Analytical Letters · 1992 · 18 citations · 11 references
EngineeringBiochemistryBiotechnologyBiosensorsElectroanalytical MethodsSensorsBiosensor DesignElectrochemical BiosensorsElectrochemical SensorsEnzymatic BiosensorsEnzyme-based BiosensorsAmperometric BiosensorsAmperometric Enzyme BiosensorsElectrochemical Enzyme SensorsMembrane ResistancePotentiometric BiosensorsPotentiometric Enzymatic BiosensorsPotentiometric Enzyme BiosensorsUrea Biosensors
Abstract The developed potentiometric urea biosensor is based on a modified PVC-nonactin NH3 -sensitive gas electrode. Membrane resistance has been optimised by incorporating lipophilic salt. The coefficient of variation for the standard urea solution is 2.45. The sensor performance has been compared with a photometric method for blood samples.
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Paul H. Weiner, Jon F. Parcher · Analytical Chemistry · 1973 · 169 citations
A specific enzyme electrode for urea
G. G. Guilbault, Mads Tarp · Analytica Chimica Acta · 1974 · 67 citations