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SERS determination of CBZ in tea.
| Tea | Average (mg/kg, n = 5) | Added (mg/kg) | Measured (mg/kg) | Recovery (%) | RSD (%) | HPLC (mg/kg) |
|---|---|---|---|---|---|---|
| 1 | 0.250 | 0.500 | 0.760 | 102 | 5.9 | 0.218 |
| 2 | 0.198 | 0.500 | 0.720 | 104 | 8.4 | 0.220 |
| 3 | 0.156 | 0.500 | 0.700 | 109 | 5.4 | 0.160 |
| 4 | 1.06 | 0.500 | 1.52 | 92.0 | 7.0 | 0.980 |
| 5 | 0.470 | 0.500 | 0.934 | 92.8 | 5.9 | 0.464 |
