Table 4.

Recoveries and matrix effects of TSG, EDG, and emodin.

Compound	Compound concentration(ng/mL)	Recovery (%)	Precision (RSD%)	Matrix effects (%)	Precision (RSD%)
TSG	5	92.80 ± 12.14	13.37	89.77 ± 4.36	4.85
	50	84.33 ± 8.12	9.63	94.01 ± 3.45	3.67
	500	76.98 ± 4.77	6.20	94.20 ± 4.35	4.62
EDG	5	107.85 ± 9.29	8.61	92.84 ± 4.38	4.74
	50	72.86 ± 7.90	10.84	91.01 ± 3.28	3.60
	500	67.36 ± 6.17	9.16	89.68 ± 3.64	4.06
Emodin	5	81.26 ± 5.45	6.71	101.79 ± 8.48	8.33
	50	78.21 ± 9.17	11.73	98.08 ± 6.08	6.20
	500	76.17 ± 7.86	10.32	102.17 ± 8.52	8.34

The data are represented as the as the mean ± SD, n = 6.