Table 4.

Precision data for the determination of LEV and AMB by the proposed method

Parameters		LEV concentration (μg/mL)			AMB concentration (μg/mL)
		15.0	20.0	32.5	3.6	4.8	6.0
Intraday	% Found	98.15	99.48	102.89	97.67	98.97	102.23
		97.00	98.82	100.93	102.99	102.06	101.01
		99.94	97.06	99.29	98.33	99.23	98.00
	$\left(\overline{\mathrm{X}}\right)$	98.36	98.45	101.04	98.45	100.09	101.04
	± SD	1.48	1.25	1.80	1.25	1.71	1.80
	% RSD	1.51	1.27	1.78	1.27	1.71	1.78
	% Error	0.87	0.73	1.03	0.73	0.99	1.03
Interday	% Found	98.55	99.95	101.09	100.19	100.31	101.69
		98.92	99.03	99.20	99.22	102.03	100.51
		100.18	100.80	100.89	98.82	99.90	99.88
	$\left(\overline{\mathrm{X}}\right)$	99.22	99.93	100.39	99.41	100.75	100.69
	± SD	0.86	0.89	1.04	0.70	1.13	0.92
	% RSD	0.86	0.89	1.04	0.71	1.12	0.91
	% Error	0.50	0.51	0.60	0.41	0.65	0.53