Stability Studies Of Stationary Phases From Poly(methyltetradecylsiloxane) Sorbed And Immobilized Onto Metalized And Unmodified Silicas.

dc.creatorFaria, Anizio M
dc.creatorTonhi, Edivan
dc.creatorCollins, Kenneth E
dc.creatorCollins, Carol H
dc.date2007-Aug
dc.date2015-11-27T13:10:18Z
dc.date2015-11-27T13:10:18Z
dc.date.accessioned2018-03-29T01:05:11Z
dc.date.available2018-03-29T01:05:11Z
dc.identifierJournal Of Separation Science. v. 30, n. 12, p. 1844-51, 2007-Aug.
dc.identifier1615-9306
dc.identifier10.1002/jssc.200700027
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/17638361
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/197386
dc.identifier17638361
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1297619
dc.descriptionStationary phases for RP-HPLC were prepared from metalized (titanized and zirconized) and unmodified silica particles using sorbed and immobilized poly(methyltetradecylsiloxane) (PMTDS). Different immobilization procedures, such as gamma irradiation and thermal treatments, were used for the preparation of the immobilized PMTDS phases. The stabilities of these stationary phases were evaluated by passing alkaline (pH 10) mobile phase through 60 mm x 3.9 mm columns of the different phases, with periodic tests to evaluate chromatographic performance. The results show that higher stabilities were obtained with stationary phases based on PMTDS immobilized on zirconized silica, these phases being 50% more stable than their titanized silica counterparts and 400% more stable than those based on unmodified silica. These supports provide higher chemical stability to the laboratory-made stationary phases, when compared with chemically bonded silica-based phases.
dc.description30
dc.description1844-51
dc.languageeng
dc.relationJournal Of Separation Science
dc.relationJ Sep Sci
dc.rightsfechado
dc.rights
dc.sourcePubMed
dc.subjectAdsorption
dc.subjectCarbon
dc.subjectChemistry Techniques, Analytical
dc.subjectChromatography
dc.subjectChromatography, High Pressure Liquid
dc.subjectHydrogen-ion Concentration
dc.subjectMetals
dc.subjectModels, Chemical
dc.subjectSilicon Dioxide
dc.subjectSiloxanes
dc.subjectTime Factors
dc.subjectZirconium
dc.titleStability Studies Of Stationary Phases From Poly(methyltetradecylsiloxane) Sorbed And Immobilized Onto Metalized And Unmodified Silicas.
dc.typeArtículos de revistas


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