Effect of ionic strength on the formal potential of the glass electrode in various saline media

Effect of ionic strength on the formal potential of the glass electrode in various saline media

We examined the variation with ionic strength (I, adjusted with KCl, KNO(3), KBr, NaCl or NaClO(4)) of the formal potential (E(const)) for glass electrodes exhibiting a Nernstian response (i.e. E(cell)=E(const)-slog[H(+)]). For this purpose, we investigated the different factors included in the form...

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Veröffentlicht in:Talanta (Oxford) 1998-08, Vol.46 (6), p.1469-1477
Hauptverfasser: BRANDARIZ, I, VILARINO, T, ALONSO, P, HERRERO, R, FIOL, S, SASTRE DE VICENTE, M. E
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Ion selective electrodes
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Zusammenfassung:We examined the variation with ionic strength (I, adjusted with KCl, KNO(3), KBr, NaCl or NaClO(4)) of the formal potential (E(const)) for glass electrodes exhibiting a Nernstian response (i.e. E(cell)=E(const)-slog[H(+)]). For this purpose, we investigated the different factors included in the formal potential, so we obtained reported values for the liquid junction potential as a function of ionic strength and determined the logarithm of the activity coefficient for the proton in various saline media, using Pitzer equations.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(98)00022-8