7Wang S, Hao L J, Zhu J J, et al. Study on the effects of sulfur fumigation on chemical constituents and antioxidant activity of Chrysanthemum morifolium cv. Haug-ju [ J ] . Phytomedicine, 2014, 21(5): 773.
8MaXQ, LeungA K, Chan C L, et al. UHPLC UHD Q-TOF MS/MS analysis of the impact of sulfur fumigation on the chemi- cal profile of Codonopsis Radix (Dang shen ) [ J ]. Analyst, 2014, 139(2) : 505.
9Hayes P Y, Lehmann R, Penman K, et al. Sodium paeoniflorin sulfonate, a process derived artifact from paeoniflorin [ J ]. Tetra- hedron Lett, 2005 46(15) : 2615.
10Li S L, Song J Z, Choi F F K, et al. Chemical profiling of Radix Paeoniae evaluated by ultra-performance liquid chromatography/ photodiode array/quadrupole time-of-flight mass spectrometry [J]. J Pharm Biomed Anal, 2009, 49(2) : 253.