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.
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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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