Metallocene-mediated amperometric biosensors for one-shot glucose determination

Autor: A. Kaisheva, P. Atanasov, S. Gamburzev, I. Iliev
Rok vydání: 1992
Předmět:
Zdroj: Sensors and Actuators B: Chemical. 8:59-64
ISSN: 0925-4005
DOI: 10.1016/0925-4005(92)85009-l
Popis: Amperometric biosensors for the determination of glucose based on carbon black screen-printed on ceramics are described. The mediators, nickelocene, ferrocene and their derivatives, are used for the conjunction of glucose oxidase-catalysed oxidation of glucose and electrochemical reaction at the applied potential. It is shown that the nickelocene-mediated glucose oxidase electrode exhibits a similar behaviour to that mediated with ferrocene. However, the quasi-redox potential of nickelocene/nickelocenium cation, which is by 0.3 V more negative than that of any of the investigated ferrocene derivatives, significantly lowers the operating potential of the biosensor to ≈0.00 V versus an Ag/AgCl electrode.
Databáze: OpenAIRE