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Ion-exclusion chromatography of benzenecarboxylic acids on an unmodified silica-gel column
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In order to demonstrate the effectiveness of two unmodified silica-gel (Develosil 30-5) columns (300×7.8 mm I.D.) used in series for the ion-exclusion chromatographic separation of mono-, di, tri- and tetrabenzenecarboxylic acids, the elution behavior of benzenecarboxylic acids and phenol was investigated. When using water as an eluent, many benzenecarboxylic acids were co-eluted and the separation was not satisfactory. However, when using 5 mM sulfuric acid (pH 2.0) as the eluent, excellent separation and high detection sensitivities for many benzenecarboxylic acids and phenol were achieved in 40 min using UV detection at 200 nm.
|Keywords:||Benzenecarboxylic acids; Carboxylic acids|
|Journal or Publication Title:||Journal of Chromatography A|
|Page Range:||pp. 33-40|
|Identification Number - DOI:||10.1016/S0021-9673(97)00523-2|
The definitive version is available at http://www.sciencedirect.com
|Date Deposited:||18 Nov 2008 23:04|
|Last Modified:||18 Nov 2014 03:53|
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