| 摘要 |
<p>The sorbent comprises spherical, highly porous polymer formed by suspension polymerization of hydrophilic monomer(s) containing imidazole group, and hydrophobic monomer(s) containing mixture of isomeric diphenyl benzene and isomeric ethylvinyl benzene monomer(s). The sorbent has pore diameter of 5-1000Å, average pore diameter of 50-50Å and pore volume of 1-2 ml/g comprising 15-25% micropores, 50-80% mesopores and 5-30% macropores. The sorbent is formed by radical polymerization or terpolymerization of 1-vinyl imidazole, 4-vinyl imidazole, 1-vinyl-2-methyl imidazole, 1-vinyl-2-ethyl imidazole, 1-propenyl-2-methyl imidazole or 1-allyl-2-methyl imidazole with mixture of divinyl benzene and ethylvinyl benzene and optionally comprises functional monomer such as acrylic acid or methacrylic acid and/or their alkyl esters or alkyl amides. The sorbent comprises copolymer of N-vinyl imidazole and divinyl benzene. An independent claim is included for solid-phase extraction from solution using the sorbent.</p> |
