Research Article
Automated Online Solid-Phase Extraction Coupled with Sequential Injection-HPLC-EC System for the Determination of Sulfonamides in Shrimp
Table 3
Intra- and Interday precision and recoveries of the proposed method.
| Analyte | | Intraday | | Interday | | Spiked level (μg g−1) | Mean of recovery (%) ± SD* | RSD (%) | Mean of recovery (%) ± SD* | RSD (%) |
| | 2 | 87.8 ± 5.5 | 6.2 | 84.6 ± 8.7 | 10.3 | SMZ | 4 | 86.3 ± 2.7 | 3.1 | 96.5 ± 9.9 | 10.3 | | 6 | 97.6 ± 2.2 | 2.3 | 99.8 ± 2.3 | 2.3 |
| | 2 | 100.3 ± 6.5 | 6.5 | 94.5 ± 5.2 | 5.5 | SMM | 4 | 85.2 ± 3.7 | 4.3 | 92.5 ± 6.4 | 6.9 | | 6 | 104.6 ± 3.4 | 3.2 | 102.8 ± 1.5 | 1.4 |
| | 2 | 106.5 ± 5.3 | 4.9 | 103.5 ± 5.6 | 5.4 | SMX | 4 | 94.0 ± 1.9 | 2.0 | 95.0 ± 1.3 | 1.3 | | 6 | 95.6 ± 1.9 | 2.0 | 100.9 ± 4.9 | 4.9 |
| | 2 | 102.1 ± 3.0 | 3.0 | 101.2 ± 9.7 | 9.6 | SDM | 4 | 93.0 ± 3.9 | 4.2 | 90.6 ± 2.8 | 3.1 | | 6 | 101.0 ± 5.6 | 5.5 | 103.1 ± 1.8 | 1.8 |
| | 2 | 105.6 ± 1.3 | 1.2 | 96.9 ± 12.6 | 13.0 | SQ | 4 | 91.2 ± 1.2 | 1.3 | 96.2 ± 5.6 | 5.8 | | 6 | 102.5 ± 1.1 | 1.0 | 100.9 ± 1.3 | 1.3 |
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*SD: standard deviation ().
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