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 |
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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 |
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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 |