This paper presents the development of a simple, low cost, the new type of urea sensor, and
suitable for water quality monitoring. Here, urease is immobilized on the electrodes using …

Urease (typeIII) purified from Jack bean was immobilized on gelatin beads via cross-linking
with glutaraldehyde. The maximum immobilization (70.82%) was observed with a half-life of …

This paper presents, an electrical equivalent modeling of a two electrode type urea sensor,
which follows urease based impediometric sensing. The modeling is done by electrical …

A potentiometric urea biosensor is prepared by the immobilization of urease directly onto the
surface of a solid-state ammonium ion-selective electrode. The enzyme is immobilized by …

A renewable urea sensor based on a carboxylic poly (vinyl chloride)(PVC–COOH) matrix pH-
sensitive membrane has been proposed, in which a positively charged polyelectrolyte layer …

Potentio-dynamic polymerization of buffered urease and pyrrole monomer onto carbon
papers was conducted to fabricate an immobilized urease electrode for measuring the urea …

Numerous studies have addressed the utilization of glutaraldehyde (GA) as a
homobifunctional cross-linker. However, its applicability has been impeded due to several …

A urea biosensor prepared by covalent binding of urease directly to the surface of an
ammonium-sensitive field effect transistor (FET) is described. Nonactin incorporated in …

Considerable interest in the analysis of urea in clinical, environmental and industrial
samples has generated diverse research activities in the fabrication of urea biosensors over …

The article presents a novel, disposable paper–dielectric urea sensor that uses adhesive
copper tapes as electrodes. The electrodes are coated with layers of wax, urease, and poly …