Qualitative and Quantitative Analysis of Volatile Components of Zhengtian Pills Using Gas Chromatography Mass Spectrometry and Ultra-High Performance Liquid Chromatography

Table 4

Determination of the contents of protocatechuic acid, ferulic acid, and ligustilide of 13 batches of ZTPs.

Sample number	Content (μg/g)
	⁢Protocatechuic acid		⁢Ferulic acid		⁢Ligustilide
	Mean	RSD (%)	Mean	RSD (%)	Mean	RSD (%)
1209051H	14.01	1.91	80.11	2.78	174.13	1.65
1303002H	14.43	1.26	79.59	1.42	79.59	2.52
1303002H	17.30	1.39	80.37	1.84	178.85	2.65
1210019H	8.36	0.82	78.06	2.02	363.42	0.39
1212024H	10.64	2.75	82.51	1.21	348.78	2.48
1301023H	12.21	1.25	86.42	0.88	252.37	2.57
1302026H	10.08	1.67	115.90	2.62	323.11	2.47
1303036H	6.07	2.51	84.98	3.00	388.69	1.05
1304001H	10.02	1.61	111.97	2.35	268.61	2.42
1306019H	9.62	1.61	86.68	1.32	303.62	0.81
1306020H	8.13	1.26	80.93	2.89	355.71	1.72
1306027H	9.71	0.37	93.14	0.49	260.75	0.52
1309014H	9.64	2.86	96.50	2.89	301.90	0.59