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Model of a conductimetric urea sensor

  • David J. Mears*
  • , Norman F. Sheppard
  • , Cyrus T. Anderson
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A model for predicting the response of a conductimetric urea sensor was developed. The sensor under consideration is formed by immobilizing the enzyme urease onto the surface of a planar interdigitated electrode array. The analysis combines a mass transport model with an electromagnetic fields model for calculating interelectrode impedance. The transport model was used to determine the evolution of charged reaction products in time and space. Interelectrode impedance was calculated from the resulting ionic conductivity profiles using the fields model. The calibration curve resulting from the model predictions was in good agreement with experimental data, using a single adjustable parameter.

Original languageEnglish
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
EditorsAndrew Y.J. Szeto, Rangaraj M. Rangayyan
PublisherPubl by IEEE
Pages191-192
Number of pages2
Editionpt 3
ISBN (Print)0780313771
StatePublished - 1993
EventProceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 3 (of 3) - San Diego, CA, USA
Duration: 28 Oct 199331 Oct 1993

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 3
Volume15
ISSN (Print)0589-1019

Conference

ConferenceProceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 3 (of 3)
CitySan Diego, CA, USA
Period28/10/9331/10/93

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