Table 3 Extraction performance of the two Mag-CNTs/d-µSPE methods and the SPE methods
Mag-CNTs-COOH/d-µSPE (multi-stepped)a | Mag-CNTs-COOH/d-µSPE (one-step) | Mag-CNTs-SO3H/d-µSPE | SPE | ||||
|---|---|---|---|---|---|---|---|
Performance | Synthetic urine | Bovine blood | Synthetic urine | Bovine blood | Synthetic urine | Bovine blood | Bovine blood |
LOD (ng/mL) | 15 | 25 | 5 | 10 | 5 | 10 | 1 |
LOQ (ng/mL) | 30 | 30 | 10 | 60 | 10 | 60 | 25 |
Level of Calibrators | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
Regression Model | Non-weighted linear | Non-weighted linear | Non-weighted linear | Non-weighted linear | Quadratic | Quadratic | Non-weighted linear |
R2 value | 0.9985 | 0.9919 | 0.9982 | 0.9983 | 0.9982 | 0.9982 | 0.9980 |
Linear range | 30–1000 | 30–1000 | 10–1000 | 60–1000 | 10–1000 | 60–1000 | 25–1000 |