Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/79292
Type: Artigo de periódico
Title: Synthesis, characterization, and chromatographic evaluation of titanium tetrabutoxide-modified silica as a support for HPLC-RP separations in alkaline mobile phases
Author: Silva, RB
Gushikem, Y
Collins, CH
Abstract: Gamma radiation was used to immobilize poly(methyloctylsiloxane) (PMOS) onto the surface of silica particles titanized by reaction with titanium tetrabutoxide. The irradiated particles were extracted with CH2Cl2 and subsequently packed into HPLC columns for testing. The PMOS- based stationary phases were tested chromatographically after each of a series of washings with pH 7 and pH 12 MeOH:NaOH(aq) 70:30 (v/v) mobile phases. Very slight decreases in column efficiency or retention time and no evidence of support dissolution were observed with either mobile phase.
Subject: titanium modified silica
poly(methyloctylsiloxane) stationary phases
high performance liquid chromatography-HPLC
radiation immobilization
high pH mobile phase
Country: Alemanha
Editor: Wiley-v C H Verlag Gmbh
Rights: fechado
Identifier DOI: 10.1002/1615-9314(20010101)24:1<49
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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