Chromatographic evaluation using basic solutes of the silanol activity of stationary phases based on poly(methyloctylsiloxane) immobilized onto silica

dc.creatorBorges, EM
dc.creatorCollins, CH
dc.date2011
dc.dateMAY
dc.date2014-07-30T13:59:26Z
dc.date2015-11-26T18:05:02Z
dc.date2014-07-30T13:59:26Z
dc.date2015-11-26T18:05:02Z
dc.date.accessioned2018-03-29T00:47:16Z
dc.date.available2018-03-29T00:47:16Z
dc.identifierJournal Of Separation Science. Wiley-blackwell, v. 34, n. 10, n. 1141, n. 1148, 2011.
dc.identifier1615-9306
dc.identifierWOS:000290635400007
dc.identifier10.1002/jssc.201000700
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/55847
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/55847
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1293019
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionThe chromatographic behaviors of some basic solutes were evaluated on stationary phases based on poly(methyloctylsiloxane) immobilized onto silica (PMOS-SiO(2)). The test solutes present both hydrophobic and hydrophilic properties. Evaluations of the pH effect used 80: 20 v/v methanol/buffered mobile phase over the pH range of 5-11.5 with inorganic buffers such as borate, carbonate and phosphate and with organic buffers such as citrate, tricine and triethylamine. Evaluations in acidic mobile phases used 50: 50 v/v and 30: 70 v/v methanol/buffer (pH 2.5; 20 mmol/L) mobile phases. The buffer concentration effect used 65:35 v/v methanol/phosphate (pH 7; 20 and 100 mmol/L) mobile phases. The results are compared with those obtained with two chemically bonded stationary phases. The immobilized phases show greater contributions from an ion-exchange mechanism than do the commercial phases. The results indicate that the silanol activity of PMOS-SiO(2) stationary phases can be adequately evaluated by using appropriate basic probes and mobile phases having different pH, using different buffers.
dc.description34
dc.description10
dc.description1141
dc.description1148
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherWiley-blackwell
dc.publisherMalden
dc.publisherEUA
dc.relationJournal Of Separation Science
dc.relationJ. Sep. Sci.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectBasic solutes
dc.subjectImmobilized polysiloxane
dc.subjectIon-exchange
dc.subjectRPLC
dc.subjectStationary phases
dc.subjectPerformance Liquid-chromatography
dc.subjectReversed-phase
dc.subjectRetention Behavior
dc.subjectPacking Materials
dc.subjectSurface Silanols
dc.subjectHplc
dc.subjectSeparations
dc.subjectReproducibility
dc.subjectPolysiloxanes
dc.subjectStability
dc.titleChromatographic evaluation using basic solutes of the silanol activity of stationary phases based on poly(methyloctylsiloxane) immobilized onto silica
dc.typeArtículos de revistas


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