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| Analyte | 0.1 μg L−1 | 1.0 μg L−1 | 10.0 μg L−1 | |||
|---|---|---|---|---|---|---|
| Average recovery (%) | RSD (%) | Average recovery (%) | RSD (%) | Average recovery (%) | RSD (%) | |
| Diazepam | 114.6 | 11.83 | 96.6 | 4.13 | 103.6 | 3.13 |
| Chlorpromazine | 111.6 | 10.04 | 93.1 | 5.28 | 101.8 | 1.44 |
| Clozapine | 113.5 | 6.14 | 98.6 | 3.43 | 98.5 | 2.71 |
| Triazolam | 119.9 | 6.64 | 97.8 | 3.30 | 100.7 | 4.54 |
| Alprazolam | 114.0 | 5.59 | 96.8 | 3.57 | 100.1 | 2.67 |
| Estazolam | 89.3 | 11.96 | 98.3 | 3.63 | 98.3 | 4.14 |
