Abstract
Abstract The extraction of 10 phenolic acids from aqueous solutions was investigated by liquid-liquid partition chromatography using four diluents of various polarities: cyclohexane, benzene, di-n-butyl ether and diisobutyl ketone. Apparent solvation numbers were estimated from log D vs log% TBP plots. It is demonstrated that even low concentrations of TBP cause a significant increase of extraction of organic acids.
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