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Total-ion chromatograms of standard and sample by UHPLC- Q/Exactive. (A) The mix standard solution. (B) The chromatographic profile of WCAF extracts [Stationary phase: Waters Acquity HSS T3 (100 × 2.1 mm, 1.8 μm); mobile phase: aqueous 0.1% formic acid (I) and acetonitrile (II) (0–2 min, 2%II; 2–12 min, 2–-45%II)].
