Table 4.
Recovery and precision of spectinomycin and lincomycin spiked in blank poultry eggs (whole egg, n = 6).
| Analyte | Matrix | Spike Level (μg/kg) |
Recovery (%) |
RSD (%) |
Intraday RSD (%) |
Interday RSD (%) |
|---|---|---|---|---|---|---|
| Spectinomycin | Hen whole egg | 6.0 | 82.9 ± 1.5 | 1.8 | 3.0 | 4.2 |
| 1000.0 | 84.5 ± 1.0 | 1.2 | 4.1 | 3.6 | ||
| 2000.0 a | 86.0 ± 1.5 | 1.7 | 4.0 | 4.1 | ||
| 4000.0 | 95.7 ± 1.2 | 1.3 | 3.7 | 5.5 | ||
| Duck whole egg | 6.3 | 80.9 ± 1.3 | 1.6 | 4.6 | 5.0 | |
| 1000.0 | 85.5 ± 1.5 | 1.8 | 3.6 | 4.5 | ||
| 2000.0 a | 86.1 ± 2.7 | 3.1 | 2.9 | 3.2 | ||
| 4000.0 | 89.4 ± 1.8 | 2.0 | 2.9 | 3.4 | ||
| Goose whole egg | 7.1 | 82.1 ± 1.7 | 2.1 | 3.2 | 5.0 | |
| 1000.0 | 86.8 ± 1.3 | 1.5 | 2.7 | 4.9 | ||
| 2000.0 a | 87.7 ± 1.7 | 1.9 | 2.5 | 3.0 | ||
| 4000.0 | 90.6 ± 1.5 | 1.7 | 4.0 | 4.1 | ||
| Pigeon whole egg | 8.0 | 82.3 ± 1.3 | 1.6 | 3.3 | 6.7 | |
| 1000.0 | 83.5 ± 1.1 | 1.3 | 3.1 | 4.6 | ||
| 2000.0 a | 87.7 ± 2.2 | 2.5 | 3.7 | 4.8 | ||
| 4000.0 | 88.7 ± 1.3 | 1.5 | 2.5 | 3.7 | ||
| Quail whole egg | 7.6 | 85.1 ± 1.4 | 1.6 | 3.1 | 6.0 | |
| 1000.0 | 85.3 ± 1.6 | 1.9 | 3.2 | 4.4 | ||
| 2000.0 a | 87.1 ± 1.9 | 2.2 | 3.0 | 3.9 | ||
| 4000.0 | 94.8 ± 1.1 | 1.2 | 2.5 | 3.5 | ||
| Lincomycin | Hen whole egg | 8.4 | 82.7 ± 1.3 | 1.6 | 4.6 | 5.7 |
| 25.0 | 85.4 ± 2.4 | 2.8 | 5.0 | 5.6 | ||
| 50.0 a | 84.8 ± 1.6 | 1.9 | 3.1 | 4.5 | ||
| 100.0 | 87.1 ± 1.9 | 2.2 | 3.2 | 4.9 | ||
| Duck whole egg | 6.5 | 81.8 ± 1.1 | 1.3 | 4.3 | 4.7 | |
| 25.0 | 86.7 ± 2.5 | 2.9 | 3.7 | 5.4 | ||
| 50.0 a | 85.4 ± 2.6 | 3.0 | 2.7 | 3.7 | ||
| 100.0 | 86.1 ± 2.7 | 3.1 | 4.6 | 5.0 | ||
| Goose whole egg | 8.5 | 80.1 ± 1.5 | 1.9 | 2.2 | 4.1 | |
| 25.0 | 84.0 ± 2.6 | 3.1 | 3.4 | 4.1 | ||
| 50.0 a | 87.9 ± 1.1 | 1.3 | 2.3 | 3.7 | ||
| 100.0 | 93.5 ± 1.8 | 1.9 | 3.5 | 3.9 | ||
| Pigeon whole egg | 9.5 | 81.4 ± 1.6 | 2.0 | 3.9 | 6.5 | |
| 25.0 | 82.2 ± 2.1 | 2.6 | 2.3 | 3.1 | ||
| 50.0 a | 86.2 ± 2.2 | 2.6 | 5.6 | 6.7 | ||
| 100.0 | 91.3 ± 1.6 | 1.8 | 3.0 | 3.9 | ||
| Quail whole egg | 8.2 | 80.0 ± 1.3 | 1.6 | 2.6 | 3.3 | |
| 25.0 | 86.7 ± 2.1 | 2.4 | 3.9 | 3.7 | ||
| 50.0 a | 86.4 ± 1.5 | 1.7 | 2.6 | 4.4 | ||
| 100.0 | 87.3 ± 1.1 | 1.3 | 3.5 | 5.5 |
Note: a Maximum residue limit (MRL). RSD, relative standard deviation.