Research Article
Exploiting of Green Synthesized Metal Oxide Nanoparticles in the Potentiometric Determination of Metformin Hydrochloride in Pharmaceutical Products
Table 5
Intraday and interday assays of MTF solution using MTF-PT-Al2O3NP-modified and MTF-PT-NiONP-modified sensors.
| | MTF-PT-Al2O3NP-modified sensor | MTF-PT-NiONP-modified sensor | Test sample | Found | % recovery | Test sample | Found | % recovery |
| Intraday | 10 | 10.00 | 100.00 | 10 | 9.99 | 99.90 | 8 | 7.96 | 99.50 | 8 | 7.95 | 99.38 | 6 | 5.99 | 99.93 | 6 | 5.98 | 99.67 |
| Mean ± SD | 99.81 ± 0.27 | 99.65 ± 0.26 |
| n | 3 | 3 |
| SE%∗∗ | 0.16 | 0.15 |
| RSD% | 0.27 | 0.26 |
| Interday | 10 | 9.99 | 99.90 | 10 | 9.95 | 99.50 | 8 | 7.94 | 99.25 | 8 | 7.94 | 99.25 | 6 | 6.00 | 100.00 | 6 | 5.98 | 99.67 |
| Mean ± SD | 99.72 ± 0.41 | 99.47 ± 0.21 |
| n | 3 | 3 |
| SE%∗∗ | 0.24 | 0.12 |
| RSD% | 0.41 | 0.21 |
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