Fig. 3From: Quantification of amino acids and peptides in an ionic liquid based aqueous two-phase system by LC–MS analysisDistribution ratios of a pentapeptides and b acetylated pentapeptides at pH 6.0 and 7.0 (in IL-ATPS, A alanine, L leucine, G glycine; S serine; F phenylalanine; D aspartic acid; H histidine, Ac acetylated)Back to article page