|
|
|
|
K. Sakaki
[J. Chromatography, Vol.648, pp.451-457, 1993]
Aminopropyl-bonded silica packings with various bonding densities were prepared, and the separation behavior of fatty acid methyl esters on the prepared packings was investigated by supercritical fluid chromatography. The chromatographic behavior of the esters could be described by two kinds of selectivity: selectivity according to the chain-length and selectivity according to the degree of unsaturation. The selectivity according to chain length increased with the aminopropyl bonding density of the packing. On the other hand, the selectivity according to degree of unsaturation decreased as the aminopropyl bonding density increased. These selectivities were useful for the characterization of commercially available amino-bonded packings.