The invention discloses a preparation method of a magnetic nanometer
molecular imprinting composite material related to
estrogen, comprising the following steps: dissolving bivalent iron salt and trivalent iron salt into water, performing
ultrasonic dispersion, heating and regulating the
system till being alkali, stirring the
system, performing
magnetic separation, washing the
system till that pH is 6-8, and
drying the system; adding
ethanol solution, performing heating, stirring and dropping
oleic acid, performing
magnetic separation, washing the system till that pH is 7.0, and
drying the system; adding a dispersant, a
polymerization monomer, a
functional monomer and a
cross linker, and performing
ultrasonic dispersion; adding an initiator, performing heating, stirring and
magnetic separation, washing the system till that pH is 6-8, and
drying the system; adding a composite reaction liquid of a template molecule and amino functional
reagent, performing heating, stirring and magnetic separation, washing the system till that pH is 6-8, and drying the system to obtain a target product. The preparation method has the advantages of simple preparation process, controllable magnetic content, controllable functional group proportion and so on, and can arrive at a high
enrichment factor when being applied in residual trace
phenol environmental estrogens in enrichment drinking water.