Table 3 Stability of bergapten (n = 6)
Concentration (ng mL−1) | Freeze thaw cycles | Autosampler for 24 h | −20 °C for 1 month | |||
|---|---|---|---|---|---|---|
Accuracy (%) | RSD (%) | Accuracy (%) | RSD (%) | Accuracy (%) | RSD (%) | |
2 | 89.5 | 11.9 | 107 | 8.69 | 97.6 | 7.33 |
6 | 101 | 13.1 | 110 | 7.49 | 96.9 | 7.71 |
500 | 113 | 5.65 | 102 | 4.31 | 90.5 | 5.99 |
5000 | 92 | 10.9 | 91.7 | 4.85 | 99.4 | 9.31 |