Research Article
Sensitive and Selective Spectrophotometric Determination of Gabapentin in Capsules Using Two Nitrophenols as Chromogenic Agents
Table 7
Results of recovery study by standard addition method.
| |
Capsules studied | Method A | Method B | | GBP in capsule, μg mL−1 | Pure GBP added, μg mL−1 | Total found, μg mL−1 | Pure GBP recovered*, Percent ± SD | GBP in capsule, μg mL−1 | Pure GBP added, μg mL−1 | Total found, μg mL−1 | Pure GBP recovered*, Percent ± SD |
| | Gabantin-100 | 4.91
4.91
4.91 | 2.50
5.00
7.50 | 7.36
9.95
12.36 | 98.00 ± 2.82
100.8 ± 1.96
99.33 ± 2.44 | 3.88
3.88
3.88 | 2.00
4.00
6.00 | 5.91
7.84
9.81 | 101.5 ± 1.74
99.01 ± 2.09
98.83 ± 2.62 |
| | Gabapin-300 | 5.95
5.95
5.95 | 3.00
6.00
9.00 | 9.00
11.84
15.17 | 101.7 ± 2.36
98.16 ± 2.28
102.4 ± 2.73 | 3.95
3.95
3.95 | 2.00
4.00
6.00 | 5.96
7.87
10.06 | 100.5 ± 2.41
98.02 ± 2.09
101.8 ± 2.18 |
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