https://www.selleckchem.com/pr....oducts/sch-900776.ht
Magnetism-assisted in-tube solid phase microextraction based on porous monolith mingled with Fe3 O4 nanoparticles was developed for capture of phenolic acids in fruit juices. First, poly (1-allyl-3-methylimidazolium bis [(trifluoro methyl) sulfonyl] imide-co-ethylene dimethacrylate) monolith embedded with Fe3 O4 nanoparticles was facile fabrication in a capillary and employed as microextraction column. Subsequently, a magnetic coil adopted to produce variable magnetic fields during extraction stage was twined on the microextraction c