Fig. 1
Fig. 2
Results of determination of salicylic acid in feeds
| Type of feed | Concentration (mg/kg) |
|---|---|
| Wheat (n=3) | 0.05–0.08 |
| Barley (n=3) | <LOQ |
| Triticale (n=3) | <LOQ |
| Ground paprika (n=3) | 0.58–1.87 |
| Young corn (n=3) | 5.30–12.8 |
| Fully grown corn (n=3) | 0.13–1.01 |
| Compound feed (n=50) | <LOQ–0.48 |
Results of method validation for corn and compound feeds
| Validation parameter | Material | ||||
|---|---|---|---|---|---|
| Corn | Compound feed | ||||
| Linearity (R2) | 0.9936 | 0.9911 | |||
| Limit of detection, LOD (mg/kg) | 0.05 | 0.02 | |||
| Limit of quantification, LOQ (mg/kg) | 0.1 | 0.05 | |||
| Concentration (mg/kg) | 0.25 | 0.5 1.0 | 0.25 | 0.5 | 1.0 |
| Repeatability, CV (%) | 8.74 | 7.21 6.93 | 7.28 | 11.3 | 8.06 |
| Reproducibility, CV (%) | 9.63 | 11.8 7.46 | 8.15 | 14.7 | 9.35 |
| Recovery (%) | 101 | 98.3 97.8 | 105 | 100 | 95.3 |