| abstract |
Use of a bead-shaped, highly porous polymer, prepared by suspension polymerization of at least one hydrophilic monomer and at least one hydrophobic monomer, for solid-phase extraction, characterized in that The hydrophilic monomer is an imidazole-containing monomer, The hydrophobic monomer is a mixture of isomeric divinylbenzene and isomeric ethylvinylbenzene monomers, The polymer has a pore diameter range of 5 Å to 1000 Å with an average pore diameter of 50 Å to 100 Å and has a pore volume of 1 ml / g to 2 ml / g, and - The pore volume is distributed to 15% to 25% micropores, 50% to 80% mesopores and 5% to 15% macropores. |