Preparation method of pyrethroid molecular imprinting electrostatic spinning membrane
A technology of pyrethroids and pyrethroids is applied in the field of preparation of pyrethroid molecularly imprinted electrospinning films, which can solve the problems of poor versatility, large detection error, low reference value and the like, achieve mild conditions and improve accuracy , the effect of no safety hazard
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Embodiment 1
[0094] Example 1. Preparation of pyrethroid molecularly imprinted electrospinning membrane
[0095] Step 1. Add 50 mL of acetonitrile to 10 μL of diphenyl ether-biphenyl co-crystal with a concentration of 0.15 mol / L and 10 μL of ethyl chrysanthenate to dissolve, then add 30 mg of acrylamide with a concentration of 0.6 mol / L and place it on a shaker at room temperature Prepolymerized for 4 hours; then added 200 μL of 3 mol / L dimethyl glycol acrylate and 20 mg of azobisisobutyronitrile, and sonicated until completely dissolved; the reaction solution was filled with nitrogen for 15 minutes to remove oxygen, sealed and heated to 60 °C The vibration polymerization was carried out for 24 hours; after the reaction, the reaction solution was filtered to remove the supernatant, and the filter cake was washed with methanol and dried at 60° C. / v), eluted in a Soxhlet extractor to obtain a pyrethroid pesticide molecularly imprinted polymer (1 g);
[0096] Step 2. Dissolve 0.5 g of solid...
Embodiment 2
[0100] Example 2. Preparation of pyrethroid molecularly imprinted electrospinning membrane
[0101] Step 1. Add 120 mL of acetonitrile to 50 μL of diphenyl ether-biphenyl co-crystal with a concentration of 0.15 mol / L and 50 μL of ethyl chrysanthenate to dissolve, then add 110 mg of acrylamide with a concentration of 0.6 mol / L and place it on a shaker at room temperature Prepolymerized for 4 hours; then added 800 μL of 3 mol / L dimethyl glycol acrylate and 80 mg of azobisisobutyronitrile, and sonicated until completely dissolved; the reaction solution was filled with nitrogen for 15 minutes to remove oxygen, sealed and heated to 60 °C The vibration polymerization was carried out for 24 hours; after the reaction, the reaction solution was filtered to remove the supernatant, and the filter cake was washed with methanol and dried at 60° C. After drying, the solid was dried using 170 mL of acetic acid-methanol mixed solution (acetic acid: methanol was 2:8, v / v), eluted in a Soxhlet...
Embodiment 3
[0104] Example 3. Preparation of pyrethroid molecularly imprinted electrospinning membrane
[0105] Step 1. Add 200 mL of acetonitrile to dissolve 100 μL of diphenyl ether-biphenyl co-crystal with a concentration of 0.15 mol / L and 100 μL of ethyl chrysanthenate, and then add 200 mg of acrylamide with a concentration of 0.6 mol / L and place it on a shaker at room temperature Prepolymerize for 4h; then add 1500 μL of 3 mol / L dimethyl ethylene glycol acrylate and 20-150 mg of azobisisobutyronitrile, and ultrasonicate until completely dissolved; the reaction solution is filled with nitrogen for 15 minutes to remove oxygen, sealed and heated to 60 ° C for 24 hours of vibration polymerization; after the reaction, the reaction solution was filtered to remove the supernatant, the filter cake was washed with methanol and dried at 60 ° C; after drying, the solid was dried using 300 mL of acetic acid-methanol mixed solution (acetic acid: methanol was 2:8 , v / v), eluted in a Soxhlet extrac...
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