The difference with the previous method is that now the two-electron peaks are fit to the equation derived by Laviron [7] (equivalent to eqs. (A5-A7) in ref [3]) adjusting the average two-electron reduction potential and the difference between the reduction potentials of each one-electron step (a negative value means that the two one-electron potentials are crossed).

The total current is the sum of the individual contributions of the centers:

(3) |

One-electron peaks are fit to:

(4) |

adjusting the one-electron reduction potentials . Two-electron peaks are fit to:

adjusting the two-electron reduction potential , and the value of .

NB: the values of ns must equate 1 or 2, and must be FIXED during the fit.

You set the initial parameters following the instructions on screen: for each peak, you have to click where you guess its position is and enter the value of the stoichiometric number of electrons (1 or 2).