Potentiometric glucose sensors.
The determination of glucose is possible with the enzymatic reaction of glucose oxidase and potentiometric detection. The signal is proportional to the concentration up to 50 mg/dl. This value is fixed by the concentration of oxygen in the sample. By adding catalase, concentrations up to 2000 mg/dl are detectable. The steepness of the calibration curve is not affected by oxygen concentrations greater than 4 mg/l. In contrast to amperometric sensors, an influence of deposits on the electrodes surface on the signal cannot be found with potentiometric sensors.
Honold
F
F
Wissenschaftlich Technische Werkstätten GmbH, Weilheim, Germany.
Cammann
K
K
D015374:Biosensing Techniques; D002374:Catalase; D004566:Electrodes; D005947:Glucose / Q000032:analysis*; D005949:Glucose Oxidase; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000494:pharmacology; D011199:Potentiometry
D005949:Glucose Oxidase; D002374:Catalase; D005947:Glucose; D010100:Oxygen