Comparative HILIC/ESI-QTOF-MS and HPTLC studies of pyrrolizidine alkaloids in flowers of Tussilago farfara and roots of Arnebia euchroma
Keywords: PAs; pyrrolizidine alkaloids; PANOs; pyrrolizidine alkaloid-N-oxides; TF; Tussilago farfara; AE; Arnebia euchroma; HILIC; hydrophilic interaction liquid chromatography; ESI-QTOF-MS; electrospray ionization quadruple time-of-flight mass spectrometry; TCM;