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A method for measuring the migration of polycyclic aromatic hydrocarbons in soymilk machines

A technology of polycyclic aromatic hydrocarbons and determination methods, which is applied in the detection field, can solve problems such as human hazards, and achieve the effect of ensuring product quality and safety

Inactive Publication Date: 2020-07-24
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soymilk machine bearings, motors and other parts need to use lubricating oil, there is a rubber ring between the machine head and the rotating blade, some soymilk machines use plastic machine heads and cups, and some unscrupulous merchants use inferior and damaged wires, etc. Toxic chemical substances such as aromatic hydrocarbons (PAHs) remain, and these substances may migrate into soymilk during the high-speed and high-temperature operation of the soymilk machine, posing potential hazards to the human body

Method used

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  • A method for measuring the migration of polycyclic aromatic hydrocarbons in soymilk machines
  • A method for measuring the migration of polycyclic aromatic hydrocarbons in soymilk machines
  • A method for measuring the migration of polycyclic aromatic hydrocarbons in soymilk machines

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Embodiment Construction

[0024] 1. Instruments and reagents

[0025] Gas chromatography tandem mass spectrometer: TRACE 1310 / TSQ800 Evo (Thermo Fisher Scientific, USA); C18 solid-phase extraction column (6mL, 0.5g, Waters, USA); large-volume loading tube (60mL, Tianjin Bona Aegel Corporation) ).

[0026] Mixed standard solution of 18 kinds of PAHs (1000mg / L, American o2si smart solutions company), containing naphthalene (Nap), acenaphthylene (Acy), acenaphthylene (Ace), fluorene (Flu), phenanthrene (Phe), anthracene (Ant) , fluoranthene (Fla), pyrene (Pyr), benzo[a]anthracene (BaA), chrysene (CHR), benzo[b]fluoranthene (BbF), benzo[j]fluoranthene (BjF), benzene a[k]fluoranthene (BkF), benzo[e]pyrene (BeP), benzo[a]pyrene (BaP), indeno[1,2,3-cd]pyrene (IcdP), dibenzo[ a, h] anthracene (DahA), benzo[g, h, i] perylene (BghiP); n-hexane, dichloromethane, acetone, methanol (chromatographically pure, Sigma, USA); absolute ethanol (analytical pure); The experimental water was ultrapure water prepared by M...

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Abstract

The invention discloses a method for measuring a migration amount of polyaromatic hydrocarbon in a soybean milk machine. The method comprises the following steps: migrating food simulation fluid undernormal operation of the soybean milk machine for 60 min, carrying out solid-phase extraction on an object to be measured in the migrated solution by using a solid phase extraction column, performinggas chromatography-tandem mass spectrum detection, and performing quantification through an external standard method. Limit of Quantifications (LOQ) for different substances are between 1 and 5 ng / L,so that the method is high in sensitivity; relevant coefficients of all substances within a linear range of 1 to 500 ng / L are larger than 0.9980. The average recycling rate of low, medium and high levels is 76.1 to 121.0 percent, and a Relevant Standard Deviation (RSD) is between 2.9 and 13.5 percent. The polyaromatic hydrocarbon can be detected to different extents in 8 soybean machine actual samples, and the migration amount is 3.1 to 23.1 ng / L.

Description

technical field [0001] The invention relates to a detection method, in particular to a method for measuring the migration of polycyclic aromatic hydrocarbons in a soybean milk maker. Background technique [0002] As a common food processing appliance, the safety of soybean milk machines is closely related to the health of consumers. Soymilk machine bearings, motors and other parts need to use lubricating oil, there is a rubber ring between the machine head and the rotating blade, some soymilk machines use plastic machine heads and cups, and some unscrupulous merchants use inferior and damaged wires, etc. Toxic chemicals such as aromatic hydrocarbons (PAHs) remain, and these substances may migrate into soybean milk during the high-speed and high-temperature operation of the soybean milk machine, posing potential hazards to the human body. For example, in 2011, it was revealed that industrial lubricating oil was used in parts of soybean milk machines instead of food grade, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 王志娟吕庆李海玉张庆白桦
Owner CHINESE ACAD OF INSPECTION & QUARANTINE