Thermodynamic consideration of the retention mechanism in a poly(perfluoroalkyl ether) gas chromatographic stationary phase used in packed columns

cic.institucionOrigenCentro de Investigación y Desarrollo en Tecnología de Pinturases
cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloCentro de Investigación y Desarrollo en Tecnología de Pinturases
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dc.date.accessioned2019-10-22T16:46:39Z
dc.date.available2019-10-22T16:46:39Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/10373
dc.titleThermodynamic consideration of the retention mechanism in a poly(perfluoroalkyl ether) gas chromatographic stationary phase used in packed columnsen
dc.typeArtículoes
dcterms.abstractRetention voluntes of fifteen hydrocarbons were measured in columns containing several concentrations of a commercial poly(perfluoroalkyl ether), Fomblin Y HVAC 140/13, as the stationary phase. Two different type ofpacking were studied: one ofthem employed pre-silylated Chromosorb P AW DMCS as the solid support, and the other type wasprepared by coating the stationary phase on Chromosorb P AW and silylating on-column. On-column silylated columns showed unequivocal symptoms of partial deactivation; retention volumes changed regularly with the contení of stationary phase in pre-silylated columns. Analysis of retention in pre-silylated columns indicates that a mixed mechanism (partition and adsorption on the gas-liquid interface) is operative. Systems hydrocarbon + perfluorocompound show pronounced positive deviations from the ideal behaviour that can be attributed to repulsión between the hydrocarbon and the perfluorocompund segments.en
dcterms.alternativeConsideraciones termodinámicas acerca del mecanismo de retención en un poli(perfluoroalquil eter) utilizado como fase estacionaria en columnas rellenas para cromolitografía gaseosaes
dcterms.creator.authorCastells, R. C.es
dcterms.creator.authorRomero, L. M.es
dcterms.creator.authorNardillo, A. M.es
dcterms.extentp. 63-76es
dcterms.identifier.otherISSN 0325-4186es
dcterms.isPartOf.issue1996es
dcterms.isPartOf.seriesAnales CIDEPINTes
dcterms.issued1996
dcterms.languageIngléses
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.subjectGas chromatographyen
dcterms.subjectPoly(perfluoroalkyl ether)en
dcterms.subjecthidrocarbonsen
dcterms.subjectadsorption on liquid surfacesen
dcterms.subjectmixed retentionen
dcterms.subject.materiaCiencias Químicases
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