Table 2.

Intraday and interday precision of the proposed methods.

Method	Conc. (ng/mL)	Recovery (%) ± SDa	Intraday precision		Interday precision
			Mean ± SDa	%RSD	Mean ± SDa	%RSD
	20	99.86 ± 1.17	100.63 ± 1.13	1.18	99.10 ± 1.50	1.51
Micelle-enhanced spectrofluorometric	125	96.49 ± 0.40	99.82 ± 0.82	0.82	99.63 ± 1.85	1.86
	500	99.76 ± 1.66	100.34 ± 1.09	1.08	100.23 ± 1.43	1.42
	250	99.24 ± 2.25	99.31 ± 0.58	0.58	98.36 ± 1.89	1.90
Hantzsch reaction	500	100.71 ± 1.98	100.56 ± 0.70	0.70	100.71 ± 1.44	1.43
	1000	99.35 ± 1.44	99.86 ± 0.44	0.44	99.57 ± 0.82	0.82

^aMean of six determinations.