Ponnan Exclusion Failure of Neutral Ionophore-Based Ion-Selective Electrodes Studied by Optical Second-Harmonic Generation

摘要

Optical second harmonic generation (SHG) at the liquid- liquidinterfaces of ionophore-free and neutral ionophore- incorporatedmembranes has been measured in the presence and absence of ionicsites in ofder to better understand the influence of ionic sites onthe potentio- metric responses of liquid membrane ion-selective elec-trodes. Quick and lasting EMF and SHG response were observed uponincreasing the primary ion cativity in aqueous solutions in contactwith membranes with ionic sites.