Table 1.
Validation results for determination of thujone in sage products
| Repeatability conditions without sample preparation (n = 3) | Repeatability conditions including sample preparation of different packages (n = 9) | Recovery [%] | |||||
|---|---|---|---|---|---|---|---|
| Sample | Mean (mg/L) |
SD (mg/L) |
RSD [%] |
Mean (mg/L) |
SD (mg/L) |
RSD [%] |
|
| Tea 1 | 11.43 | 0.03 | 0.2 | 11.43 | 0.49 | 4.3 | 97.4 |
| Tea 2 | 12.78 | 0.06 | 0.5 | 12.78 | 0.68 | 5.3 | 104.0 |
| Tea 3 | 14.66 | 0.08 | 0.5 | 14.66 | 0.65 | 4.4 | 92.8 |
| Tea 4 | 4.27 | 0.03 | 0.7 | 4.27 | 0.54 | 12.6 | 101.4 |
| Tea 5 | 16.12 | 0.05 | 0.3 | 16.12 | 1.63 | 10.1 | 93.7 |
| Tea 6 | * | * | * | 7.00 | 0.06 | 0.8 | * |
| Tea 7 | * | * | * | 18.00 | 0.78 | 4.3 | 102.5 |
| Tea 8 | * | * | * | 17.42 | 0.39 | 2.2 | 102.0 |
* not analyzed in this sample