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dc.date.accessioned 2019-10-22T16:46:39Z
dc.date.available 2019-10-22T16:46:39Z
dc.identifier.uri http://digital.cic.gba.gob.ar/handle/11746/10373
dc.title Thermodynamic consideration of the retention mechanism in a poly(perfluoroalkyl ether) gas chromatographic stationary phase used in packed columns en
dc.type Artículo es
dcterms.abstract Retention 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.alternative Consideraciones termodinámicas acerca del mecanismo de retención en un poli(perfluoroalquil eter) utilizado como fase estacionaria en columnas rellenas para cromolitografía gaseosa es
dcterms.extent p. 63-76 es
dcterms.issued 1996
dcterms.language Inglés es
dcterms.license Attribution 4.0 International (BY 4.0) es
dcterms.subject Gas chromatography en
dcterms.subject Poly(perfluoroalkyl ether) en
dcterms.subject hidrocarbons en
dcterms.subject adsorption on liquid surfaces en
dcterms.subject mixed retention en
cic.version info:eu-repo/semantics/publishedVersion es
dcterms.creator.author Castells, R. C. es
dcterms.creator.author Romero, L. M. es
dcterms.creator.author Nardillo, A. M. es
cic.lugarDesarrollo Centro de Investigación y Desarrollo en Tecnología de Pinturas es
dcterms.subject.materia Ciencias Químicas es
dcterms.identifier.other ISSN 0325-4186 es
dcterms.isPartOf.issue 1996 es
dcterms.isPartOf.series Anales CIDEPINT es
cic.isPeerReviewed true es
cic.isFulltext true es
cic.institucionOrigen Centro de Investigación y Desarrollo en Tecnología de Pinturas es


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