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Detection method for rapidly screening various pesticides and biotoxins in aquatic products

A biotoxin and detection method technology, applied in the field of food chemical analysis, can solve the problems of low detection limit, unsatisfactory, complex fish matrix, etc., and achieve the effect of good precision and high sensitivity

Active Publication Date: 2021-02-19
张宪臣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complex matrix of fish meat, which contains various components such as fat and protein, conventional processing methods, the detection limit of the target compound in Q-Exactive cannot meet the requirements of the relevant national health standards and announcements due to the interference of the matrix.

Method used

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  • Detection method for rapidly screening various pesticides and biotoxins in aquatic products
  • Detection method for rapidly screening various pesticides and biotoxins in aquatic products
  • Detection method for rapidly screening various pesticides and biotoxins in aquatic products

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Embodiment

[0059] (1) Standard solution preparation:

[0060]Accurately weigh carbaryl (purity ≥ 98.9%), carbofuran (purity ≥ 98.3%), 3-hydroxy carbofuran (purity ≥ 98.0%), isoprocarb (purity ≥ 98.5%), methomyl (purity ≥99.1%), omethoate (purity ≥99.1%), trichlorfon (purity ≥99.0%), acetamiprid (purity ≥98.1%), chlorsulfuron (purity ≥98.5%), diniconazole (purity ≥99.0%), Kewensan (purity ≥99.0%), pyraclofen (purity ≥99.4%), imazalil (purity ≥99.0%), mefenazol (purity ≥98.7%), paclobutrazol (purity ≥ 99.0%), Phoxafos (purity ≥ 99.0%), phoxim (purity ≥ 98.0%), pirimicarb (purity ≥ 98.7%), tebuconazole (purity ≥ 98.5%), thiabendazole (purity ≥ 98.89%), thiacloprid (purity ≥98.5%), triadimefon (purity ≥95.0%), tricyclazole (purity ≥97.0%), carbendazim (purity ≥99.0%), pyrimethanil (purity ≥ 99.0%), pyrimidine (purity ≥ 99.0%), fenamiphos (purity ≥ 99.5%), fenamiphos sulfoxide (purity ≥ 98.5%), aniliphos sulfone (purity ≥ 99.0%), aldicarb (purity≥99.0%), aldicarb sulfone (purity≥99.2%), al...

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Abstract

The invention discloses a detection method for rapidly screening various pesticides and biotoxins in an aquatic product. The detection method comprises the following steps: (1) preparing a standard solution; (2) carrying out QuEChERS extraction and purification of a sample; (3) carrying out concentration; and (4) carrying out analyzing by an ultra-high performance liquid chromatography high-resolution mass spectrometer. QuEChERS is used for pretreating the aquatic product, meanwhile, ultrahigh performance liquid chromatography quadrupole / electrostatic field orbitrap mass spectrometry (UPLC-Q Exactive Orbitrap HRMS is combined to conduct high-throughput measurement on 93 kinds of pesticide and 16 kinds of biotoxin residues in the aquatic product, and the method is sensitive, rapid, simple,accurate, time-saving, stable, high in practicability and capable of meeting the detection requirements of the current market.

Description

technical field [0001] The invention relates to a detection method for rapidly screening various pesticides and biological toxins in aquatic product products, and belongs to the technical field of food chemical analysis. Background technique [0002] With the improvement of people's living standards, the proportion of aquatic products and their products in people's living standards is increasing day by day, and the safety of aquatic products has become the focus of attention of the whole society. Among the many factors affecting the quality and safety of aquatic products, pesticide and biotoxin residues are one of the main reasons. After pesticides are used in the production and processing of fruits, vegetables, grains and other crops, their residues may enter aquatic products through the food chain and the environment. products, thereby affecting human health. Biotoxins are a class of toxic chemical substances that are secreted, metabolized, and semi-biosynthetized by orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 张宪臣王勇杨威李勇
Owner 张宪臣
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