Comparison of IDA, SWATH, and MS ALL techniques in the analysis of compounds of Huangqi Guizhi Wuwu decoction by UHPLC–Q‐TOF–MS

Huangqi Guizhi Wuwu decoction (HGWD) is an effective traditional Chinese medicine prescription, which is used for treating blood arthralgia in the clinic. However, its material basis has not been studied yet. Herein, a new and highly sensitive ultra‐high‐performance liquid chromatography–quadrupole‐time of flight–MS (UHPLC–Q‐TOF–MS) technique is proposed and used for the high‐resolution and accurate identification of the material basis of HGWD. Seventy‐eight compounds have been identified in HGWD. The advantages of information‐dependent acquisition (IDA), sequential window acquisition of all theoretical fragment‐ion spectra (SWATH), and MS ALL in the quantitative and qualitative analyses of compounds were compared. For the identification of compounds, the best mode with the highest accuracy is the IDA. For the quantification of compounds, MS ALL shows the best repeatability and linearity. This research provides a theoretical basis for the study of quality control of traditional Chinese medicine preparations.