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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F03%3A00007432%21RIV%2F2004%2FGA0%2F223404%2FN
rdf:type
n11:Vysledek skos:Concept
dcterms:description
A physically adsorbed and covalently bonded prophyrin derivative, 5.10.15.20-tetrakis(pentafluorophenyl)porphyrin, H2TPFPP, has been used as a fused-silica capillary wall modifier in open tubular capillary electrochromatography (OT-CEC), and its influence on the electroosmotic flow (EOF) velocity and on the selectivity of TO-CEC separations of a set of model aromatic carobxylic acids has been tested. Whereas most of the coatings of this cattegory bring about an increase in selectivity with a concomitantslow down of the EOF,H2TPFPP/ coating, depending of pH of the background electrolyte used, resulted both in decreasing of EOF at pH 8,5 by 5% and in increasing of EOF by 10-43% at pH 6 and 5, respectively.The separation efficiency and the resolution of aromatic carboxylic acids separation in coated capillaries, namely in that one with covalent coating, were better than in the bure fused-silica capillary. The perspectives of H2TPFPP as calillary wall modifier are visualized in introducing well defined e A physically adsorbed and covalently bonded prophyrin derivative, 5.10.15.20-tetrakis(pentafluorophenyl)porphyrin, H2TPFPP, has been used as a fused-silica capillary wall modifier in open tubular capillary electrochromatography (OT-CEC), and its influence on the electroosmotic flow (EOF) velocity and on the selectivity of TO-CEC separations of a set of model aromatic carobxylic acids has been tested. Whereas most of the coatings of this cattegory bring about an increase in selectivity with a concomitantslow down of the EOF,H2TPFPP/ coating, depending of pH of the background electrolyte used, resulted both in decreasing of EOF at pH 8,5 by 5% and in increasing of EOF by 10-43% at pH 6 and 5, respectively.The separation efficiency and the resolution of aromatic carboxylic acids separation in coated capillaries, namely in that one with covalent coating, were better than in the bure fused-silica capillary. The perspectives of H2TPFPP as calillary wall modifier are visualized in introducing well defined e
dcterms:title
Influencing electroosmotic flow and selectivity in open tubular electrochromatography by tetrakis(pentafluorophenyl)porphyrin as capillary wall modifier Influencing electroosmotic flow and selectivity in open tubular electrochromatography by tetrakis(pentafluorophenyl)porphyrin as capillary wall modifier
skos:prefLabel
Influencing electroosmotic flow and selectivity in open tubular electrochromatography by tetrakis(pentafluorophenyl)porphyrin as capillary wall modifier Influencing electroosmotic flow and selectivity in open tubular electrochromatography by tetrakis(pentafluorophenyl)porphyrin as capillary wall modifier
skos:notation
RIV/60461373:22340/03:00007432!RIV/2004/GA0/223404/N
n3:strany
111-119
n3:aktivita
n17:Z n17:P
n3:aktivity
P(GA203/01/0288), P(GA203/02/1467), Z(AV0Z4055905), Z(AV0Z5011922), Z(MSM 223400008)
n3:cisloPeriodika
990
n3:dodaniDat
n14:2004
n3:domaciTvurceVysledku
n12:2796546 n12:4522990 n12:2247704
n3:druhVysledku
n19:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
610435
n3:idVysledku
RIV/60461373:22340/03:00007432
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Electroosmotic flow; Selectivity; Electrochromatography; Coated capillaries; pH effects; Tetrakis(pentafluorophenyl)porphyrin; Carboxylic acids
n3:klicoveSlovo
n9:Electroosmotic%20flow n9:Carboxylic%20acids n9:Electrochromatography n9:Tetrakis%28pentafluorophenyl%29porphyrin n9:pH%20effects n9:Selectivity n9:Coated%20capillaries
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[6CA6B742744F]
n3:nazevZdroje
Journal of Chromatography A
n3:obor
n15:CB
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:projekt
n18:GA203%2F02%2F1467 n18:GA203%2F01%2F0288
n3:rokUplatneniVysledku
n14:2003
n3:svazekPeriodika
990
n3:tvurceVysledku
Charvátová, Jana Deyl, Zdeněk Král, Vladimír Kašička, V.
n3:zamer
n8:AV0Z5011922 n8:MSM%20223400008 n8:AV0Z4055905
s:issn
0021-9673
s:numberOfPages
9
n5:organizacniJednotka
22340