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 |