A Green Antioxidant Activity-Integrated Dual-Standard Method for Rapid Evaluation of the Quality of Traditional Chinese Medicine Xuebijing Injection by On-Line DPPH-CE-DAD

Table 2

The calibration curves, linearity ranges, LODs, LOQs, and recoveries of twelve compounds ().

Compounds	Regression equation		Linearity range (μg/mL)	LOD (μg/mL)	LOQ (μg/mL)	Recovery
						Average (%)	RSD (%)
Oxypaeoniflorin		0.9991	33.3–400	10.0	32.0	101.1	4.6
Hydroxysafflor yellow A		0.9999	25–600	1.2	3.8	97.4	2.9
Protocatechuic aldehyde		0.9996	4.2–50	1.2	4.1	100.1	3.5
Peoniflorin		0.9998	62.5–2000	1.5	5.0	98.2	1.4
Rosmarinic acid		0.9990	5.8–70	1.5	5.6	101.1	3.7
Salvianolic acid B		0.9995	10–120	3.0	9.4	100.1	4.5
Sodium danshensu		0.9982	13–156	4.0	13.0	99.7	4.8
Caffeic acid		0.9995	2.5–30	0.8	2.5	99.3	4.8
Ferulic acid		0.9995	2.5–60	0.8	2.5	101.9	2.7
Senkyunolide I		0.9993	20–480	5.0	17.4	97.7	3.9
Rutin		0.9990	13–156	4.0	13.0	99.5	3.9
Isoquercitrin		0.9991	11–132	3.5	11.0	102.3	2.5