Research Article
Potentiometric Determination of Ketotifen Fumarate in Pharmaceutical Preparations and Urine Using Carbon Paste and PVC Membrane Selective Electrodes
Table 3
Determination of ketotifen fumarate in pure solutions and pharmaceutical preparations using CPE and PVC sensors.
| | CPE | PVC | Taken (mg) | Direct method | Standard addition method | Direct method | Standard addition method | | Recovery % | RSD % | Recovery % | RSD % | Recovery % | RSD % | Recovery % | RSD % |
| Pure KTF | 4.255 | 98.93 | 0.74 | 98.54 | 1.77 | 98.50 | 0.80 | 99.02 | 2.25 | 12.77 | 97.97 | 0.97 | 97.89 | 1.54 | 98.07 | 1.46 | 98.56 | 1.35 | 21.28 | 98.96 | 1.14 | 99.02 | 0.99 | 99.18 | 1.42 | 97.86 | 1.87 | 29.79 | 97.83 | 1.73 | 99.42 | 0.83 | 98.79 | 1.36 | 98.22 | 1.76 | Zaditen tablet (1 mg/tablet) | 4.26 | 98.90 | 0.98 | 99.00 | 1.65 | 97.48 | 2.08 | 99.16 | 1.64 |
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