ABSTRACT
Smith and El Rassi [ 45] described a procedure for bonding, in the presence of the BF3 catalyst, a low-molecular-mass HPC to the epoxide functional group provided from the GOX-pretreated silica surface. Then, a higher-molecular-mass HPC was adsorbed and cross-linked through the reaction of the primary alcohol groups of HPC with acidified formaldehyde. The EOF was almost suppressed and the usefulness of such capillaries was demonstrated with the high efficiencies [(5-7) x 105 plates/m] achieved for the separation of basic proteins at low pH.
