Parameters | Description | Units |
[Et] | Total active enzyme concentration in the matrix | mmol/L |
[Eox] | Enzyme concentration of the oxidized mediator | mmol/L |
[ES] | Enzyme concentration of the substrate | mmol/L |
[Ered] | Reduced enzyme concentration | mmol/L |
[O2] | Concentration of oxygen at any position in the enzyme layer | mmol/L |
[O2]b | Oxygen concentration in the bulk electrolyte | mmol/L |
[S] | Concentration of substrate at any position in the enzyme layer | mmol/L |
[S]b | Substrate concentration in the bulk electrolyte | mmol/L |
[Medox] | Concentration of oxidised mediator at any position in the enzyme layer | mmol/L |
[Medox]b | Oxidised mediator concentration in the bulk electrolyte | mmol/L |
Do | Diffusion coefficient of oxygen | cm2∙s−1 |
Ds | Diffusion coefficient of substrate | cm2∙s−1 |
Dm | Diffusion coefficient of mediator | cm2∙s−1 |
d | Enzyme layer thickness | cm |
y | Distance from the electrode | cm |
k1, k4, k5 | Rate constants | L∙mol−1∙s−1 |
k2, k3 | Rate constants | s−1 |
Ko | Partitioning coefficient for oxygen | None |
Ks | Partitioning coefficient for substrate | None |
Km | Partitioning coefficient for mediator | None |
Bo | Normalized surface concentration of oxygen | None |
Bs | Normalized surface concentration of the substrate | None |
Bm | Normalized surface concentration of mediator | None |
Fo | Normalized oxygen concentration | None |
Fs | Normalized substrate concentration | None |
Fm | Normalized mediator concentration | None |
x | Normalized distance from the electrode | None |
Jox | Normalized current | None |