Table 4 Percent recovery of PXD extracted with the modified QuEChERS method
Sample | Spiking level/(μg/g) or (μg/mL) | Recovery (%) | Average recovery (%) | RSD (%) | ||
|---|---|---|---|---|---|---|
1 | 2 | 3 | ||||
Soil | 1.0 | 73.0 | 76.0 | 82.0 | 77.0 | 4.6 |
5.0 | 92.6 | 97.4 | 93.5 | 94.5 | 10.6 | |
10.0 | 100.3 | 99.3 | 99.8 | 99.8 | 1.9 | |
Water | 1.0 | 83.0 | 86.0 | 82.0 | 83.6 | 2.1 |
5.0 | 82.6 | 87.4 | 88.5 | 86.2 | 3.1 | |
10.0 | 97.3 | 96.4 | 99.8 | 97.8 | 1.8 | |
Wheat grains | 3.0 | 79.0 | 81.5 | 82.7 | 81.1 | 1.9 |
15.0 | 77.6 | 79.4 | 78.2 | 78.4 | 0.91 | |
30.0 | 87.2 | 86.4 | 89.3 | 87.6 | 1.5 | |