Table 2.

Intraday and interday precision and accuracy data for GMF obtained by the proposed methods.

Method	Added (μg mL−1)	Intraday				Interday
		Recovery %	Precision RSD %a	Accuracy RE %	Confidence limitb	Recovery %	Precision RSD %a	Accuracy RE %	Confidence limitb
BCG	5.0	99.30	0.53	−0.80	4.996 ± 0.026	100.60	0.43	0.60	5.03 ± 0.022
	10	99.50	0.65	−0.50	9.950 ± 0.065	99.30	0.59	−0.70	9.930 ± 0.059
	15	99.10	0.82	−0.90	14.865 ± 0.122	99.90	0.83	−0.10	14.985 ± 0.124
BCP	4.0	100.60	0.47	0.60	4.024 ± 0.019	99.30	0.51	−0.70	3.988 ± 0.02
	8.0	99.20	0.72	−0.80	7.936 ± 0.057	99.70	0.70	−0.30	7.976 ± 0.056
	12	100.20	1.17	0.20	12.024 ± 0.141	100.30	1.10	0.30	12.036 ± 0.132
BPB	5.0	100.10	0.49	0.10	5.005 ± 0.025	99.60	0.62	−0.40	4.98 ± 0.031
	10	99.80	0.79	−0.20	9.98 ± 0.079	99.40	0.87	−0.60	9.94 ± 0.086
	15	99.70	1.01	−0.30	14.955 ± 0.151	100.20	1.24	0.20	15.03 ± 0.23
BTB	5.0	99.60	0.65	−0.40	4.98 ± 0.032	99.70	0.54	−0.30	4.985 ± 0.027
	10	100.10	0.88	0.10	10.01 ± 0.088	99.30	0.75	−0.70	9.93 ± 0.074
	15	100.40	0.93	0.40	15.06 ± 0.140	100.20	1.08	0.20	15.03 ± 0.162
MO	10	99.60	0.44	−0.40	9.96 ± 0.044	99.50	0.52	−0.50	9.95 ± 0.052
	20	99.80	0.68	−0.20	19.96 ± 0.136	99.70	0.83	−0.30	19.94 ± 0.166
	30	100.30	0.98	0.30	30.09 ± 0.295	100.20	1.20	0.20	30.06 ± 0.361

^aMean of six determinations; RSD %: percentage relative standard deviation; RE %: percentage relative error.

^bConfidence limit at 95% confidence level and five degrees of freedom (t = 2.571).