Table 2. Validation parameters of the developed method.
Parameter | Pods | Leaves | Criteriab) |
---|---|---|---|
Linearity (r2) | 0.999 | 0.997 | ND |
Repeatability (RSD %) | 3.75 | 5.43 | ≤ 20% |
LOD (µg/kg) | 0.83 | 2.7 | ND |
LOQ (µg/kg) | 2.5 | 8.2 | ≤ MRL |
Accuracya) (%) | 109.38 | 108.5 | 70–120% |
r2 determination coefficient; LOD limit of detection was calculated as 3 : 1 S/N ratio; LOQ limit of quantification was calculated as 10 : 1 S/N ratio from calibration measurements. a) Accuracy was calculated as the average recovery from all spike levels. b) European Commission requirements (SANCO Document 12571, 2013), unless not determined ND.