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Ion transfer across water/solidified nitrobenzene interface as amperometric flow detector

โœ Scribed by Erkang Wang; Huamin Ji

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
492 KB
Volume
1
Category
Article
ISSN
1040-0397

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โœฆ Synopsis

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 o f mobile phase, and organic solvent in mobile phase, was studied by flow injection analysis of cations (choline, acetylcholine, tetramethylammonium, tetrabutykimmonium, and cesium) and anions (CIO;, IO,, and ReO;). The detection limit o f the flow injection amperometric detector is in the range of 4 t o 40 ng of these ions. Keversed-phase chromatographic separation of choline and acetylcholine with amperometric detection was demonstrated

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Transfer of \(\mathrm{Li}^{+}, \mathrm{Na}^{+}, \mathrm{K}^{+}, \mathrm{Rb}^{+}, \mathrm{Ca}^{2+}, \mathrm{Sr}^{2+}\), and \(\mathrm{Ba}^{2+}\) ions facilitated by hexa- and octacthylene glycol monododecyl ethers (C12E6 and C12E8) has been studied at the nitrobenzene (NB)water (W) interface using cy