Table 2.

The regression equations of nine analytes.

Analytes	Linear Range µg·mL–1	Calibration Curve	R2	ANOVA p Value	LLOD µg·mL–1	LLOQ µg·mL–1
Coptisine	9.37–468.72	Y = 2225.6x − 5608.1	0.9998	0.0000	0.63	2.10
Epiberberine	6.75–337.50	Y = 2120.9x − 3536	0.9998	0.0000	0.81	2.16
Columbamine	3.56–142.22	Y = 2.3547x − 0.6865	0.9997	0.0000	0.81	2.71
Jatrorrhizine	5.96–298.04	Y = 3.3457x − 7.1431	0.9999	0.0000	0.62	1.85
Berberine	23.63–1181.70	Y = 3358x − 12774	0.9998	0.0000	0.53	1.60
Palmatine	7.88–394.08	Y = 3696.4x − 3244	0.9998	0.0000	0.31	0.92
Dehydroevodiamine	4.30–85.92	Y = 3.026x − 1.9044	0.9999	0.0000	0.43	1.29
Evodiamine	0.42–42.00	Y = 0.8719x − 0.1126	0.9998	0.0000	0.12	0.35
Rutaecarpine	0.21–21.12	Y = 5.5394x − 0.6834	0.9996	0.0000	0.06	0.17