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Type: Artigo de periódico
Title: High-performance Liquid Chromatographic Stationary Phases Based On Poly(methyloctylsiloxane) Immobilized On Silica. Ii. Chromatographic Evaluation.
Author: Tonhi, Edivan
Collins, Kenneth E
Collins, Carol H
Abstract: This work describes the chromatographic characterization of stationary phases prepared by deposition of poly(methyloctylsiloxane) (PMOS) on silica followed by immobilization using one of several different processes: thermal treatments (120 or 220 degrees C for 4 h), microwave irradiation (495 W for 15 min), gamma radiation (dose of 80 kGy) or self-immobilization. This evaluation was based on the chromatographic parameters of several test solutes. The stationary phases immobilized at 220 degrees C and which underwent self-immobilization were not appropriate for chromatographic use but the other immobilized phases presented chromatographic performances similar in most respects to a commercial phase (Rainin C8) while the peak characteristics of the basic probe were significantly better with these phases.
Subject: Carbon
Chemistry, Physical
Chromatography, High Pressure Liquid
Gamma Rays
Indicators And Reagents
Physicochemical Phenomena
Silicon Dioxide
Citation: Journal Of Chromatography. A. v. 948, n. 1-2, p. 109-19, 2002-Mar.
Rights: fechado
Identifier DOI: 
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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