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Proceedings Paper

EnFET for urea determination in biological fluids using ammonium ion detection
Author(s): Marek Dawgul; Tomasz Trybun; Dorota G. Pijanowska; Wladyslaw Torbicz
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Paper Abstract

In this paper a method of urease immobilization on the surface of the Siloprene membrane of the ammonium ion sensitive ChemFET is presented. The usability of the sensor for determination of urea in solutions at pH typical for biological fluids (pH 6 to pH 7.5) has been investigated. Due to the fact that the sensor exhibits high sensitivity to samples of low buffer capacity, the method of preliminary sample treatment, consisting in addition of buffers at adequate buffer capacity was developed. The sensors were tested in dialysate and blood plasma.

Paper Details

Date Published: 22 September 2003
PDF: 8 pages
Proc. SPIE 5124, Optoelectronic and Electronic Sensors V, (22 September 2003); doi: 10.1117/12.517106
Show Author Affiliations
Marek Dawgul, Institute of Biocybernetics and Biomedical Engineering (Poland)
Tomasz Trybun, Institute of Biocybernetics and Biomedical Engineering (Poland)
Dorota G. Pijanowska, Institute of Biocybernetics and Biomedical Engineering (Poland)
Wladyslaw Torbicz, Institute of Biocybernetics and Biomedical Engineering (Poland)


Published in SPIE Proceedings Vol. 5124:
Optoelectronic and Electronic Sensors V
Wlodzimierz Kalita, Editor(s)

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