Chromatography in aqueous solution on styrene-divinylbenzene resins

The ability of porous styrene-divinylbenzene polymers to adsorb aromatic compounds from aqueous solutions decreases on prolonged use in aqueous media, the decrease being related to shrinkage of the resin. The capacity can be restored by treatment with aqueous ethanol. The resins are unsuitable for d...

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Bibliographic Details
Published in:Journal of Chromatography A 1980-05, Vol.193 (2), p.197-206
Main Authors: Jahangir, Lutful Majid, Samuelson, Olof
Format: Article
Language:English
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Summary:The ability of porous styrene-divinylbenzene polymers to adsorb aromatic compounds from aqueous solutions decreases on prolonged use in aqueous media, the decrease being related to shrinkage of the resin. The capacity can be restored by treatment with aqueous ethanol. The resins are unsuitable for difficult separations in aqueous eluents but are useful for the concentration of solutes from aqueous solutions and for separations of organic solutes into groups. Aromatic acids, phenolic aldehydes and phenols are retained in 5 m M sulphuric acid while carbohydrates pass into the effluent. The aromatic compounds are separated in groups of increasing acid strength by displacement with Tris, sodium carbonate buffers and sodium hydroxide. Complications occur when the aromatic acids or aldehydes are strongly hydrophobic.
ISSN:0021-9673
DOI:10.1016/S0021-9673(00)81487-9