Rice cyhalothrin adsorption material and preparation method and application thereof

A technology of cyhalothrin and an adsorption material, which is applied in the field of green separation and environmental protection, can solve the problems of long penetration time, expensive equipment, complicated operation, etc., and achieves the effects of wide linear range, easy operation, and avoidance of secondary pollution.

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

[0005] Aiming at the disadvantages of long penetration time, expensive equipment, complicated operation and low penetration rate in the existing cyhalothrin penetration method, the purpose of the present invention is to provide a rice cyhalothrin adsorption material, preparation method and Its application is used to separate and extract cyhalothrin, which can capture cyhalothrin

Method used

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  • Rice cyhalothrin adsorption material and preparation method and application thereof
  • Rice cyhalothrin adsorption material and preparation method and application thereof
  • Rice cyhalothrin adsorption material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 17 parts of ionic liquid [Bmin]Br with mass fraction of 35% and 53 parts of K with mass fraction of 18% 2 HPO 4 Mix evenly to obtain a two-phase aqueous extraction system, then add 30 parts of DETA-PAM-Gel with a mass fraction of 45% to obtain a gel-like mixture, and burn the above-mentioned gel-like mixture under nitrogen protection for two hours. The burning temperature is 120°C. Form powdery particles, and then store them in a vacuum drying oven at 40° C. for 48 hours to prepare coral-shaped ionic liquid active adsorption materials.

[0032] The specific process of using the adsorption material of the present invention to capture cyhalothrin in rice is that the mass ratio of rice to adsorption material is 6:1, the adsorption material is sprinkled on rice ears, the adsorption temperature is 27°C, and the adsorption time is 25 minutes.

[0033] What is specifically caught is the rice ear of rice.

[0034] The permeability of the target before and after capture is rec...

Embodiment 2

[0036] The preparation method of this embodiment is the same as that of Example 1, the only difference being that the type of ionic liquid in the preparation process is different. In this embodiment, the ionic liquid is changed to ([TBA]Cl) (tetrabutylammonium chloride), and the remaining conditions The permeability of the target before and after capture is recorded in Table 1.

Embodiment 3

[0038] The preparation method of this example is the same as that of Example 1, the difference is only that the type of ionic liquid in the preparation process is different, and in this example, the ionic liquid is changed to [Emim][PF6](1-ethyl-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.

[0039] As can be seen from the above examples and Table 1, the composition of the ionic liquid in the adsorbent is changed, and the permeability for separating cyhalothrin in rice is 99.6%, 74.3%, and 59.3%, so [Bmin] When Br was used as ionic liquid, the permeability of cyhalothrin in rice was the largest and the penetration effect was the best.

[0040] Depend on figure 1 , 2 And 3, it can be seen that when the ionic liquid in the adsorption material is [Bmin]Br, a coral-like structure can be formed, and changing the type of ionic liquid will change the structu...

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Abstract

The invention discloses a rice cyhalothrin adsorption material and a preparation method and application thereof. The method includes: mixing 1-methyl-3-buthylimidazole bromide, dipotassium phosphate and polyacrylamide-diethylenetriamine grafted chelated gel, and burning at a temperature of 120-150 DEG C to obtain the adsorption material, wherein a mass ratio of 1-methyl-3-buthylimidazole bromide to dipotassium phosphate to polyacrylamide-diethylenetriamine grafted chelated gel is 1:8:1. The preparation method of the adsorption material is quick and convenient; by adoption of the special ionicliquid, salt and grafted chelated gel in preparation, the prepared coral-shaped ionic liquid activated adsorption material is high in targeting performance and collection efficiency. By adoption of the method, the adsorption rate of cyhalothrin in rice reaches 99.5%, wide linear range, low detection limit and low relative standard deviation are realized, and the national requirement on detection of cyhalothrin in rice can be met.

Description

technical field [0001] The invention relates to the fields of green separation and environmental protection, in particular to a rice cyhalothrin adsorption material, a preparation method and an application thereof. Background technique [0002] Cyhalothrin, also known as cyhalothrin, is a pyrethroid imitation biopesticide. It has the advantages of broad insecticidal spectrum, good effect, and low residue. It is often used in cotton, fruit trees, soybeans and other crops on Lepidoptera and Coleoptera. , Hemiptera and mites pest control. With the widespread use of cyhalothrin, people pay more and more attention to it. Relevant studies have shown that cyhalothrin is an obvious accumulation substance with strong teratogenic and mutagenic effects. Therefore, it is of great significance to establish a unit capture analysis membrane technology for cyhalothrin in rice. [0003] The research on cyhalothrin at home and abroad mainly focuses on the effect of controlling insect pests...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/26B01J20/28G01N30/14G01N1/34G01N1/40
CPCB01J20/048B01J20/22B01J20/261B01J20/28016G01N1/34G01N1/405G01N30/14
Inventor 李宇亮段明昊马天培朱棋徐帅宗宇寒
Owner CHANGAN UNIV
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