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Extraction efficiencies for chlorhexidine using PLE and MSPD with different eluents (N = 3) and matrix effects for two different injection volumes. Addition level: 2 µg g−1
| PLE recovery | MSPD recovery | Matrix effects | |||||
|---|---|---|---|---|---|---|---|
| MeOH | MeOH-FA (1%) | MeOH | ACN | MeOH-FA (1%) | Inj vol. 2 µL | Inj vol. 0.5 µL | |
| Chlorhexidine | 25 ± 5% | 73 ± 9% | 26 ± 4% | 9 ± 2% | 92.5 ± 7.5% | 152 ± 4% | 115 ± 3% |
