Transient response of electrochemical biosensors with asymmetrical sandwich membranes
I Iliev, P Atanasov, S Gamburzev, A Kaisheva… - Sensors and Actuators B …, 1992 - Elsevier
A mathematical model of a sandwich membrane biosensor operating in the diffusion-limited
regime is proposed. The enzyme (oxidase) is immobilized between two diffusion
membranes with different thicknesses. The electrochemically active product of the enzymatic
reaction (H 2 O 2) is detected on a catalytic electrode. The exact transient solution of the
model is obtained under the assumptions of diffusion-limited enzymatic and electrochemical
reactions, a stepwise increase of the substrate concentration (from 0 to CG°) and zero …
regime is proposed. The enzyme (oxidase) is immobilized between two diffusion
membranes with different thicknesses. The electrochemically active product of the enzymatic
reaction (H 2 O 2) is detected on a catalytic electrode. The exact transient solution of the
model is obtained under the assumptions of diffusion-limited enzymatic and electrochemical
reactions, a stepwise increase of the substrate concentration (from 0 to CG°) and zero …
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