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Abstract
A simple, practical, and economical procedure had been developed to prepare novel C18 ether-bond reversed phase packing. A soft and long C18 alkyl chain was coupled onto silica (Sinopak-S, particle size d = 5μm, pore diameter Dp=11nm, and surface area s=170m2/g) with γ-glycidoxypropyltrimethoxysilane as a coupling agent. Characterization of prepared packing was carried out with elemental analysis and solid-state Citation[13]C NMR. Chromatographic evaluation indicates that its reversed phase behavior was similar to ordinary ODS.
ACKNOWLEDGMENTS
The authors wish to express their gratitude to Qiao Xia and Wang Yunfu for the preparation of the silica support. This work was supported by the National Natural Science Foundation of China.