Discrimination of Salvia miltiorrhiza Bunge from Different Geographical Locations Employing High-Performance Liquid Chromatography, Near-Infrared Fingerprinting Combined with Chemometrics

Figure 9

(a) Raw spectra and (b) the average raw spectra and average preprocessed spectra. 1: Sichuan, 2: Shandong, 3: Hena, and 4: Anhui.

(a)

(b)