Table 2 Method validation of pesticides in tomato using C18 clean-up method with HPLC analysis
Pesticides | Linearity (R2) | LOD (mg kg−1) | LOQ (mg kg−1) | Recovery (%) | Repeatability, %RSD | Within-laboratory reproducibility, %RSD | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.01 | 0.05 | 0.1 | 0.01 | 0.05 | 0.1 | 0.01 | 0.05 | 0.1 | ||||
mg kg−1 | mg kg−1 | mg kg−1 | ||||||||||
Nicosulfuron | 0.9970 | 0.003 | 0.008 | 88.6 | 93.5 | 98.5 | 3.7 | 7.0 | 7.0 | 5.8 | 5.5 | 7.9 |
Thifensulfuron-methyl | 0.9990 | 0.003 | 0.009 | 85.0 | 95.0 | 96.0 | 7.7 | 8.3 | 7.1 | 9.1 | 9.3 | 7.7 |
Flucetosulfuron | 0.9980 | 0.003 | 0.009 | 91.5 | 93.6 | 91.8 | 6.3 | 2.7 | 5.5 | 6.8 | 3.1 | 5.6 |
Imazoosulfuron | 0.9989 | 0.003 | 0.009 | 85.0 | 92.3 | 94.8 | 11.6 | 6.7 | 5.6 | 11.8 | 6.5 | 7.6 |
Propyrisulfuron | 0.9986 | 0.003 | 0.008 | 97.8 | 96.0 | 94.2 | 10.3 | 4.5 | 5.5 | 12.7 | 6.7 | 5.9 |
Metazosulfuron | 0.9985 | 0.003 | 0.009 | 82.2 | 81.5 | 82.1 | 10.7 | 8.6 | 7.1 | 13.0 | 13.3 | 8.4 |
Halosulfuron-methyl | 0.9985 | 0.003 | 0.008 | 96.3 | 93.5 | 97.5 | 9.3 | 7.6 | 8.7 | 10.3 | 7.3 | 9.9 |