Table 2 Measurement values of kimchi cabbage reference materials by the developed ID-LC/MS/MS method
Imidacloprid | Chlothianidin | Thiamethoxam | |
|---|---|---|---|
Period 1 | |||
Average values (mg/kg, n = 10) | 0.860 | 0.524 | 0.787 |
Standard deviation (%) | 0.51 | 0.40 | 0.46 |
Expanded uncertainty (mg/kg) | 0.020 | 0.012 | 0.014 |
Period 2 | |||
Average values (mg/kg, n = 4) | 0.837 | 0.514 | 0.774 |
Standard deviation (%) | 0.31 | 0.27 | 0.37 |
Expanded uncertainty (mg/kg) | 0.034 | 0.015 | 0.023 |