Table 1.
Accuracy and method precision expressed as percent recovery and percent relative standard deviation for GEM and BET
| Accuracy (n = 3) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Concentration [µg/mL] | Mean area | Mean amount recovered (µg) | % Recovery | Standard deviation | % Relative standard deviation | |||||
| GEM | BET | GEM | BET | GEM | BET | GEM | BET | GEM | BET | |
| 5 | 78,657 | 29,787 | 2.57 | 2.52 | 101.74 | 99.86 | 0.02 | 0.01 | 0.86 | 0.48 |
| 10.0 | 151,613 | 55,563 | 4.95 | 4.71 | 99.09 | 99.02 | 0.03 | 0.06 | 0.64 | 1.39 |
| 15 | 304,537 | 118,318 | 9.95 | 10.02 | 99.29 | 99.98 | 0.05 | 0.01 | 0.48 | 0.06 |
| Method precision | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Sample | Concentration [µg/ml] | Weight taken (mg) | Area | Mean amount recovered (mg) | % Recovery | ||||
| GEM | BET | GEM | BET | GEM | BET | GEM | BET | ||
| 1 | 5 | 5.13 | 4.86 | 1,57,886 | 55,749 | 5.16 | 4.76 | 100.58 | 97.16 |
| 2 | 5 | 4.99 | 5.03 | 1,52,524 | 57,917 | 4.98 | 4.95 | 99.89 | 97.52 |
| 3 | 5 | 5.01 | 4.93 | 1,52,983 | 56,897 | 5.00 | 4.86 | 99.79 | 97.75 |
| 4 | 5 | 4.92 | 4.9 | 1,51,705 | 55,900 | 4.96 | 4.78 | 100.77 | 96.62 |
| 5 | 5 | 5 | 4.98 | 1,53,514 | 56,645 | 5.02 | 4.84 | 100.34 | 96.34 |
| 6 | 5 | 4.9 | 4.85 | 1,50,773 | 55,464 | 4.93 | 4.74 | 100.55 | 96.86 |
| Average | 5 | 5 | 5 | 1,53,231 | 56,429 | 5 | 5 | 100 | 97 |
| Standard deviation | 2477.13 | 911.40 | 0.08 | 0.08 | 0.40 | 0.54 | |||
| % Relative standard deviation | 1.6 | 1.6 | 1.6 | 1.6 | 0.4 | 0.6 | |||