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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Anal Bioanal Chem. 2016 Jul 1;408(22):6079–6091. doi: 10.1007/s00216-016-9716-4

Fig. 6. Extracted ion chromatograms of proteinogenic amino acids obtained with methods B (left panel) and E (right panel).

Fig. 6

Hydrophobic amino acids elute earlier and highest retention times are observed for basic amino acids lysine (Lys) and arginine (Arg).