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Method for detecting pesticide residues in vegetables and fruits

A technology for pesticide residues and fruits, applied in the field of detection of pesticide residues in vegetables and fruits, can solve the problems of time-consuming and laborious, low detection efficiency, and need for repeated processing, and achieves the effects of low cost, good purification effect and low cost.

Pending Publication Date: 2018-05-01
沈阳海关技术中心
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Problems solved by technology

[0006] In view of this, the present invention discloses a method for detecting pesticide residues in vegetables and fruits, to at least solve the problem that the previous detection methods can only detect one pesticide residue at a time, resulting in the need for repeated processing of the tested samples, separate detection, and time-consuming Laborious, low detection efficiency and other issues

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  • Method for detecting pesticide residues in vegetables and fruits
  • Method for detecting pesticide residues in vegetables and fruits
  • Method for detecting pesticide residues in vegetables and fruits

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specific Embodiment

[0093] The present invention will be further explained with specific examples below, but it is not intended to limit the protection scope of the present invention.

[0094] The following methods were used to measure 59 kinds of pesticide residues and screen suspicious peaks for six samples of celery, cabbage, tomato, citrus, grape, and apple respectively.

[0095] 1. Instruments and Reagents

[0096] Main instrument: ACQUITY TM Ultra-high performance liquid chromatography (Waters, USA); AB Sciex QTrap 5500 quadrupole-ion trap mass spectrometer (AB, USA); QuEChERS kit (Shandong Qingcheng Instrument Co., Ltd., China).

[0097] Main reagents: 59 kinds of standard products with a purity of ≥98.0%, which were purchased from standard product manufacturers and research institutions such as the Environmental Protection Research and Monitoring Institute of the Ministry of Agriculture (Tianjin) and the National Center for Standard Materials.

[0098] 2. Standard solution preparation: ...

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Abstract

The invention discloses a method for detecting pesticide residues in vegetables and fruits. The method adopts an improved QuEChERS kit method for carrying out sample pretreatment, and has the advantages of being simple and rapid, high in efficiency and labor-saving, good in reproducibility, less in reagent consumption, low in labor intensity, low in cost, environmentally-friendly, and the like; furthermore, a UPLC-MS / MS-Qtrap detection method is cooperatively used, so that the simultaneous screening and confirmatory analysis of the 59 pesticide residues can be realized, and the high throughput analysis and detection of the multiple pesticide residues can be further realized.

Description

technical field [0001] The invention discloses the technical field of pesticide residue detection, in particular to a method for detecting pesticide residues in vegetables and fruits. Background technique [0002] my country is a large agricultural country, and pesticide residues play a pivotal role in agricultural production. From the beginning of the use of pesticide residues in the middle of the last century to the present, about a thousand kinds of pesticide residues have been widely used in the control of agricultural diseases and insect pests. Although all countries are currently committed to research on high-efficiency and low-toxicity pesticide residues, the excessive use of pesticide residues is still very common. [0003] After the spraying of pesticide residues, some of them are absorbed by the leaves and roots of the plants on the surface of the crops and in the soil; some of them float in the atmosphere as extremely fine particles, causing air pollution, and fal...

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/027
Inventor 赵颖李晓东姜玲玲金雁徐宜宏刘瑜张彤吴渺渺
Owner 沈阳海关技术中心
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