Single Standard Substance for the Simultaneous Determination of Eleven Components in the Extract of Paeoniae Radix Alba (Root of Paeonia lactiflora Pall.)

Table 4

The recoveries of the eleven components.

Component	Original (μg)	Spiked (μg)	Found (μg)	Recovery (%)	Average recovery (%)	RSD (%)
Gallic acid	60.14	42.29	101.5	97.7	97.1	1.1
	58.34	42.29	100.1	98.7
	51.15	42.29	92.43	97.6
	53.03	42.29	93.75	96.3
	53.94	42.29	94.60	96.1
	31.25	42.29	72.02	96.4
Oxypaeoniflorin	103.6	108.5	211.0	99.0	101.8	2.7
	103.8	108.5	212.1	99.8
	82.36	108.5	195.9	104.6
	88.36	108.5	200.9	103.7
	88.18	108.5	201.6	104.5
	114.2	108.5	222.1	99.4
Catechin	32.29	56.74	91.44	104.3	105.5	1.9
	29.87	56.74	89.32	104.8
	31.65	56.74	91.04	104.7
	26.12	56.74	87.05	107.4
	36.56	56.74	95.31	103.5
	37.48	56.74	99.07	108.6
Albiflorin	459.5	409.0	853.7	96.4	98.5	2.7
	440.2	409.0	858.7	102.3
	367.3	409.0	758.7	95.7
	385.3	409.0	772.1	94.6
	308.5	409.0	723.7	101.5
	365.0	409.0	776.5	100.6
Paeoniflorin	7775	6141	13979	101.0	98.3	1.5
	7997	6141	13934	96.7
	6275	6141	12336	98.7
	6750	6141	12742	97.6
	6720	6141	12741	98.1
	6860	6141	12855	97.6
Ethyl gallate	190.8	107.3	295.9	97.9	98.3	2.6
	186.0	107.3	296.7	103.2
	162.2	107.3	268.1	98.7
	159.2	107.3	262.3	96.0
	166.5	107.3	270.2	96.6
	216.8	107.3	321.5	97.5
Galloylpaeoniflorin	167.1	136.0	306.8	102.8	104.6	0.9
	161.9	136.0	304.1	104.6
	133.0	136.0	275.8	105.0
	141.6	136.0	283.5	105.0
	137.6	136.0	280.4	105.5
	70.24	136.0	213.7	102.9
Pentagalloylglucose	646.4	343.5	989.2	99.8	98.5	1.6
	643.5	343.5	977.8	97.3
	525.3	343.5	873.0	101.2
	583.6	343.5	919.4	97.8
	571.1	343.5	905.4	97.3
	570.9	343.5	906.3	97.6
Benzoic acid	223.5	236.9	465.8	102.3	102.8	1.2
	226.2	236.9	475.1	105.1
	199.7	236.9	442.8	102.6
	218.3	236.9	461.5	102.7
	202.0	236.9	445.5	102.8
	125.6	236.9	365.4	101.2
Benzoylpaeoniflorin	326.5	240.4	558.8	96.6	96.1	0.9
	333.1	240.4	561.7	95.1
	272.8	240.4	505.7	96.9
	302.2	240.4	533.2	96.1
	273.6	240.4	502.0	95.0
	297.9	240.4	531.0	97.0
Paeonol	15.12	36.08	50.75	98.7	99.6	1.6
	13.40	36.08	49.08	98.9
	14.50	36.08	51.52	102.6
	14.52	36.08	50.67	100.2
	17.93	36.08	53.49	98.6
	25.16	36.08	60.84	98.9