Simultaneous Determination of 5 Flavonoids and 7 Saponins for Quality Control of Traditional Chinese Medicine Preparation Xinnaoshutong Capsule Using HPLC-VWD-ELSD

Table 1

Linear regression data, LODs, and LOQs for the twelve compounds.

Compounds	Linear regression	Linear range (μg⋅mL^−1)		(μg⋅mL^−1)	(μg⋅mL^−1)
1		50–300	0.9993	3.3	10
2		40–600	0.9981	1.3	4
3		50–300	0.999	3.3	10
4		70–2100	0.995	2.3	7
5		52–780	09956	4.3	13
6		50–300	0.9985	3.3	10
7		16–240	0.9983	0.64	2
8		0.5–15	0.9962	0.13	0.5
9		0.5–15	0.9997	0.13	0.25
10		0.5–15	0.9993	0.13	0.5
11		0.15–15	0.9999	0.13	0.25
12		0.15–15	0.9999	0.15	0.25

is the peak area in UV chromatograms monitored at 360 nm, is the compound concentration injected, and and are the logarithmic values of area and concentration injected in ELSD chromatograms.
LOD refers to the limits of detection.
LOQ refers to the limits of quantification.