Research Article
Use of Charge Transfer Complexation Reactions for the Spectrophotometric Determination of Sumatriptan in Pharmaceuticals
Table 3
Evaluation of intraday and interday precision and accuracy.
| Method | SMT taken (g mL−1) | Intra-day () | Inter-day () | SMT founda (g mL−1) | %RSDb | %REc | SMT founda (g mL−1) | %RSDb | %REc |
| DDQ method | 16.0 | 16.4 | 0.90 | 2.27 | 16.4 | 1.20 | 2.63 | 32.0 | 32.4 | 0.93 | 1.29 | 32.5 | 1.25 | 1.63 | 48.0 | 47.6 | 1.79 | 0.83 | 47.4 | 1.93 | 1.16 | I2 method | 8.00 | 7.91 | 1.71 | 1.09 | 7.90 | 1.91 | 1.22 | 16.0 | 16.3 | 0.82 | 1.98 | 16.3 | 1.06 | 2.16 | 24.0 | 24.2 | 1.72 | 0.93 | 24.3 | 2.01 | 1.07 |
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aMean value of five determinations; brelative standard deviation (%); crelative error (%).
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