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Title: Selective silver ion transfer voltammetry at the polarised liquid vertical bar liquid interface
Authors: Sherburn, Amanda
Platt, Mark
Arrigan, Damien W.M.
Boag, Neil M.
Dryfe, Robert A.W.
Issue Date: 2003
Publisher: © Royal Society of Chemistry
Citation: SHERBURN, A., PLATT, M. and ARRIGAN, D.W.M. ... et al, 2003. Selective silver ion transfer voltammetry at the polarised liquid vertical bar liquid interface. Analyst, 128 (9), pp.1187-1192.
Abstract: Transfer of silver ions across the water¡1,2-dichloroethane interface was studied by cyclic voltammetry (CV). In the absence of added neutral ionophore, Ag+ transferred across the interface when the organic phase contained either tetraphenylborate or tetrakis(4-chloro)phenylborate anions, but this transfer was not possible in the presence of organic phase hexafluorophosphate or perchlorate anions. The ion transfer processes observed were independent of the nature of the organic phase cation. The CV in the presence of tetraphenylborate exhibited a shape consistent with an ion transfer followed by chemical reaction; the rate constant for the following chemical reaction was 0.016 s21. In the presence of tetrakis(4-chloro)phenylborate, a return peak equivalent in magnitude to the forward peak was observed, indicative of a simple ion transfer reaction uncomplicated by accompanying chemical reactions. The selectivity of the transfer was assessed with respect to other metal cations: no transfers for copper, cadmium, lead, bismuth, cobalt, nickel, palladium or zinc were observed. The selectivity of the transfer suggests this can form the basis of a selective voltammetric methodology for the determination of silver ions.
Description: This article is closed access.
Version: Closed access
DOI: 10.1039/b301832f
URI: https://dspace.lboro.ac.uk/2134/11314
Publisher Link: http://dx.doi.org/10.1039/b301832f
ISSN: 0003-2654
Appears in Collections:Closed Access (Chemistry)

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