Fingerprint analysis of phenolic acid extract of Salvia miltiorrhiza by digital reference standard analyzer with one or two reference standards

Table 5 Conditions of different methods

Compounds	1	2	3	4	5	6	7	8	9	10	11
RRT(RRT method, RRT + PDA method )	0.174	0.316	0.423	0.644	0.679	0.830	0.910	1.000a	1.286	1.365	1.523
St_R/min (LCTRS method, LCTRS + PDA method)	2.980	5.406	7.071^a	11.030	11.640	14.210	15.580	17.130	22.030a	23.370	26.090

t_R windows of RRT method and LCTRS method were both 0.8 min; for RRT combined with PDA method and LCTRS combined with PDA method, t_R windows were both 1.5 min, thresholds were both 0.95
^areference compound

ISSN: 1749-8546