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Determined recoveries of DBP spiked samples (1, 50 and 100 ng/mL) using surrogate analyte method. Recovery (RE), Standard deviation (SD), Coefficient of variation (CV%).
| Concentration | Replication | RE% (Mean) | SD | CV% |
|---|---|---|---|---|
| 1 ng/mL | 9 | 88.2 | 9.1 | 10.3 |
| 50 ng/ mL | 9 | 93.7 | 6.5 | 6.9 |
| 100 ng/mL | 9 | 95.6 | 6.8 | 7.1 |
