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Abstract: Novel water-compatible magnetic molecularly imprinted polymers were developed. The magnetic core was firstly grafted by methyl acrylate and ethanediamine to increase the number of amino groups, which could immobilize more templates and form high-density recognition sites. Dopamine was adopted as functional monomer and crosslinker to retighten templates and prepare hydrophilic polymers. The characterization, adsorption capability, selectivity, and reusability were investigated in detail. The limit of detection and quantification of the method were 0.01 μg mL-1 and 0.038 μg mL-1. The experimental results exhibited that the resultant nanomaterials had high crystallinity, satisfactory magnetic property, fast kinetics, favorable adsorption capacity, excellent specificity, and pleasing recovery after a mild elution. In addition, the recoveries of the proposed method at four spiked levels analysis were between 98.4% to 101.3%. The obtained imprinted nanoparticles were used as sorbents for selective separation and determination of chlorogenic acid in Honeysuckle tea
Template and target information: chlorogenic acid
Author keywords: surface imprinting, magnetic separation, Immobilized template strategy, chlorogenic acid