Research Article
Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
Table 2
The linear ranges, correlation coefficients, LODs, and LOQs of the method.
| | Pesticides | Linear range/(ng mL−1) | Regression
equation | Correlation coefficient | LOD/(ng mL−1) | LOQ/(ng mL−1) |
| | Bifenthrin | 1–50 | Y = (2 × 106 ± 5 × 104)x + (4 × 106 ± 2 × 105) | 0.9978 | 0.12 | 0.36
| | Fenpropathrin | 1–50 | Y = (9 × 105 ± 5 × 104)x + (2 × 106 ± 2 × 105) | 0.9997 | 0.30 | 0.90 | | Permethrin | 1–50 | Y = (8 × 105 ± 6 × 104)x + (1 × 106 ± 1 × 105) | 0.9999 | 0.33 | 0.99 | | Cyfluthrin | 1–50 | Y = (4 × 106 ± 2 × 105)x − (4 × 106 ± 3 × 105) | 0.9999 | 0.24 | 0.72 | | Cypermethrin | 5–50 | Y = (4 × 105 ± 4 × 104)x + (9 × 105 ± 1 × 105) | 0.9991 | 0.60 | 1.80 | | Fenvalerate | 5–50 | Y = (6 × 104 ± 4 × 103)x + (1 × 105 ± 1 × 104) | 0.9997 | 0.99 | 2.97 | | Deltamethrin | 5–50 | Y = (9 × 104 ± 6 × 103)x + (1 × 105 ± 1 × 104) | 0.9948 | 1.65 | 4.95 |
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