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Abstrakty
Ion-exclusion chromatography (IEC), a chromatographic technique based on exclusion of dissociated sample molecules, finds many applications in a variety of analytical separations of weak acids. An alternative technique is vacancy ion-exclusion chromatography (v-IEC), in which the column is equilibrated with the sample solution flowing as mobile phase through the system, and pure water is injected as the sample. In this case, characteristic negative ‘vacant’ peaks are obtained. The objective of the work discussed in this paper was to investigate retention mechanisms in IEC and v-IEC for selected aliphatic acids, under analytical and concentration overload conditions, with pure water and a weakly acidic cation-exchange resin. The retention times and the peak shapes predicted by the proposed model were in a good agreement for a wide range of concentrations for all the analytes investigated in this study.
Czasopismo
Rocznik
Tom
Strony
337--356
Opis fizyczny
Bibliogr. 38 poz., rys., tab.
Twórcy
autor
- Rzeszów University of Technology Department of Chemical and Process Engineering, Chemical Faculty Powstańców Warszawy 6 35-959 Rzeszów Poland
autor
- Rzeszów University of Technology Department of Chemical and Process Engineering, Chemical Faculty Powstańców Warszawy 6 35-959 Rzeszów Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-12709a23-be06-4656-b857-ecef52ecd4d5