Table 2 Extraction recovery results for ELX and RFX
| Analytes | Spiked conc.level (ng mL−1) | Area response (n = 6) | Extraction recovery (%) | CV (%) | |
|---|---|---|---|---|---|
| Extracted mean response | Post extracted mean response | ||||
| ELX | LQC (50.0) | 65,540 | 67,563 | 97.0 | 0.68 |
| MQC (100.0) | 130,424 | 142,522 | 91.5 | 0.16 | |
| HQC (150.0) | 195,784 | 208,552 | 93.8 | 0.31 | |
| RFX | LQC (100.0) | 120,553 | 122,549 | 98.3 | 0.17 |
| MQC (200.0) | 240,481 | 262,371 | 91.6 | 0.13 | |
| HQC (300.0) | 362,942 | 380,569 | 95.3 | 0.83 | |