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

Table 4

Analytical results of precision, stability, and reproducibility tests of 20 characteristic common peaks in S. miltiorrhiza (n = 6).

Peak	RSD of RRT (%)			RSD of RPA (%)
no.	Precision	Stability	Reproducibility	Precision	Stability	Reproducibility
1	1.94	1.12	1.46	2.84	2.63	1.75
2	2.83	2.46	0.65	2.33	1.23	2.31
3	0.95	0.87	0.66	1.98	0.96	0.56
4	0.56	1.88	0.34	2.13	2.67	1.63
5	0.21	2.85	0.20	0.67	1.83	1.32
6	0.13	1.99	0.16	2.63	1.52	0.65
7	0.16	0.24	0.13	2.4	1.54	2.34
8	0.12	1.23	0.09	1.93	1.68	0.97
9	0.10	2.88	0.07	1.35	1.97	0.75
10	0.09	1.23	0.06	1.63	1.17	2.31
11	0.06	1.15	0.04	0.97	2.98	0.80
12(S)	0	0	0	0	0	0
13	0.07	0.24	0.09	1.31	0.77	2.20
14	0.09	0.63	0.13	1.55	2.81	1.92
15	0.09	1.69	0.12	1.23	1.02	0.58
16	0.11	0.56	0.14	1.53	1.93	1.76
17	0.15	0.58	0.16	0.84	2.68	1.26
18	0.17	0.84	0.17	2.89	0.76	2.39
19	0.19	0.76	0.19	1.68	2.56	1.93
20	0.14	0.55	0.18	1.66	1.33	1.36

RRT represents relative retention time; RPA represents relative peak area.