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Gibbs-Donnan and Specific Ion Interaction Theory Descriptions of the Effect of Ionic Strength on Proton Dissociation of Alginic Acid
dc.contributor.author | Rey-Castro, Carlos | |
dc.contributor.author | Herrero, Roberto | |
dc.contributor.author | Sastre de Vicente, Manuel | |
dc.date.accessioned | 2005-11-03T20:35:54Z | |
dc.date.available | 2005-11-03T20:35:54Z | |
dc.date.issued | 2004 | |
dc.identifier.citation | Journal of electroanalytical chemistry, 2004, vol. 564, p. 223-230 | es_ES |
dc.identifier.issn | 1572-6657 | |
dc.identifier.uri | http://hdl.handle.net/2183/173 | |
dc.description.abstract | [Abstract] The apparent proton dissociation constants of a commercial alginic acid have been obtained in KNO3 and NaCl at concentrations ranging between 0.01 and 2 mol·L-1. An analysis of the dependence on the ionic strength at a constant value of the dissociation degree was done by means of empirical functions derived from the Gibbs-Donnan formalism for polyelectrolytes and a specific ion interaction theory (SIT). Both functions were able to fit the experimental data, although SIT yielded rather high errors in the fitted parameters due to a problem of multicollinearity, in contrast to the function derived from the Gibbs-Donnan approach. | es_ES |
dc.description.sponsorship | Ministerio de Ciencia y Tecnología; BQU2002-02133 | |
dc.description.sponsorship | Xunta de Galicia; PGDIT02TAM10302PR | |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.uri | https://doi.org/10.1016/j.jelechem.2003.10.023 | es_ES |
dc.subject | Potentiometry | es_ES |
dc.subject | Gibbs-Donnan model | es_ES |
dc.subject | Specific ion interaction theory | es_ES |
dc.subject | Alginic acid | es_ES |
dc.subject | Equilibrium constants | es_ES |
dc.title | Gibbs-Donnan and Specific Ion Interaction Theory Descriptions of the Effect of Ionic Strength on Proton Dissociation of Alginic Acid | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |