Full
Outline
To establish a rapid detection method for the residue of the fungicide hexaconazole in food by dispersive liquid-liquid microextraction-high performance liquid chromatography.
A deep eutectic solvent synthesized from fenchyl alcohol, hexanoic acid and acetic acid at a molar ratio of 1:3:4 was used as the supporting solvent to prepare a ferrofluid with self-dispersibility and magnetic responsiveness by incorporating Fe3O4 nanoparticles. The prepared ferrofluid served as the extraction solvent for dispersive liquid–liquid microextraction, and hexaconazole was subsequently separated and quantified by high-performance liquid chromatography.
Under the optimal experimental conditions, the detection linear range of this method for hexaconazole was 0.02–2.00 μg/mL, the limit of detection was 0.006 μg/mL, and the relative standard deviation was less than or equal to 8.2%. The recovery rates of samples added to mineral water, tea and fruit juice were 83.9% to 95.6%.
This method is environmental friendly, easy to operate and highly sensitive. It can be effectively applied to the rapid detection of pesticide residues in food, providing a new and effective technical means for food safety testing.
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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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