Utilization of Lipophilic Ionic Additives in Liquid Polymer Film Optodes for Selective Anion Activity Measurements

摘要

Lipophilic anionic and cationic additives are investigated as components for use in liquid polymer film-based optodes. These ionic additives are known to strongly influence the selectivity behavior of anion-selective elec- trodes. They also make it possible to construct ion coextraction optodes that can measure anion activities. Theoretical, thermodynamic anion-optode equilibria for- malisms were derived to help understand the influence these additives have on the overall optode response and on the selectivity behavior.