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Type: Artigo de periódico
Title: A New Generation Of More Ph Stable Reversed Phases Prepared By Silanization Of Zirconized Silica.
Author: Silva, César R
Airoldi, Claudio
Collins, Kenneth E
Collins, Carol H
Abstract: To further extend our studies in the search for reversed phases with enhanced durability at high pH, zirconized silica has now been explored as an alternative support. The synthesis of the new stationary phases involves silanization of a zirconium-modified silica support with a C(18) trifunctional silane, followed by endcapping. The chromatographic properties of the C(18) phases based on zirconized silica are similar to their titanized silica counterparts. Accelerated high pH stability tests, using phosphate mobile phases and elevated temperature, have shown that the zirconized silica phases have promising advantages not only over similarly prepared non-metalized phases but also over titanized silica C(18) phases.
Subject: Chemistry, Physical
Chromatography, High Pressure Liquid
Drug Stability
Hydrogen-ion Concentration
Magnetic Resonance Spectroscopy
Physicochemical Phenomena
Silicon Dioxide
Spectrometry, X-ray Emission
Spectrophotometry, Infrared
Citation: Journal Of Chromatography. A. v. 1191, n. 1-2, p. 90-8, 2008-May.
Rights: fechado
Identifier DOI: 10.1016/j.chroma.2008.01.017
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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