Sorption of Amphenicols on Magnetic Hypercrosslinked Polystyrene

A study is performed of the sorption of chloramphenicol, florfenicol, and thiamphenicol on magnetic hypercrosslinked polystyrene (HCPS/Fe3O4). Magnetic HCPS is obtained via the sorption of Fe3O4 nanoparticles on commercially available HCPS Diapak P-3. The specific surface areas and parameters of the porous structure of the magnetic HCPS are determined by means of low-temperature nitrogen adsorption. It is found that introducing Fe3O4 nanoparticles into the HCPS matrix slightly lowers the specific surface area of the sorbent (from 1132 to 1080 m2/d) and the volume of pores, but these characteristics are strong enough to use the resulting composite as a sorbent. It is established that the HCPS-based magnetic sorbent exhibits superparamagnetic properties. The saturation magnetization is 1.7 emu/g, enough to extract the sorbent from the solution under the action of the magnetic field of a permanent magnet. It is shown that magnetic HCPS can be used for the group sorption concentration of amphenicols via magnetic solid-phase extraction.