Method for detecting recovery rate of [2,2-bis(4-hydroxyphenol)propane] absorbed by using aptamer functional magnetic nanomaterial
A magnetic nano-functionalization technology, applied in the field of detection of organic matter, can solve the problems of complex pretreatment methods, BPA leaching, ingestion, etc., and achieve the effect of simple method, low detection limit and good selectivity
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[0030] A method for magnetic separation of bisphenol A by aptamer functionalized magnetic nanomaterials, synthesis of magnetic nanoparticles, aptamer functionalized magnetic nanoparticles, and aptamer functionalized magnetic biosensors to adsorb target bisphenol A, And after elution, it is detected by high performance liquid phase; the specific steps are:
[0031] (1) Synthesis of 100nm magnetic nanoparticles
[0032] 100nm magnetic nanomaterials (Fe 3 o 4 ) were synthesized by hydrothermal method. Accurately weigh 2g of ferric chloride hexahydrate and 4.8g of sodium acetate and dissolve them in 60mL of ethylene glycol, then add 1.5g of polyethylene glycol and fully stir for 2 hours under the action of a mechanical stirrer, transfer all the yellow liquid to a container with polyethylene glycol In a sealed stainless steel hydrothermal reaction kettle with a tetrafluoroethylene liner (100 mL), heat and react in an oil bath at 210° C. for 12 h. After the reaction was complete...
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