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Determination of the accessible volume and the interaction parameter in the adsorption mode of liquid chromatography

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Title: Determination of the accessible volume and the interaction parameter in the adsorption mode of liquid chromatography
Authors: Trathnigg, Bernd1 bernd.trathnigg@uni-graz.at, Skvortsov, Alexander2
Source: Journal of Chromatography A. Sep2006, Vol. 1127 Issue 1/2, p117-125. 9p.
Subjects: Separation (Technology), Chromatographic analysis, Surface chemistry, Alcohols (Chemical class)
Abstract: Abstract: The main physical parameters in liquid chromatography of oligomers—the accessible volume and the adsorption interaction parameter—are discussed. It is shown, that in liquid adsorption chromatography (LAC) there is a linear relation between elution volume and the distance of two subsequent peaks of a homologous series. From the intercept of the regression lines in such a plot the accessible volume can be easily determined at any mobile phase in LAC (corresponding to conditions of weak or strong adsorption) without any information about the molar mass of the peaks. From the slope of this dependence the adsorption interaction parameter of a given repeat unit can be obtained. The accurate determination of the accessible volume and the adsorption interaction parameter in the LAC regime is presented for PEG, PPG and fatty alcohols on various reversed phase columns with different pore size in methanol–water or acetone–water mobile phases. The difference between the void volume, the dead volume or hold-up volume (from the solvent peak position) and the acessible volume (obtained by this procedure) is discussed. [Copyright &y& Elsevier]
Copyright of Journal of Chromatography A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 22133103
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Determination of the accessible volume and the interaction parameter in the adsorption mode of liquid chromatography
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  Data: <searchLink fieldCode="AR" term="%22Trathnigg%2C+Bernd%22">Trathnigg, Bernd</searchLink><relatesTo>1</relatesTo><i> bernd.trathnigg@uni-graz.at</i><br /><searchLink fieldCode="AR" term="%22Skvortsov%2C+Alexander%22">Skvortsov, Alexander</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Chromatography+A%22">Journal of Chromatography A</searchLink>. Sep2006, Vol. 1127 Issue 1/2, p117-125. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Separation+%28Technology%29%22">Separation (Technology)</searchLink><br /><searchLink fieldCode="DE" term="%22Chromatographic+analysis%22">Chromatographic analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+chemistry%22">Surface chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Alcohols+%28Chemical+class%29%22">Alcohols (Chemical class)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The main physical parameters in liquid chromatography of oligomers—the accessible volume and the adsorption interaction parameter—are discussed. It is shown, that in liquid adsorption chromatography (LAC) there is a linear relation between elution volume and the distance of two subsequent peaks of a homologous series. From the intercept of the regression lines in such a plot the accessible volume can be easily determined at any mobile phase in LAC (corresponding to conditions of weak or strong adsorption) without any information about the molar mass of the peaks. From the slope of this dependence the adsorption interaction parameter of a given repeat unit can be obtained. The accurate determination of the accessible volume and the adsorption interaction parameter in the LAC regime is presented for PEG, PPG and fatty alcohols on various reversed phase columns with different pore size in methanol–water or acetone–water mobile phases. The difference between the void volume, the dead volume or hold-up volume (from the solvent peak position) and the acessible volume (obtained by this procedure) is discussed. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Chromatography A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.chroma.2006.05.099
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 117
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      – SubjectFull: Separation (Technology)
        Type: general
      – SubjectFull: Chromatographic analysis
        Type: general
      – SubjectFull: Surface chemistry
        Type: general
      – SubjectFull: Alcohols (Chemical class)
        Type: general
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      – TitleFull: Determination of the accessible volume and the interaction parameter in the adsorption mode of liquid chromatography
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              Text: Sep2006
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