Table 4.

Recovery of six BAs.

	Extraction Samples						QC Samples
Compounds	Original Amounts (g)	Spiked Amounts (mg)	Detected Amounts (mg)	Recovery (%)	Mean Recovery (%)	RSD (%)	QC Levels	Mean Recovery (%)	RSD (%)
KBA	0.04918	0.750	1.521	102.60	98.44	4.78	L	104.75	1.93
	0.04726	0.750	1.423	93.45
	0.05012	0.750	1.556	105.36			M	101.63	2.21
	0.05035	0.750	1.498	97.15
	0.04509	0.750	1.395	94.14			H	104.38	1.05
	0.04728	0.750	1.457	97.94
AKBA	0.04918	1.235	2.511	105.76	101.01	4.26	L	97.67	3.76
	0.04726	1.235	1.376	98.63
	0.05012	1.235	2.492	102.35			M	103.40	4.09
	0.05035	1.235	2.390	93.64
	0.04509	1.235	2.385	103.67			H	96.71	1.98
	0.04728	1.235	2.418	102.00
α-BA	0.04918	0.920	1.807	97.95	99.12	1.73	L	101.24	2.64
	0.04726	0.920	1.772	97.99
	0.05012	0.920	1.841	99.76			M	91.68	3.01
	0.05035	0.920	1.820	97.02
	0.04509	0.920	1.762	101.24			H	105.11	2.47
	0.04728	0.920	1.798	100.77
β-BA	0.04918	2.40	4.729	99.44	97.97	3.13	L	102.90	4.48
	0.04726	2.40	4.598	97.79
	0.05012	2.40	4.869	103.41			M	99.53	1.55
	0.05035	2.40	4.704	96.08
	0.04509	2.40	4.436	95.35			H	106.39	2.20
	0.04728	2.40	4.550	102.60
α-ABA	0.04918	0.318	0.607	92.54	97.88	4.86	L	102.35	3.14
	0.04726	0.318	0.635	105.18
	0.05012	0.318	0.641	101.35			M	98.17	1.58
	0.05035	0.318	0.621	94.60
	0.04509	0.318	0.589	95.05			H	101.04	4.22
	0.04728	0.318	0.614	98.54
β-ABA	0.04918	2.10	4.080	95.62	96.71	3.72	L	103.82	3.23
	0.04726	2.10	3.891	90.47
	0.05012	2.10	4.135	96.35			M	106.44	1.79
	0.05035	2.10	4.202	99.08
	0.04509	2.10	3.956	97.92			H	100.01	2.80
	0.04728	2.10	4.11	100.86

L: LQC levels, M: MQC levels, H: HQC levels.