  Michael J. Vellekoopb  

* Corresponding authors

a Integrated Microsystems Austria GmbH, Viktor Kaplan Straße 2/1, Wiener Neustadt, Austria
E-mail: office@ima-mst.at
Fax: +43 2622 22859 55
Tel: +43 2622 22859 10

b Institute of Sensor and Actuator Systems, Vienna University of Technology, Gusshausstraße 27-29, Wien, Austria
E-mail: georg.fercher@tuwien.ac.at
Fax: +43 1 58801 36699
Tel: +43 1 58801 36667

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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Article information

DOI
https://doi.org/10.1039/B922501C
Article type
Paper
Submitted
28 Oct 2009
Accepted
25 Jan 2010
First published
05 Feb 2010

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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