Full
Outline
To establish a method for the simultaneous determination of prometryn and fenpropathrin residue in Apostichopus japonicus by solid-phase extraction-gas chromatography-mass spectrometry (SPE-GC/MS).
The samples were extracted with acetonitrile. The extracts were purified using a Cleanert Florisil solid-phase extraction column and then reconstituted in n-hexane. Matrix-matched standard solutions were prepared, and detection was performed in selected ion monitoring mode. The effects of different extraction solvents, solvent volumes, solid-phase extraction columns and elution ratios on extraction efficiency were compared.
At spiked levels of 5–20 μg/kg, the recoveries of prometryn ranged from 86.3% to 106.0%, with relative standard deviations of 5.4%–11.6%, and the limit of quantitation was 5 μg/kg. For fenpropathrin at spiked levels of 7–20 μg/kg, the recoveries ranged from 95.9%–113.6%, with relative standard deviations of 4.1%–10.8%, and the limit of quantitation was 7 μg/kg.
This method is simple, efficient and accurate, making it suitable for both qualitative and quantitative determination of prometryn and fenpropathrin residues in Apostichopus japonicus.
9
2
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
