[Determination of 14 components in Bazibushen capsule by UPLC-ESI-MS/MS]

The study developed a method for the determination of 14 components in Bazibushen capsule by UPLC-ESI-MS/MS. Waters ACQUITY BEH C(18) column (50 mm × 2.1 mm,1.7 μm) was used and the column temperature was 40 ℃.A linear gradient elution of eluents A (acetonitrile) and B（0.1% acetic acid） was used for the separation. The source temperature was set at 150 ℃.The capillary voltage was set at 2.0 k V. The source offset voltage was kept at 50 V. The desolvation temperature was set at 500 ℃.The desolvation flow was 800 L·h(-1).The cone flow was 150 L·h(-1). The nebuliser pressure was 7.0 Bar . Multiple reaction monitoring mode (MRM) is adopted. All of the 14 components showed good linearity (r2 > 0.999 1) in the test ranges. The LOQs for the compounds ranged from 0.11-4.52 ng·m L(-1), respectively.The RSDs were 0.8%-2.1%.The overall recoveries were between 97.89% and 101.9% for all compounds. The method is simple, rapid, accurate and highly reproducible, and may be used in the determination of 14 components in Bazibushen capsule.