Summary
Reversed-phase liquid chromatography on two stationary phases—octadecylbonded silica Partisil ODS-3 and polystyrene-divinylbenzene resin PRP-1—and potentiometric titration in the water/methanol mobile phase were investigated in order to determine the dissociation constants of three weakly basic aroma compounds, namely trimethyl pyrazine, 2,4-dimethyl thiazole and methyl anthranilate. The data obtained from both methods are quite consistent and compare favourably to values found in the literature.
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Bitteur, S., Rosset, R. Chromatographic and potentiometric determination of dissociation constants of weakly basic Aroma compounds. Chromatographia 27, 194–200 (1989). https://doi.org/10.1007/BF02260445
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DOI: https://doi.org/10.1007/BF02260445