Preparation method and application of diamide insecticide molecular imprinted polymer

A molecular imprinting and pesticide technology, which is applied in the field of preparation of diamide pesticide molecularly imprinted polymers, can solve problems such as difficulty in meeting requirements, and achieve the effects of low preparation cost, strong operability and simple preparation process

Active Publication Date: 2011-06-15
湖南化研院检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to meet the requirements for the trace analysis of pesticide residues by general methods, whether it is gas chromatography, liquid chromatography detection, gas spectrometry or liquid mass spectrometry.
This poses new challenges to the extraction, purification, separation and detection of trace residues of such pesticides in environmental samples

Method used

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  • Preparation method and application of diamide insecticide molecular imprinted polymer
  • Preparation method and application of diamide insecticide molecular imprinted polymer
  • Preparation method and application of diamide insecticide molecular imprinted polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Preparation of Flubendiamide Molecularly Imprinted Polymer MIP1

[0021] Weigh 0.0451g template molecule flubendiamide, 0.5026g reaction monomer methacrylic acid (MAA), 4.9041g crosslinking agent ethylene glycol dimethacrylate (EGDMA), 0.09209g initiator azobisisonitrile, 10mL Porogen chloroform, mixed evenly, put into a 20mL ampoule, deoxygenated by nitrogen for 10 minutes, and sealed. React the airtight ampoule in an oven at 70°C for 48 hours (or react for 12 to 36 hours under the irradiation of a 125W or 150W high-pressure mercury lamp) to obtain a block-shaped molecularly imprinted polymer of flubendiamide. The single polymer is taken out, ground and pulverized, dried and passed through a 100-200 mesh sieve to obtain flabendil molecularly imprinted polymer particles. Use methanol-acetic acid mixed solution (9:1, V / V) to repeatedly ultrasonically clean the template molecules in the prepared polymer particles until no template molecules can be detected at ...

Embodiment 2～13

[0022] Examples 2-13: Preparation of flubendiamide molecularly imprinted polymers MIP2-MIP13 in a similar manner to Example 1

[0023]

[0024] implement

Embodiment 14

[0025] Example 14: Preparation of chlorantraniliprole molecularly imprinted polymer MIP14

[0026] Weigh 0.0401g template molecule chlorantraniliprole, 0.4538g reaction monomer methacrylic acid (MAA), 4.1154g crosslinking agent ethylene glycol dimethacrylate (EGDMA), 0.0901g initiator azobisisonitrile, 10mL Porogen chloroform, mixed evenly, put into a 20mL ampoule, deoxygenated by nitrogen for 10 minutes, and sealed. React the airtight ampoule in an oven at 70°C for 48 hours (or react for 12-36 hours under the irradiation of a 125W or 150W high-pressure mercury lamp) to obtain a block-shaped molecularly imprinted polymer of chlorantraniliprole. The single polymer is taken out, ground and pulverized, dried and passed through a 100-200 mesh sieve to obtain chlorantraniliprole molecularly imprinted polymer particles. Use methanol-acetic acid mixed solution (9:1, V / V) to repeatedly ultrasonically clean the template molecules in the prepared polymer particles until no template mol...

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Abstract

The invention discloses a preparation method and application of a diamide insecticide molecular imprinted polymer with special recognition performance on the diamide insecticide. The method comprises the following steps: mixing one or more of diamide insecticide template molecules and one or more of polymerization reaction monomer, crosslinking agent, pore former and initiator, then performing a thermal initiation polymerization reaction or photopolymerization reaction to prepare the polymer of diamide insecticide, grinding the obtained polymer, screening, firstly cleaning with organic solvent, then washing with a mixed solution of organic solvent and organic acid to obtain the template molecules without diamide insecticide; and finally cleaning the molecular imprinted polymer of the template molecules without diamide insecticide with organic solvent to neutral, and drying in vacuum to obtain the diamide insecticide molecular imprinted polymer. The invention can be used to screen, enrich, separate and purify the diamide insecticide in environmental and biological samples and can also be used for the pretreatment and fast detection of the residual diamide insecticide in various environmental samples.

Description

technical field [0001] The invention relates to a preparation method and application of a diamide insecticide molecularly imprinted polymer (molecular imprinting polymer, MIP for short) which has specific recognition performance for diamide insecticides. Background technique [0002] Diamide insecticides are a new type of pesticides with high efficiency, low toxicity and unique mechanism of action. They mainly act on ryanodine receptors, induce the activation of insect ryanodine receptors, and release endogenous calcium ion pools. This in turn leads to the death of insects. Outstanding representative varieties of this kind of insecticides include flubendiamide, chlorantraniliprole and cyantraniliprole, and the chemical structural formula is as follows: [0003] [0004] This type of insecticide has special effects on Lepidoptera pests, showing quick effect and long lasting effect, has high activity on larvae and adults, has stomach poisoning and contact killing effects, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/06C08F20/14C08F20/34C08F26/06C08F20/56C08F20/58C08F12/22C08F26/08C08F2/44C08J9/26C08J9/14B01J20/285B01D15/08G01N30/02
Inventor 欧晓明唐德秀冯国录裴晖付启明余淑英
Owner 湖南化研院检测技术有限公司
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