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Cowpea N-methyl xylene carbamate adsorbing material, preparation and application

A technology of xylyl methyl carbamate and adsorption materials, which is applied in the preparation of test samples, alkali metal oxides/hydroxides, inorganic chemistry, etc., and can solve problems such as long penetration time, complicated operation, and expensive equipment , to achieve the effects of wide linear range, avoiding secondary pollution, and easy operation

Inactive Publication Date: 2019-02-19
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of long penetration time, expensive equipment, complicated operation and low permeability in the existing N-methylcarbamate penetration method, the purpose of the present invention is to provide a cowpea N-methylcarbamate xylene Ester adsorption material, preparation and application, the material can capture N-methylxylyl carbamate

Method used

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  • Cowpea N-methyl xylene carbamate adsorbing material, preparation and application
  • Cowpea N-methyl xylene carbamate adsorbing material, preparation and application
  • Cowpea N-methyl xylene carbamate adsorbing material, preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 66 parts of Na with a mass fraction of 15% 2 HPO 4 It is 42% TEDA-PAM-Gel to mix evenly with 24 parts of mass fractions, obtains the gel mixture, then adds 10 parts of mass fractions and is ionic liquid [EPy]Br of 22%, the above-mentioned mixture is placed in the autoclave, in React at 150°C for two hours, then store it in a vacuum oven at 40°C and let it stand for 48 hours to prepare the morning glory-like ionic liquid active adsorption material.

[0029] Take out this adsorption material, be used to capture the N-methyl dimethyl carbamate in cowpea, cowpea: water: the mass ratio of adsorption material=4:8:1, leave standstill 20min under 26 ℃, capture the N-methylcarbamate in cowpea Xylyl methyl carbamate, then take out the cowpea and wash it with water. The permeability of the target before and after capture is recorded in Table 1.

Embodiment 2

[0031] The preparation method of this example is the same as that of Example 1, the only difference is that the type of ionic liquid in the preparation process is different. In this example, the ionic liquid is changed to [2-aemim][PF6](1-aminoethyl-3- Methylimidazole hexafluorophosphate), and the rest of the conditions were unchanged, and the permeability of the target before and after capture was recorded in Table 1.

Embodiment 3

[0033] The preparation method of this example is the same as that of Example 1, the only difference is that the type of ionic liquid in the preparation process is different. In this example, the ionic liquid is changed to [bmim][PF6](1-butyl-3-methylimidazole hexafluorophosphate), and the rest of the conditions were unchanged, and the permeability of the target before and after capture was recorded in Table 1.

[0034] As can be seen from the foregoing examples and Table 1, the composition of the ionic liquid in the adsorbent is changed, and the permeability for separating N-methylxylylcarbamate in cowpea is respectively 99.5%, 85.6%, and 78.2%. Therefore, when [EPy]Br is used as the ionic liquid, the permeability of N-methylxylylcarbamate in cowpea is the largest, and the penetration effect is the best.

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Abstract

The invention discloses a cowpea N-methyl xylene carbamate adsorbing material, preparation and application. Ionic liquid [EPy]Br, Na2HPO4 and TEDA-PAM-Gel are mixed and react by the aid of a sol-gel method to prepare the morning-glory-shaped ionic liquid activated adsorbing material. Reaction temperature ranges from 150 DEG C to 170 DEG C, and the mass ratio of the ionic liquid [EPy]Br, the Na2HPO4 to the TEDA-PAM-Gel is 1:6:3. The adsorbing material is rapidly and conveniently prepared by the aid of the special ionic liquid, salt and grafted chelate gel, and the prepared morning-glory-shapedionic liquid activated adsorbing material has high targeting ability and collection efficiency, the recovery rate of cowpea N-methyl xylene carbamate can reach 99.5%, and the method has a wide linearrange, low detection limit and small relative standard deviation and can meet the national requirement of cowpea N-methyl xylene carbamate detection.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a cowpea N-methylxylyl carbamate adsorption material, its preparation and application. Background technique [0002] N-Methylcarbamate xylyl is a moderately toxic insecticide with a strong contact effect and a fast knockdown speed, but the residual effect is only 2-3 days, and its efficacy is not affected by temperature, and it can still Good emulation. It has special effects on pests such as Diptera, Lepidoptera and Homoptera, has special effects on rice planthoppers and leafhoppers, and has special effects on thrips, rice bract insects, cotton aphids, cotton bollworms, cotton small bridge builders, bean aphids, Soybean borer, soybean wheat moth, armyworm, small corn borer, underground pests, cutworms, grubs, tea tree, and fruit tree pests all have good control effects. Due to its outstanding control effect on pests, it is widely used in crops. Due to the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/26B01J20/28G01N1/34
CPCB01J20/048B01J20/22B01J20/264B01J20/28016G01N1/34
Inventor 李宇亮伍琪马天培朱棋徐帅
Owner CHANGAN UNIV
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