To clear up the confusion that exists in the usage of Multi-origin ChineseDrugs is one of the key parts of the standardization of Traditional ChineseMedicines (TCMs). In this dissertation, some different plants used as the samedrug (XIXIN) were studied by modern characteristic methods to reveal thedifference of those plants in chemical composition and then to define a uniqueplant as the origin of XIXIN.
Gas chromatography/qudrapole mass spectrometry (GC/qMS) and Gaschromatography/time-of-flight mas...