Research Article
Automated Online Solid-Phase Extraction Coupled with Sequential Injection-HPLC-EC System for the Determination of Sulfonamides in Shrimp
Table 4
Determination of SAs levels in shrimp samples by the traditional HPLC-MS method and the developed online SPE-HPLC-EC method.
| Spiked level (μg g−1) | Analytes | Online SPE-HPLC-EC method (conc. ± SD*, μg g−1) | HPLC-MS (conc. ± SD*, μg g−1) |
| | SMZ | 1.76 ± 0.11 | 1.77 ± 0.10 | | SMM | 2.01 ± 0.13 | 1.82 ± 0.11 | 2 | SMX | 2.13 ± 0.11 | 2.04 ± 0.11 | | SDM | 2.04 ± 0.06 | 1.70 ± 0.09 | | SQ | 2.11 ± 0.03 | 1.49 ± 0.09 |
| | SMZ | 3.45 ± 0.11 | 4.39 ± 0.14 | | SMM | 3.41 ± 0.15 | 4.44 ± 0.14 | 4 | SMX | 3.76 ± 0.08 | 4.57 ± 0.16 | | SDM | 3.72 ± 0.16 | 4.34 ± 0.14 | | SQ | 3.65 ± 0.05 | 4.34 ± 0.14 |
| | SMZ | 5.85 ± 0.13 | 6.56 ± 0.18 | | SMM | 6.28 ± 0.21 | 6.30 ± 0.18 | 6 | SMX | 5.74 ± 0.12 | 6.61 ± 0.18 | | SDM | 6.06 ± 0.34 | 6.02 ± 0.17 | | SQ | 6.15 ± 0.07 | 5.79 ± 0.15 |
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*SD: standard deviation ().
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