Table 1.
Mean percent recovery (%R) ± 1 standard deviation values determined for spiked maize samples after application of different extraction methods. Each sample was analyzed in triplicate.
| Extraction Method | %R | ||
|---|---|---|---|
| 20 ng/mL (1000 μg/kg) |
50 ng/mL (2500 μg/kg) |
200 ng/mL (10,000 μg/kg) |
|
| H2O | 98.0 ± 4.0 | 97.0 ± 3.0 | 105 ± 4.0 |
| MeOH/H2O 80:20 | 55.0 ± 4.5 | 57.0 ± 5.0 | 53.5 ± 4.0 |
| MeOH/H2O 60:40 | 66.0 ± 3.0 | 64.0 ± 3.5 | 67.0 ± 4.0 |
| MeOH/H2O 40:60 | 81.0 ± 4.0 | 78.0 ± 5.0 | 82.0 ± 3.0 |
| MeOH/H2O 20:80 | 96.0 ± 2.0 | 94.0 ± 3.0 | 98.0 ± 3.0 |
| AcN/H2O 80:20 | 92.0 ± 4.0 | 93.0 ± 2.5 | 95.0 ± 3.0 |
| AcN/H2O 60:40 | 82.0 ± 3.0 | 85.0 ± 4.0 | 84.0 ± 3.5 |
| AcN/H2O 40:60 | 85.0 ± 4.0 | 87.0 ± 2.5 | 83.0 ± 4.0 |
| AcN/H2O 20:80 | 92.0 ± 2.0 | 89.0 ± 4.0 | 88.0 ± 3.0 |
| H2O/OKM1 | 97.0 ± 3.5 | 98.0 ± 4.0 | 102 ± 5.0 |
| H2O/AKM1 | 93.0 ± 3.0 | 96.0 ± 5.0 | 92.0 ± 3.0 |
| H2O/ΕΝΚ1 | 100 ± 4.0 | 92.0 ± 3.0 | 95.0 ± 4.0 |