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Method for resolving six triazole pesticide enantiomers and detecting and analyzing residues by ultra-performance convergence chromatography

A technology of ultra-high-efficiency convergence and analysis method, which is applied in the field of resolution and residue detection and analysis of 6 kinds of triazole pesticide enantiomers by ultra-high-efficiency convergence chromatography, achieving good reproducibility and high sensitivity

Pending Publication Date: 2019-11-22
ZHEJIANG ACAD OF SCI & TECH FOR INSPECTION & QUARANTINE
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AI Technical Summary

Problems solved by technology

Most triazole pesticides have chirality, which has a great impact on their biological activity
At present, there are few reports on the application of UPC2 technology to the separation of the enantiomers of triazole pesticides and the determination of the residues of the corresponding enantiomers

Method used

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  • Method for resolving six triazole pesticide enantiomers and detecting and analyzing residues by ultra-performance convergence chromatography
  • Method for resolving six triazole pesticide enantiomers and detecting and analyzing residues by ultra-performance convergence chromatography
  • Method for resolving six triazole pesticide enantiomers and detecting and analyzing residues by ultra-performance convergence chromatography

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Embodiment Construction

[0018] 1 part of this application

[0019] 1.1 Instruments, materials and reagents

[0020] Ultra-high performance convergence chromatograph (Waters, USA); desktop centrifuge (Thermo, USA); R215 rotary evaporator (Buchi, Switzerland); AE260 electronic balance (Mettler, Switzerland); MS2 vortex mixer (Shanghai Medical University Instrument Factory); ultrapure water purification system (Elga, UK); microporous filtration membrane (0.22 μm, organic phase); nitrogen blowing instrument (Tokyo Physical and Chemical Company, Japan).

[0021] n-Hexane (chromatographically pure, Scharlau Company, Spain); acetone, acetonitrile (chromatographically pure, Scharlau Company, Spain); anhydrous sodium sulfate: (analytical pure, 450°C burning, Shanghai Shisi Hewei Chemical Co., Ltd.); Flory Silica adsorbent (excellent pure, 100-200 mesh, Sinopharm Chemical Reagent Co., Ltd., ignited at 650°C for 24h, inactivated with 2% ultrapure water for later use); graphitized carbon black (GCB): (excellent...

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Abstract

The invention relates to a pesticide residue detection method, and particularly relates to a method for resolving six triazole pesticide enantiomers and detecting and analyzing residues by ultra-performance convergence chromatography (UPC2). The method for resolving six triazole pesticide enantiomers and detecting and analyzing residues by ultra-performance convergence chromatography comprises sample extraction, purification and chromatographic column analysis. The six triazole pesticides are triadimefon, triadimenol, hexaconazole, tebuconazole, bitertanol and myclobutanil. According to the method, a piece of Acquaty Trefoil AMY1 is adopted to resolve the six triazole pesticides on UPC2, the cosolvent of triadimefon, triadimenol, tebuconazole and bitertanol adopts methanol, and the cosolvent of hexaconazole and myclobutanil adopts a mixed solution of isopropanol and anhydrous ethanol with the volume ratio being 1:1. The method has the advantages of high efficiency, high sensitivity andgood reproducibility, and the recovery rate, the precision and the like of the method meet the requirements of residue detection.

Description

technical field [0001] The present application relates to a pesticide residue detection method, in particular to an ultra-high performance convergence chromatography method for the resolution of six triazole pesticide enantiomers and a residue detection and analysis method. Background technique [0002] Chirality is a ubiquitous phenomenon in nature. With the development of science, the demand for optically pure substances is increasing, and the separation of chiral enantiomers has attracted people's attention. Traditional chiral pesticide research does not distinguish between enantiomers, and treats all enantiomers as the same substance. GB 2763-2014 "Maximum Residue Limits of Pesticides in Food" only regulates the safety standards for the use of mixed racemates of pesticides , the residual limits of the potent and low-toxic enantiomer and the ineffective and highly toxic enantiomer of each pesticide are not precisely specified. However, different enantiomers of chiral pes...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 张文华谢文侯建波邹学权陈钦可李淑敏祝泽龙徐敦明
Owner ZHEJIANG ACAD OF SCI & TECH FOR INSPECTION & QUARANTINE
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