Reversed-phase liquid chromatography of aromatic sulphonic acids and other strongly polar compounds without addition of an ion-pairing counter-ion

Efficient separations of aromatic sulphonic acids, which are important as dye intermediates, can be achieved on chemically bonded reversed-phase columns using mobile phases containing strong inorganic electrolytes instead of organic ion-pairforming substances. The system is highly selective and allo...

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Bibliographic Details
Published in:Journal of Chromatography A 1980-09, Vol.197 (2), p.181-187
Main Authors: Jandera, Pavel, Churáček, Jaroslav
Format: Article
Language:English
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Summary:Efficient separations of aromatic sulphonic acids, which are important as dye intermediates, can be achieved on chemically bonded reversed-phase columns using mobile phases containing strong inorganic electrolytes instead of organic ion-pairforming substances. The system is highly selective and allows the rapid separation of a number of isomeric aromatic mono-, di- and trisulphonic acids. Other ionic or strongly polar substances, such as linear alkylbenzenesulphonates and water-soluble vitamins, can also be separated using this technique.
ISSN:0021-9673
DOI:10.1016/S0021-9673(00)81234-0