Research Article
Titrimetric and Spectrophotometric Methods for the Assay of Ketotifen Using Cerium(IV) and Two Reagents
Table 3
Results of intraday and interday accuracy and precision study.
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Method
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KTF taken mg/µg mL−1 | Intraday accuracy and precision () | Interday accuracy and precision () | KTF found mg/µg mL−1 | RE % | RSD % | KTF found mg/µg mL−1 | RE % | RSD % |
| A | 5.00 | 5.06 | 1.20 | 1.80 | 5.12 | 2.42 | 2.90 | 10.0 | 10.12 | 1.62 | 1.40 | 10.15 | 1.51 | 2.43 | 15.0 | 14.80 | 1.34 | 0.94 | 14.72 | 1.58 | 1.92 |
| B | 2.0 | 2.02 | 1.23 | 1.72 | 2.03 | 1.62 | 1.18 | 4.0 | 3.96 | 1.62 | 0.87 | 3.94 | 1.26 | 1.58 | 6.0 | 6.08 | 1.33 | 1.46 | 6.17 | 1.90 | 0.88 |
| C | 4.0 | 3.94 | 0.73 | 1.43 | 3.95 | 1.14 | 2.12 | 6.0 | 6.06 | 1.06 | 1.09 | 6.11 | 1.84 | 1.79 | 8.0 | 7.90 | 1.21 | 1.18 | 7.88 | 1.47 | 1.09 |
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In method A, KTF taken/found, is in mg and it is µg mL−1 in method B and C. RE: relative error (%); RSD: relative standard deviation (%).
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