Premium
Solvent‐Polymeric ISEs Tailored for Measurements in Solutions Containing Tetrabutylammonium, Cesium, and Calcium Ions
Author(s) -
Grekovich Alexander L.,
Alekseeva Maria V.,
Schulze KlausDieter,
Mikhelson Konstantin N.
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603569
Subject(s) - chemistry , caesium , selectivity , ion , inorganic chemistry , formamide , membrane , calcium , aqueous solution , solvent , ion selective electrode , analytical chemistry (journal) , chromatography , organic chemistry , catalysis , biochemistry
Ion‐selective electrodes are described, with membranes tailored for measurements of tetrabutylammonium ions in aqueous and formamide solutions, and for measurements of cesium and calcium ions in the presence of tetrabutylammonium. It is shown that reliable measurements of cesium ions are possible when a correction is introduced for interference from tetrabutylammonium, using Nikolsky selectivity coefficient. A novel membrane composition is described which ensures high selectivity to calcium ions over tetrabutylammonium.