Arrays of crystalline membrance ion-selective electrodes in flow injection potentiometry

dc.contributor.advisorvan Staden, Jacobus F.
dc.contributor.postgraduateMalan, Daniel
dc.date.accessioned2022-05-17T11:20:04Z
dc.date.available2022-05-17T11:20:04Z
dc.date.created2021/09/13
dc.date.issued1997
dc.descriptionDissertation (MSc)--University of Pretoria, 1997.
dc.description.abstractUsing multiple low-cost detectors in flow injection analysis can reduce the cost per analysis. Ion-selective electrodes make good detectors, and electrodes with crystalline membranes often need little maintenance. The response of chloride, bromide, and iodide selective electrodes to the mutually interfering chloride and bromide are modeled by the Nikolskii equation. It is shown that, although the Nikolskii equation do not model the electrode potentials without bias, the precision of the predicted concentrations are determined more by the error propagation properties of the calibration procedure than by the lack of fit of the model to the experimental potentials. Fluoride- and chloride-selective electrodes detect the non-interfering chloride and fluoride ions. The properties of a flow-injection system for the routine determination of fluoride and chloride were investigated and it was found that the flow-cell geometry, electrical earth connection, and streaming potentials influence the quality of analysis.
dc.description.availabilityUnrestricted
dc.description.degreeMSc
dc.description.departmentChemistry
dc.identifier.citation*
dc.identifier.urihttps://repository.up.ac.za/handle/2263/85310
dc.language.isoen
dc.publisherUniversity of Pretoria
dc.rights© 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.
dc.subjectUCTD
dc.subjectCrystalline membrance
dc.subjection-selective electrodes
dc.subjectflow injection potentiometry
dc.titleArrays of crystalline membrance ion-selective electrodes in flow injection potentiometry
dc.typeDissertation

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