K. Tani, Y. Suzuki
Oct 1, 1996
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Influential Citations
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Journal
Journal of Liquid Chromatography & Related Technologies
Abstract
Abstract It is important to elucidate the effect of the support on retention when investigating the retention mechanism in reversed phase liquid chromatography. The objective of this research was to examine how octadecyl-modified phase can control the unique nature of Titania. Titania was synthesized in our laboratory by the sol-gel method. Octadecyl-modified Titania was prepared by silylation with a octadecyltriethoxysilane. By using anionic, cationic. acidic and basic solutes, the retention behaviours of the Titania and the octadecyl-modified Titania were determined under reversed phase conditions. In the use of aqueous methanol mobile phases containing acetic acid-sodium acetate or bicine-sodium hydroxide buffer, we observed that the Titania synthesized behaved as an amphoteric ion exchanger, and that the retention behaviours of the octadecyl-modified Titania were significantly influenced by octadecyl-modification. The effect of octadecyl-modification on retention was ascribed not only to octadecyl gro...