PDF
Full
Outline
To establish a rapid method for the determination of 33 organophosphorus pesticide residues in four different fruit and vegetable substrates (common type, high pigment type, high fat type, and high sugar type) by QuEChERs pretreatment combined with gas chromatography-tandem mass spectrometry (GC-MS), so as to provide technical support for simultaneous detection and food safety risk assessment of organophosphorus pesticides in different fruits and vegetables.
The samples were extracted with acetonitrile and sodium citrate-disodium hydrogen citrate buffer at the same time, purified with ethylenediamine-N-propyl silane (PSA), octadecylsilane bonded silica gel (C18), and graphitized carbon black (GCB). After nitrogen blowing concentration, the samples were re-dissolved with acetone and detected by gas chromatography-tandem mass spectrometry under multi-reaction ion monitoring (MRM) mode. Quantifications were based on internal standard curves.
The method had good linear relationship in the range of 50 μg/L to 500 μg/L, with the correlation coefficients greater than 0.9950. The detection limits were within 1.50 to 5.04 μg/kg, and the limits of quantification were within 5.01 to 16.78 μg/kg. In the range of 0.040 to 0.200 mg/kg, the average recoveries ranged from 71.4% to 119.1%, with the relative standard deviations less than 12%.
The method is simple and rapid, with high accuracy and precision, which is suitable for the rapid detection and quantitative analysis of 33 organophosphorus pesticide residues in different fruit and vegetable substrates.
PDF
58
29
| 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
010-62199257
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
