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Rapid screening method for exogenous hazards in white spirit

A technology for hazardous substances and liquor, applied in the field of analysis and detection, can solve problems such as complex matrix, damage to chromatographic columns and mass spectrometers, and analysis of interfering target substances, and achieve the effects of high analysis throughput, rich analysis types, and strong specificity

Inactive Publication Date: 2019-06-07
ANHUI RUISIWEIER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the matrix of the liquor sample is complex and contains more than 2,000 trace components, which will not only interfere with the analysis of the target (pesticide compound), but also cause fatal damage to the chromatographic column and mass spectrometer. Therefore, how to effectively extract the target substance and purify and remove the Interfering impurities have become a problem that needs to be solved urgently

Method used

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  • Rapid screening method for exogenous hazards in white spirit
  • Rapid screening method for exogenous hazards in white spirit
  • Rapid screening method for exogenous hazards in white spirit

Examples

Experimental program
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Effect test

Embodiment

[0035] 1.1 Reagents and medicines

[0036] Pesticide residues, mycotoxins, sweeteners, biogenic amines, bisphenol S standard substances, single-standard stock solutions, prepared from 10% acetonitrile water, and stored at -20°C in the dark.

[0037] 1.2 Instruments and equipment

[0038] Waters ACQUITY I-Class system G2-XS QTof mass spectrometer is equipped with electrospray ion source (ESI); Swiss Buchi R-210 vacuum rotary evaporator; American LABCONCO 4.5L vacuum freeze dryer; CNW Poly-Sery HLB solid phase extraction column; American Organomation N -EVAP-112 Nitrogen Blowing Apparatus.

[0039] 1.3 Sample pretreatment

[0040]Take 500mL of white wine in an evaporating bottle, evaporate at 40°C, rotate at 120r / min, evaporate and concentrate to 200mL, and take out. Put it in an evaporating dish and concentrate it into a solid in a vacuum freeze dryer, add 5mL ultrapure water to redissolve, take another 5mL to wash the dish wall three times, and combine 10mL of the conce...

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Abstract

The invention discloses a rapid screening method for exogenous hazards in white spirit. The method comprises the following steps of firstly, carrying out vacuum concentration to remove ethanol in thewhite spirit, carrying out freeze drying to reduce the volume, purifying and concentrating through an HLB solid-phase extraction column, carrying out UPLC-Q-Tof detection, carrying out matching by utilizing the accurate mass number of a characteristic ion peak of an unknown target compound, sub-ion fragment information, isotope matching, a retention time and a white spirit exogenous hazard database, and screening the suspicious exogenous hazards. Compared with the prior art, the method has high specificity of screening analysis of the white spirit, simplicity in operation, rapidness and accuracy, high analysis flux and capability of simultaneously analyzing pesticide residue, fungal toxins, sweetening agents, biogenic amine and bisphenol substances, and provides a scientific method for simultaneously and rapidly analyzing the quality control and exogenous hazards of the white spirit.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a rapid screening method for exogenous harmful substances in liquor. Background technique [0002] Pesticides are an extremely important part of modern agricultural production, and are crucial for eliminating insect pests and increasing agricultural output. Due to the need to spray herbicides, insecticides, fungicides, auxins and other drugs during the grain planting process, and the soil and water sources may also be polluted by pesticides, resulting in pesticide residues in the grain. Although fermentation can degrade some pesticides, organic substances such as ethanol in liquor have good solubility for specific pesticides, resulting in pesticide residues in the wine, threatening the health and life safety of consumers. Mycotoxins are some toxic secondary metabolites produced by various fungi during the growth process, which are extremely toxic and have carcinog...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/08
Inventor 马金同李安军刘国英王银辉沈小梅胡心行丁峰周庆伍
Owner ANHUI RUISIWEIER TECH
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