Simultaneous Determination of 32 Pyrrolizidine Alkaloids in Two Traditional Chinese Medicine Preparations by UPLC-MS/MS

Figure 2

UPLC-MS/MS chromatogram of XYT: (a) 50 ppb standard solution (mixed with XYT blank solution), (b) XYT blank solvent, and (c) XYT blank solution. For the abbreviations of the compounds, see 2.1 Standards.

(a)

(b)

(c)