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Method for determining triazine herbicide residues in aquatic products by ultra-high performance liquid chromatography-tandem mass spectrometry

An ultra-high performance liquid phase and tandem mass spectrometry technology, which is applied in the field of physical and chemical inspection of pesticide residues in aquatic products, can solve the problems of poor stability and accuracy, time-consuming, and cumbersome purification steps of gas chromatography-tandem mass spectrometry, and shorten the purification process. Time, improve accuracy and reliability, improve the effect of sensitivity and accuracy

Active Publication Date: 2020-10-30
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology

[0003] In the prior art, the technical methods mainly used in the detection of triazine herbicide residues in aquatic products are divided into two parts: sample pretreatment and instrumental analysis and determination, in which the sample pretreatment is mostly purified by solid-phase extraction cartridges, and the purification steps are cumbersome. And time-consuming; instrumental analysis and determination are mostly reported by gas chromatography-tandem mass spectrometry (GC-MS / MS), but the stability and accuracy of gas chromatography-tandem mass spectrometry are poor

Method used

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  • Method for determining triazine herbicide residues in aquatic products by ultra-high performance liquid chromatography-tandem mass spectrometry
  • Method for determining triazine herbicide residues in aquatic products by ultra-high performance liquid chromatography-tandem mass spectrometry
  • Method for determining triazine herbicide residues in aquatic products by ultra-high performance liquid chromatography-tandem mass spectrometry

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Experimental program
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Embodiment 1

[0037] 1. Prepare mixed standard solution:

[0038] Prepare 6 parts of mixed standard solutions with gradient concentrations with the initial mobile phase (the mobile phase used in the first stage of elution), each part of mixed standard solutions contains 11 kinds of triazine herbicides, and the 11 kinds of triazine herbicides are respectively For simazine, diquat, siclozine, atrazine, atrazine, cyclooxazine, terbuthylazine, permethazine, turbuzine, terbuzine, and promethazine, three each in each mixed standard solution The concentrations of the azine herbicides were the same, and the concentrations of the triazine herbicides in the 6 mixed standard solutions were 1.0 μg / L, 5.0 μg / L, 10 μg / L, 20 μg / L, 50 μg / L, and 100 μg / L, respectively. Add internal standard Atrazine-D to each mixed solution 5 , internal standard atrazine-D in each mixed standard solution 5 The concentration is 5μg / L;

[0039] 2. UPLC analysis and detection:

[0040] Each mixed standard solution is subje...

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Abstract

The invention discloses a method for determining triazine herbicide residues in aquatic products by ultra-high performance liquid chromatography-tandem mass spectrometry. The method comprises the following steps: 1, preparing a mixed standard solution; 2, UPLC analysis and detection; 3, HESI-MS / MS analysis and detection are carried out; 4, establishing a standard curve; 5, pretreatment of an aquatic product sample; and 6, detecting the sample to be detected. The method is simple, the residual quantity of the triazine herbicides in the aquatic products can be rapidly and accurately detected, the matrix interference is little, and the determination result is accurate.

Description

technical field [0001] The invention relates to the technical field of physical and chemical inspection of pesticide residues in aquatic products, in particular to a method for determining triazine herbicide residues in aquatic products by ultra-high performance liquid chromatography-tandem mass spectrometry. Background technique [0002] Triazine herbicides (Triazine herbicides) are a class of highly efficient and selective herbicides that act by inhibiting plant photosynthesis and have been used as early as the 1950s. These herbicides are widely used in the prevention and control of various weeds. They are used in large amounts, stable in nature and long in duration. People are paying more and more attention to the harm they cause to human health and the environment. According to reports, these compounds may cause human cancer and birth defects, and can interfere with the normal function of hormones. Many countries in the world have included them in the list of endocrine d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/14G01N30/86
CPCG01N30/14G01N30/8634G01N30/04G01N2030/045
Inventor 彭婕何力居小倩甘金华陈建武
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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