Research Article
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 limitb | Recovery % | Precision RSD %a | Accuracy RE % | Confidence Limitb |
| Quinz | 4.0 | 99.50 | 0.48 | | | 100.25 | 0.70 | 0.25 | | 8.0 | 99.00 | 1.09 | | | 99.15 | 1.30 | | | 12 | 99.60 | 1.32 | | | 99.30 | 1.70 | | | 16 | 99.80 | 0.88 | | | 99.40 | 0.97 | | | ARS | 2.0 | 99.50 | 0.56 | | | 99.70 | 0.69 | | | 4.0 | 99.25 | 1.15 | | | 99.90 | 0.75 | | | 6.0 | 99.80 | 1.50 | | | 99.30 | 0.83 | | | 8.0 | 99.40 | 0.84 | |
7.952 ± 0.07 | 99.40 | 1.10 | | | Mo(V)-thiocyanate | 5.0 | 99.40 | 0.58 | | | 99.80 | 0.75 | | | 10 | 99.10 | 1.03 | | | 99.50 | 1.46 | | | 20 | 99.70 | 1.52 | | | 99.20 | 1.15 | | | 30 | 99.50 | 0.98 | | | 99.60 | 0.80 | | |
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Mean of six determinations. RSD %: percentage relative standard deviation; RE %: percentage relative error. Mean standard error.
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