[Identification study of different Flos Trollii by IR].

Objective: To establish a method to identify different Flos Trollii with IR spectra and to provide a new technique for their science estimation and quality identification.

Methods: Their IR spectra were obtained by the method of intuitionistic analysis-selecting point to normalization.

Results: Differences on the shape, the position, the height and the relative intensity of absorption peaks were shown in IR spectra of the ten samples.

Conclusions: Different Flos Trollii can be identified using IR spectra obtained by the method of intuitionistic analysis-selecting point to normalization. This new method can be used to study the identification features of the influence factors of Traditional Chinese Medicine quality.