Building method of HPLC characteristic chromatogram of radix paeoniae alba and detection method of radix paeoniae alba

The invention discloses a building method of an HPLC characteristic chromatogram of radix paeoniae alba and a detection method of radix paeoniae alba. For a quality control problem of radix paeoniae alba, a sulfur-containing radix paeoniae alba HPLC characteristic chromatogram and a sulfur-free radix paeoniae alba HPLC characteristic chromatogram are built, and a high performance liquid chromatography-mass spectrometry analytic method is adopted to analyze and identify ingredients of sulfur-containing radix paeoniae alba and sulfur-free radix paeoniae alba. Whether radix paeoniae alba is fumigated with sulfur or not is judged by adopting the built HPLC characteristic chromatogram of radix paeoniae alba to identify a paeoniflorin sulfite product which is produced after dry sulphitation of radix paeoniae alba. Compared with a conventional sulfur dioxide detection method, the detection method provided by the invention is simple, high in sensitivity, strong in specificity and excellent inreproducibility, can be u