Abstract: The peak current equation for irreversible process on a spherical electrode in a stirred solution for linear sweep adsorption voltammetry, corresponding to the case of a strong adsorption, can be expressed as follows i_p=i_p(t_a)+i_p(t_r)=K'vD²/³r_o²v^-1/⁶ω^1/2t_aC^*+i_p(t_r) where i_p(t_a) is the peak current for the preconcentration time (t_a) in a stirred solution; i_p(t_r) is the peak current for the rest period, t_r,v is the scan rate; D is the diffusion coefficient; r_o is the radius of the spherical electrode; ω is the angular velocity of the solution; v is the kinematic viscosity, C^* is the bulk concentration of the, depolarizer; K' is a constant. The equation has been verified experimentally for system of Co(Ⅱ)-dimethylglyoxime in NH₃/NH₄Cl.

Key words: Linear sweep adsorption voltammetry, Peak current equation