Fig. 7From: The analysis of the Saltzman Collection of Peruvian dyes by high performance liquid chromatography and ambient ionisation mass spectrometryChromatogram for Kageneckia lanceolata sample showing the main components rutin and quercetin, and the presence of several species with the same raw formula. a Total ion chromatogram, b–d selected ion chromatograms for the molecular formulas shown. QToF fragmentation spectra are provided in Additional file 1: Figures S1–3. The peak labeled c in a is a contaminantBack to article page