Abstract
A potentiometric urea biosensor based on urease (Ur) electrochemical immobilisation by poly(o-phenylenediamine) (PPD) is proposed. Polymer films have been grown by cyclic voltammetry on a glassy carbon (GC) electrode, using an unconventional "upside-down" (UD) geometry. GC/Ur-PPD electrodes exhibit a rapid (5-10 s) and sensitive response to urea concentration and lifetime of at least 5 weeks. Work is in progress to optimise the sensor and study its behaviour in the presence of possible interferences. © 2011 Springer Science+Business Media B.V.
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CITATION STYLE
Chirizzi, D., & Malitesta, C. (2011). A new potentiometric urea biosensor based on urease immobilized in electrosyntesised poly(o-phenylenediamine). In Lecture Notes in Electrical Engineering (Vol. 91 LNEE, pp. 335–338). https://doi.org/10.1007/978-94-007-1324-6_52
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