Quality Evaluation of Bioactive Ingredients in Lianhua Qingwen Capsule Based on Quantitative Analysis of Multicomponent by the Single Marker Method and the Chemical Recognition Patterns Method

Table 1

Results of the investigation of the linear relationship, limit of detection (LOD), and limit of quantitation (LOQ).

Analytes	Regression equations	r	Linearity (mg/mL)	LOD (ng/mL)	LOQ (ng/mL)
NA	y = 20,000,000x − 105566	0.9997	0.019–0.487	140.2	525.8
AMY	y = 10,000,000x + 16528	0.9995	0.011–0.263	367.4	1194
CA	y = 20,000,000x − 22586	0.9995	0.013–0.330	167.8	838.8
ISF	y = 30,000,000x + 191895	0.9999	0.047–1.172	290.0	1160
FA	y = 20,000,000x + 509547	0.9996	0.145–4.355	158.9	529.5
PIN	y = 60,000,000x − 91210	0.9995	0.034–0.847	94.8	284.5
QUE	y = 60,000,000x − 153093	0.9999	0.0135–0.338	93.6	311.8
PHI	y = 70,000,000x − 178729	0.9999	0.030–0.754	44.7	149.1
GA	y = 2,000,000x − 7122.5	0.9997	0.019–0.470	494.1	2470
RHE	y = 60,000,000x − 21663	0.9999	0.002–0.054	18.4	92.20