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Ion exchange voltammetry with electroactive ionomers
Author(s) -
Espenscheid Mark W.,
Martin Charles R.
Publication year - 1989
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.1140010115
Subject(s) - analyte , ionomer , electrode , cyclic voltammetry , substrate (aquarium) , materials science , electrochemistry , voltammetry , electroactive polymers , ion exchange , analytical chemistry (journal) , ion , detection limit , polymer , chemistry , chromatography , composite material , organic chemistry , oceanography , copolymer , geology
Ion exchange voltammetry is a newly proposed electroanalytical technique that uses an ionomer film coated onto an electrode surface to separate and preconcentrate an analyte ion prior to electrochemical determination at the substrate‐electrode surface. One problem with this proposed technique is that after analysis, the ionomer film is loaded with the analyte ion, and this ion must be removed prior to subsequent analyses. In this paper, we show that this film regeneration step can be accomplished electrochemically using a new type of electroreleasing polymer called an electroactive ionomer. Furthermore, we show that these electroactive ionomer film‐coated electrodes can preconcentrate an analyte cation at the substrate‐electrode surface, thus producing markedly better detection limits than analogous uncoated electrodes.