Corn ochrarin absorbing material and preparation and application methods thereof
An adsorption material, ochratoxin technology, applied in the field of environmental science and engineering, can solve the problems of long penetration time, expensive equipment, complicated operation, etc., achieve the effect of wide linear range, easy operation, and avoid secondary pollution
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[0025] The preparation method of the ochratoxin adsorption material in corn of the present invention is fast and convenient, and special ionic liquid, salt and grafted chelating gel are used in the preparation, and the prepared regular hexagonal active adsorption material has high targeting and capture properties. Set efficiency, the method can reach 99.2% penetration rate of ochratoxin in corn, has wide linear range, low detection limit, small relative standard deviation, specifically, tetrabutylammonium chloride: sodium sulfate: poly The mass ratio of acrylamide-tetraethylenepentamine grafted chelate gel was 1:7:2.
[0026] The specific preparation process can be as follows: 21 parts of ionic liquid [TBA]Cl with a mass fraction of 17% and 63 parts of Na with a mass fraction of 36% 2 SO 4 Mix evenly to obtain a two-phase infiltration system, then add 16 parts of TEPA-PAM-Gel with a mass fraction of 40% TEPA-PAM-Gel to obtain a gel-like mixture, and burn the above-mentioned g...
Embodiment 1
[0032] 21 parts of ionic liquid [TBA]Cl with a mass fraction of 17% and 63 parts of Na with a mass fraction of 36% 2 SO 4 Mix evenly to obtain a two-phase infiltration system, then add 16 parts of TEPA-PAM-Gel with a mass fraction of 40% to obtain a gel-like mixture, burn the above-mentioned gel-like mixture at 150°C for two hours to obtain powdery particles, and then Store it in a vacuum oven at 40° C. and let it stand for 48 hours to prepare the adsorption material.
[0033] Corn: water: adsorption material = 4:8:1 mass ratio, stand at 26°C for 20 minutes, capture ochratoxin in the corn, then take out the corn and wash it with clean water. The permeability of the target before and after capture is recorded in Table 1.
Embodiment 2
[0035] 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, in this example, the ionic liquid is changed to [CF3SO3] (trifluoromethanesulfonic acid), and the rest of the conditions are unchanged, record The permeability of the target before and after capture is shown in Table 1.
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