Table 5.
Percentage recovery of pharmaceuticals.
| Compounds | Concentration level | |
|---|---|---|
| 10 ng/mL | 100 ng/L | |
| E1 | 146 | 101 |
| E3 | 88 | 92 |
| E2 | 70 | 113 |
| EE2 | 75 | 90 |
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