Identification and Simultaneous Determination of the Main Toxical Pyrrolizidine Alkaloids in a Compound Prescription of Traditional Chinese Medicine: Qianbai Biyan Tablet

Figure 3

Chromatogram of total MS/MS fragment ion of 366 of QT produced by Baiyunshan Company. Except PA1 (RT 5.79 min), PA2 (RT 11.81 min), and PA3 (RT 14.10 min), other peaks in the chromatogram are non-PAs constituents.