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A gc-orbitrap-ms screening analysis method for pesticide residues in food of animal origin

A technology of animal origin and pesticide residues, applied in the direction of analysis of materials, material separation, instruments, etc., can solve the problems of animal-derived food matrix complexity, large consumption of organic solvents, cumbersome steps, etc., to achieve strong applicability and use of organic reagents The effect of small amount and simple operation

Active Publication Date: 2021-09-21
INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The matrix of animal-derived food is complex, and traditional pretreatment methods often have cumbersome steps, take a long time and consume a large amount of organic solvents

Method used

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  • A gc-orbitrap-ms screening analysis method for pesticide residues in food of animal origin
  • A gc-orbitrap-ms screening analysis method for pesticide residues in food of animal origin
  • A gc-orbitrap-ms screening analysis method for pesticide residues in food of animal origin

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Experimental program
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Effect test

Embodiment 1

[0049] 1. Instrument working conditions:

[0050] Chromatographic conditions:

[0051]The chromatographic conditions of the gas chromatography are as follows: the heating program is: initial temperature 40°C, keep 1.5min; 25°C / min heat up to 90°C, keep 1.5min; 25°C / min heat up to 180°C; 5°C / min heat up to 280°C; 10°C / min to 300°C and keep for 3min. The inlet temperature was 290 °C, and the helium flow rate was 1.2 mL / min.

[0052] Mass Spectrometry Conditions:

[0053] The mass spectrometry conditions of the Orbitrap-MS method with an EI ion source are as follows: the ion source temperature is 280 °C, the ionization energy is 70 eV, and the current is 50 μA. The ion scan mode is full scan mode (Fullscan mode), the scan range is 50-550m / z, and the resolution is set to 60,000FWHM (200m / z).

[0054] The internal standard reference solution was used to calibrate the mass accuracy of the instrument in real time, and the mass spectrometry detection data was collected and process...

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Abstract

The invention discloses a GC-Orbitrap-MS screening analysis method for pesticide residues in animal-derived food. The method includes the following steps: (1) extraction: homogenize the animal-derived food sample, mix it with an extraction solvent and extraction salt, extract by shaking to obtain an extract, and take the supernatant I; (2) purification: combine the (1) The obtained supernatant Ⅰ is mixed with a purifying agent for purification, the supernatant Ⅱ is collected, and the sample liquid is obtained by filtration; (3) Chromatographic mass spectrometry detection: the pesticide residues in the sample liquid to be tested are separated by gas chromatography , and then detected by Orbitrap‑MS with an EI ion source, the pesticide residue content in food of animal origin can be obtained. The method of the present invention has the characteristics of high recovery rate, good precision, strong applicability, and less amount of organic reagents, and all technical indicators can meet the requirements of daily detection and analysis of many types of animal-derived foods, providing important data for the field of food safety. technical support.

Description

technical field [0001] The invention relates to a GC-Orbitrap-MS screening analysis method for pesticide residues in animal-derived food, belonging to the field of agricultural product quality and safety detection. Background technique [0002] Pesticides are indispensable auxiliary products in agricultural production. However, pesticides and their degradation products will accumulate in animals through the food chain, and then cause harm to human health. There are many types of pesticides, and their chemical properties vary greatly. Gas chromatography-orbitrap high-resolution mass spectrometry (GC-Orbitrap-MS) can provide accurate molecular mass and mass spectral fragmentation information of the compound to be tested, and has the advantages of high sensitivity, high accuracy and high resolution, and is increasingly used It is widely used in the analysis of pesticide residues in food. [0003] The matrix of animal-derived food is complex, and the traditional pretreatment m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/72
CPCG01N30/02G01N30/72
Inventor 翁瑞庞旭邱静喻长远苏昕
Owner INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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