Determination of alkali metal ions by flow-injection amperometry at the interface of two immiscible electrolyte solutions in the presence of dicyclohexyl-18-crown-6

Authors
Dunaeva, AA Wilke, S Kolycheva, NV Petrukhin, OM Muller, H
Citation
Aa. Dunaeva et al., Determination of alkali metal ions by flow-injection amperometry at the interface of two immiscible electrolyte solutions in the presence of dicyclohexyl-18-crown-6, J ANALYT CH, 54(5), 1999, pp. 438-441
Citations number
8
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
10619348 → ACNP
Volume
54
Issue
5
Year of publication
1999
Pages
438 - 441
Database
ISI
SICI code
1061-9348(199905)54:5<438:DOAMIB>2.0.ZU;2-2
Abstract
An amperometric dicyclohexyl-18-crown-6-based ion-selective electrode with a hydrophilic membrane was used as a sensor for the determination of K, Na, and Rb in flow-injection analysis. A comparison between the amperometric f low method and voltammetry at the interface of two immiscible electrolyte s olutions shows that the first method outperforms the second in both the sel ectivity and sensitivity of determination.