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. 2020 Feb 7;15(2):e0228822. doi: 10.1371/journal.pone.0228822

Fig 1. MS/MS mass spectra of analytes with their chemical structures and identification of the fragment ions used for the present method.

Fig 1

(a) PALBO, recorded with CE = 50 V; (b) RIBO, recorded with CE = 37 V; (c) LETRO, recorded with CE = 30 V.