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Potentiometrische Bestimmung von Einzelionenaktivitätskoeffizienten wässriger Elektrolyte mit Hilfe ionenselektiver Elektroden / Potentiometric Determination of Single Ion Activity Coefficients of Aqueous Electrolyte Solutions Using Ion Selective Electrodes

Single ion activity coeffients of NaCl, KCl, HCl and CaCl2 in aqueous solution have been estimated by means of ion selective electrode (ISE) potentiometric measurements. Two methods are described for the calibration of the electrodes within the extended Debye-Hückel concentration range, using the Henderson-Bates approximation for the diffusion potential arising at the reference electrode. The consistency of the results indicates that the junction potentials in the examined systems calculated by the Henderson-Bates approximation are of reasonable precision. The published methods and data might be useful to develop single ion parameters for individual ion activity coefficient models.

Identiferoai:union.ndltd.org:DUETT/oai:DUETT:duett-02112005-091206
Date11 February 2005
CreatorsSchneider, Armin Conrad
ContributorsProf. Dr. rer. nat. Jan-Dirk Herbell, Prof. Dr. rer. nat. Christian Mayer
PublisherGerhard-Mercator-Universitaet Duisburg
Source SetsDissertations and other Documents of the Gerhard-Mercator-University Duisburg
LanguageGerman
Detected LanguageEnglish
Typetext
Formatapplication/octet-stream, application/pdf, text/html
Sourcehttp://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-02112005-091206/
Rightsunrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. Hiermit erteile ich der Universitaet Duisburg das nicht-ausschliessliche Recht unter den unten angegebenen Bedingungen, meine Dissertation, Staatsexamens- oder Diplomarbeit, meinen Forschungs- oder Projektbericht zu veroeffentlichen und zu archivieren. Ich behalte das Urheberrecht und das Recht das Dokument zu veroeffentlichen und in anderen Arbeiten weiterzuverwenden.

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