In this paper, an amperometric glucose biosensor is modeled numerically. The model is based on non-stationary reaction-diffusion type equations. The model consists of four layers. An enzyme layer lies directly on a working electrode surface. The enzyme layer is attached to an electrode by a polyvinyl alcohol (PVA) coated terylene membrane. This membrane is modeled as a PVA layer and a terylene ...

Forty years have passed since Clark and Lyons proposed the concept of glucose enzyme electrodes. Excellent economic prospects and fascinating potential for basic research have led to many sensor designs and detection principles for the biosensing of glucose. Indeed, the entire field of biosensors can trace its origin to this glucose enzyme electrode. This review examines the history of electroc...

a rapid isocratic method of high performance liquid chromatography system (hplc) with a glassy carbon working electrode of electrochemical detector is set up for quantitative detection of  trace amount of nitrite ion (no2¯) in aqueous protein containing cell lysate, cell media, plasma, serum, urine and other body fluids. the solid extraction  reversed phase cartridges (sep-pak) are used for dep...

A novel enzyme electrode system for glucose oxidation was constructed by co-immobilization of dehydrogenase (GDH) and N,N’-diphenyl-p-phenylenediamine (DPPD) on carbon electrodes. This applied to porous fabric produce a current 7 mA/cm2, while the catalytic activity maintained at approximately 100% more than 4 h, indicating that DPPD molecules were stably retained electrodes during continuous r...

61 (continued on next page) can be estimated. This process requires not only a model for transport in the system, but also a model for the kinetics, in terms of the relationship between driving force and the kinetically-controlled rate. Similarly, the desire to build real-world systems with bioelectrocatalysts requires engineering approaches to predict realworld performance, including the effec...