Monte Carlo simulation to reveal the copper dissolution kinetics of an ion selective electrode based on copper sulfide

► Modelling of a large number of microscopic dissolution events to explain the mass spectroscopy response. ► Assess to surface state dynamics to compare the predictions with observed using conventional techniques. ► Kinetics of dissolution evolves as long as the membrane is exposed to the solution. ► An exponential dissolution probability profile is predicted to match the experimental response. ► Numerical predictions suggest change in the dynamics of interface exchanges.