Abstract
The preparation and chromatographic performance of SE-54 columns into which have been incorporated 2-100% (w/w) of a pyrimidone moiety are described. The resulting pyrimidonesilicones were rendered non-extractable by treatment with peroxide. Best performance was obtained from a column with 4% incorporation of monomer which enabled 21 out of 22 barbiturates to be resolved. For the separation of difficult barbiturate pairs, columns with 30% or 50% incorporation of the monomer are recommended and an improved method for the preparation of these columns is described.
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