CARBON-PASTE BIOSENSORS ARRAY FOR LONG-TERM GLUCOSE MEASUREMENT

An amperometric glucose biosensor based on a new mediator and carbon p aste acts at 0.08 V vs. an Ag/AgCl electrode in situ and exhibits a li near response up to 16 mM of glucose. The measurements are performed o n freshly renovated electrode surfaces, and every sensor can be used f or 100 measurements. The long-term stable biosensors were obtained usi ng stabilized glucose oxidase and an array of biosensors. The applicat ion of a chemometric method permits exploitation of the biosensor duri ng a period of more than 166 days at 35-degrees-C and relative humidit y 75%. The relative error of chemometric prediction was less than 5.4% , and the response changes less than 0.15% per week.