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Objective A method based on performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed for the determination of salbutamol in aquatic products and their products. Methods The analyte was enzymatic hydrolyzed in ${\mathrm{{NH}}}_{4}\mathrm{{AC}}$ solution overnight at ${37}^{\circ }\mathrm{C}$ , and extracted by ethyl acetate-isopropanol $\left({1 :1,\mathrm{v}/\mathrm{v}}\right)$ . The extract was cleaned up by QuEChERS method. Quantification was achieved by HPLC-MS/MS with multiple reaction monitoring (MRM) using internal standard method. Results The limit of quantification of salbutamol was ${0.5\mu }\mathrm{g}/\mathrm{{kg}}$ . The average recoveries at three spiked levels of 0.5,1.0 and ${5.0\mu }\mathrm{g}/\mathrm{{kg}}$ ranged from 87.8% to 110.7% with the relative standard deviations of ${2.7}\%\sim {9.6}\%\left({\mathrm{n}=6}\right)$ . Conclusion The method has the advantages of simple pretreatment steps and its sensitivity, precision, and recoveries all meet the requirements of residue detection regulations, accurately solving the problem of lack of relevant technical support for monitoring salbutamol residues in aquatic products and their products.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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