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Ion transfer across water/solidified nitrobenzene interface as amperometric flow detector
Author(s) -
Wang Erkang,
Ji Huamin
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.1140010112
Subject(s) - nitrobenzene , amperometry , chemistry , tetramethylammonium , detection limit , chromatography , polyvinyl chloride , phase (matter) , ion , analytical chemistry (journal) , inorganic chemistry , electrode , electrochemistry , organic chemistry , catalysis
The response characteristics of several ions, usually considered as electroinactive, were investigated at the thin‐layer amperometric detector based on ion transfer across the interface of water/nitrobenzene solidified by polyvinyl chloride and agar. The influence of some factors, such as applied potential, flow rate of mobile phase, and organic solvent in mobile phase, was studied by flow injection analysis of cations (choline, acetylcholine, tetramethylammonium, tetrabutylammonium, and cesium) and anions (ClO 4 − , IO 4 − , and ReO 4 − ). The detection limit of the flow injection amperometric detector is in the range of 4 to 40 ng of these ions. Reversed‐phase chromatographic separation of choline and acetylcholine with amperometric detection was demonstrated.