

Author: Horiguchi Daisuke Ohyama Kaname Masunaga Tomoko Fujita Yoshiko Ali Marwa Fathy Bakr Kishikawa Naoya Kuroda Naotaka
Publisher: Oxford University Press
ISSN: 0021-9665
Source: Journal of Chromatographic Science, Vol.51, Iss.5, 2013-05, pp. : 425-429
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Abstract
Butyl methacrylate (BMA)-ethylene dimethacrylate (EDMA)-methacrylic acid (MAA) and BMA-EDMA-2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) monolithic columns were prepared by varying the percentage of ionic monomers for capillary electrochromatography. Monolithic columns with a higher content of ionic monomers provided better column efficiency, and the performance of BMA-EDMA-MAA monoliths was better than BMA-EDMA-AMPS. To characterize and optimize BMA-EDMA-MAA monoliths, the effects of the content of cross-linker and the total monomer in the polymerization mixture on column performance were also studied. Plate heights of 8.2 µm for the unretained solute (thiourea) and 12.6 µm for the retained solute (naphthalene) were achieved with a monolithic column using 2.5% MAA (Column I).
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