Analysis of ketoprofen and mefenamic acid by high-performance liquid chromatography with molecularly imprinted polymer as the stationary phase.

A simple and sensitive high-performance liquid chromatographic method for simultaneous determination of ketoprofen and mefenamic acid in tablets has been developed. HPLC with UV detection (220 nm) was performed on an analytical column packed with molecularly imprinted polymer (MIP) as the stationary phase. The MIPs are prepared by bulk polymerisation followed by crushing and sieving to the desired particle size.

Chromatographic characterization of molecularly imprinted polymers.

Recent efforts in the investigation of chromatographic characterization of molecularly imprinted polymers (MIPs) have focused mainly on the nature of heterogeneous binding sites. More data on the thermodynamics than on the kinetic features of MIP columns have been published. The present article addresses the sources of peak broadening and tailing, which are the main drawbacks often associated with imprinted polymers in chromatography for practical applications.

Chromatographic characteristics of cholesterol-imprinted polymers prepared by covalent and non-covalent imprinting methods.

Cholesterol-imprinted polymers were prepared in bulk polymerization by the methods of covalent and non-covalent imprinting. The former involved the use of a template-containing monomer, cholesteryl (4-vinyl)phenyl carbonate, while the latter used the complexes of template and functional monomer, methacrylic acid or 4-vinylpyridine prior to polymerization. Columns packed with these molecularly imprinted polymers (MIPs) were all able to separate cholesterol from other steroids.