A solid-state ion-selective electrode membrane preparation based on benzyldimethyltetradecylammonium dithiosulphatoargentate

Abstract

A technique for preparing a solid-state ion-selective electrode membrane based on benzyldimethyltetradecylammonium dithiosulphatoargentate has been investigated and the performance of the Ag(S₂O₃)₂^3–-sensitive electrode constructed from this membrane has been assessed. Microscopic examination of the material showed that when freshly prepared, it was amorphous and insensitive to Ag(S₂O₃)₂^3– ions. Over a period of time, extensive crystal growth occurred and the membrane subsequently responded selectively to Ag(S₂O₃)₂^3– ions between 10^–5 and 10^–2M activity.