Utility of Charge Transfer and Ion-Pair Complexation for Spectrophotometric Determination of Eletriptan Hydrobromide in Pure and Dosage Forms

Table 3

Evaluation of intraday and interday precision and accuracy obtained by the proposed methods.

Methods	Added; (μg mL^−1)	Intra-day				Inter-day
		Recovery; %	Precision; RSD %^a	Accuracy; RE %	Confidence; limit^b	Recovery; %	Precision; RSD %^a	Accuracy; RE %	Confidence Limit^b
Quinz	4.0	99.50	0.48	−0.50	19.88±0.089	100.25	0.70	0.25	4.01±0.029
	8.0	99.00	1.09	−1.00	59.52±0.44	99.15	1.30	−0.85	7.932±0.108
	12	99.60	1.32	−0.40	99.70±0.56	99.30	1.70	−0.70	11.916±0.213
	16	99.80	0.88	−0.20	120.6±1.06	99.40	0.97	−0.60	15.904±0.162
ARS	2.0	99.50	0.56	−0.50	1.99±0.012	99.70	0.69	−0.30	1.994±0.014
	4.0	99.25	1.15	−0.75	3.97±0.048	99.90	0.75	−0.10	3.996±0.031
	6.0	99.80	1.50	−0.20	5.988±0.094	99.30	0.83	−0.70	5.958±0.052
	8.0	99.40	0.84	−0.60	7.952 ± 0.07	99.40	1.10	−0.60	7.952±0.092
Mo(V)-thiocyanate	5.0	99.40	0.58	−0.60	4.97±0.03	99.80	0.75	−0.20	4.99±0.039
	10	99.10	1.03	−0.90	9.91±0.107	99.50	1.46	−0.50	9.95±0.152
	20	99.70	1.52	−0.30	19.94±0.318	99.20	1.15	−0.80	19.84±0.239
	30	99.50	0.98	−0.50	29.85±0.307	99.60	0.80	−0.40	29.88±0.251

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