Table 2.

Linearity, limits of detection (LOD), and limits of quantitation (LOQ) of nine compounds by HPLC-UV/ELSD method

Compound	Calibration curvea	R 2	Linear range (μg/ml)	LOQb (μg/ml)	LODc (μg/ml)
3. Chlorogenic acid	y=84.6944x−20.3658	0.9999	0.644–103	0.129	0.0516
4. Gentiopicroside	y=36.4927x+2.5304	0.9999	0.919–147	0.149	0.0596
6. Isochlorogenic acid B	y=89.5979x−47.1398	0.9999	0.625–100	0.186	0.0744
8. Diosmetin-7-O-β-D-glucopyranoside	y=57.9145x−2.3414	0.9998	0.323–51.6	0.190	0.0760
11. Apigenin	y=124.4984x−27.0302	0.9998	0.212–34.0	0.130	0.0520
12. Diosmetin	y=120.2592x−17.9481	0.9999	0.223–35.7	0.115	0.0460
15. Tauroursodeoxycholic acid	Y=1.5284X+3.0893	1.0000	39.5–158	20.0	7.98
16. Acacetin	y=138.2031x−25.7620	0.9999	0.238–38.0	0.180	0.0720
18. Taurochenodeoxycholic acid	Y=1.4636X+3.1675	0.9996	50.5–202	24.8	9.90

^a y and x stand for peak area and concentration (μg/ml), respectively; Y=lg y, X=lg x

^bS/N=3

^cS/N=10