Preparation method of electrochemical sensor for chloramphenicol content detection
A chloramphenicol and electrochemical technology, applied in the field of preparation of gold nanoparticles/functionalized metal framed gold electrodes, can solve the problems of small response, large particle size, no response, etc., and achieve fast response speed, signal-to-noise, etc. High ratio and good repeatability
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[0024] Specific steps are as follows:
[0025](1) Preparation of functionalized zinc metal-organic framework materials: Synthesize zinc metal-organic framework materials by hydrothermal synthesis, weigh 0.5–1 g of zinc nitrate into 20 mL of ultrapure water, and ultrasonically oxidize and disperse for 2 h to obtain solution a. Weigh 1 g of 2-methylimidazole and add it into 10 mL of ultrapure water, ultrasonically oxidize and disperse for 2 h to obtain solution b, add solution a into solution b, let it stand for 2 h, centrifuge at 8000 rpm for 4 min, wash, and wash at 50 Dry at ℃ for 2 h to obtain the zinc metal organic framework material; use the surface deposition cross-linking method to carry out ammonia functionalization on the zinc metal organic framework material, weigh 5 mg of the zinc metal organic framework material prepared above and disperse it in 10 mL of pH 7.0 0.08 mL of polyethyleneimine solution with a mass percentage of 10 %, stirred at 23 °C for 15 h, centrifug...
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