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Improvement in the generation of adsorption isotherm data in the elution by characteristic points method: the ECP-slope approach.
Uppsala universitet, Institutionen för fysikalisk och analytisk kemi.
Uppsala universitet, Analytisk kemi.
Eka Chemicals AB, Separation Products,Sweden.
Uppsala universitet, Analytisk kemi.
2010 (English)In: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1217, no 46, 7215-7221 p.Article in journal (Refereed) Published
Abstract [en]

The elution by characteristic points (ECP) method is a very rapid and precise method for determination of the phase system equilibrium of phase systems in broad solute concentration ranges. Thus, the method is especially suitable for rapid characterization of high efficient separation systems. One important source of error, the effects by the post-loop dispersion, was eliminated in a recent investigation. In this study, the systematic error caused by the selection of the integration starting point at concentration equal to 0 is eliminated. This is done by developing and validating a new procedure for isotherm data generation; the ECP-slope method. The method generates raw slope data of the adsorption isotherm instead of raw adsorption data by integrations as the classical ECP does. Both numerical and experimental data were used for the comparison of the classical ECP approach with the slope-ECP method.

Place, publisher, year, edition, pages
2010. Vol. 1217, no 46, 7215-7221 p.
Keyword [en]
Single component adsorption, Adsorption isotherms, Elution by characteristic points method, Slope data, The ECP-slope method
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kau:diva-35676DOI: 10.1016/j.chroma.2010.09.004ISI: 000284439800005PubMedID: 20933238OAI: oai:DiVA.org:kau-35676DiVA: diva2:818249
Available from: 2011-11-09 Created: 2015-03-23 Last updated: 2017-01-25Bibliographically approved

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Samuelsson, JörgenUndin, TorgnyFornstedt, Torgny
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CiteExportLink to record
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