Sodium ion-selective electrodes based on silicone-rubber membranes covalently incorporating neutral carriers
Abstract
Neutral carriers, such as 16-crown-5 and calix[4]arene tetraester, were immobilized on silicone-rubber membranes by covalent bonding. Sodium ion-selective electrodes based on silicone-rubber membranes modified chemically by the calixarene ionophore together with an anion excluder exhibited high performance in terms of sensitivity, selectivity and response time.