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Type: Artigo de periódico
Title: Enhanced stability stationary phases based on poly(methyltetradecylsiloxane) immobilized onto doubly titanized silica particles
Author: Faria, AM
Collins, KE
Collins, CH
Abstract: This work describes the preparation and characterization of two stationary phases based on the immobilization of poly(methyltetradecylsiloxane) onto doubly titanized silica particles. Chromatographic tests indicate that these metallized silica-based stationary phases present similar chromatographic performance for apolar and polar compounds to those obtained for their bare silica-based counterparts. Spectroscopic characterizations indicate high residual silanol quantities on titanized silica-based stationary phases; however, this fact does not contribute to a high asymmetry factor for basic compounds as is usually found with titania-based stationary phases. These stationary phases may be useful for analysis of pharmaceuticals.
Subject: column liquid chromatography
stationary phases
thermal treatment
gamma radiation
titanized-silica support
Country: Alemanha
Editor: Vieweg
Citation: Chromatographia. Vieweg, v. 67, n. 41795, n. 357, n. 363, 2008.
Rights: fechado
Identifier DOI: 10.1365/s10337-008-0517-6
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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