Table 12 Recovery studies of Vitamin C
Level (%) | Conc. (µg/mL) | Conc. before spiking (µg/mL) | Conc. of std added (µg/mL) | Conc. after spiking (µg/mL) | % Recovery | Mean | ± SD | %RSD |
|---|---|---|---|---|---|---|---|---|
80 | 5 | 5.02 | 4 | 9.08 | 101.5 | 100.5 | 1.08 | 1.07 |
5 | 5.08 | 4 | 9.04 | 99 | ||||
5 | 5.03 | 4 | 9.07 | 101 | ||||
100 | 5 | 4.98 | 5 | 10.07 | 101.8 | 100.33 | 1.08 | 1.08 |
5 | 5.06 | 5 | 10.02 | 99.2 | ||||
5 | 5.05 | 5 | 10.05 | 100 | ||||
120 | 5 | 5.08 | 6 | 11.08 | 100 | 99.72 | 0.90 | 0.90 |
5 | 5.09 | 6 | 11.00 | 98.5 | ||||
5 | 5.01 | 6 | 11.05 | 100.66 |