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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F09%3A00008420%21RIV10-MSM-25310___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
An almost orthogonal comprehensive two-dimensional liquid chromatogramy was developed for the separation of phenolic and flavone natural antioxidants by using combinations of a polyethylene glycol silica micro-column in the first dimension and a porous-shell fused-core C18 column in the second dimension, both in the reversed-phase mode. System ortogonality was improved using parallel gradients of acetonitrile in buffered mobile phase. A new approach was proposed to optimize matching segmented gradient profiles in the two dimensions. An algorithm was developed for automatic corrections of the shifts in retention in the second dimension induced by the parallel two-dimensional gradient operation technique. Using the porous-shell C18 column in the second dimension at elevated temperature (60 °C) and high pressure (480 bar) with optimized segmented profiles of the parallel gradients in the two dimensions, the overall separation time for comprehensive LCxLC was reduced to 30 min. An almost orthogonal comprehensive two-dimensional liquid chromatogramy was developed for the separation of phenolic and flavone natural antioxidants by using combinations of a polyethylene glycol silica micro-column in the first dimension and a porous-shell fused-core C18 column in the second dimension, both in the reversed-phase mode. System ortogonality was improved using parallel gradients of acetonitrile in buffered mobile phase. A new approach was proposed to optimize matching segmented gradient profiles in the two dimensions. An algorithm was developed for automatic corrections of the shifts in retention in the second dimension induced by the parallel two-dimensional gradient operation technique. Using the porous-shell C18 column in the second dimension at elevated temperature (60 °C) and high pressure (480 bar) with optimized segmented profiles of the parallel gradients in the two dimensions, the overall separation time for comprehensive LCxLC was reduced to 30 min.
dcterms:title
Optimization of two-dimensional gradient liquid chromatography separations Optimization of two-dimensional gradient liquid chromatography separations
skos:prefLabel
Optimization of two-dimensional gradient liquid chromatography separations Optimization of two-dimensional gradient liquid chromatography separations
skos:notation
RIV/00216275:25310/09:00008420!RIV10-MSM-25310___
n4:aktivita
n14:P n14:Z
n4:aktivity
P(GA203/07/0641), Z(MSM0021627502)
n4:cisloPeriodika
16
n4:dodaniDat
n15:2010
n4:domaciTvurceVysledku
n12:4487877 n12:1878840 n12:8169314
n4:druhVysledku
n13:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n17:predkladatel
n4:idSjednocenehoVysledku
332033
n4:idVysledku
RIV/00216275:25310/09:00008420
n4:jazykVysledku
n9:eng
n4:klicovaSlova
Flavones; Phenolic compounds; Comprehensive 2D LC; Gradient elution; Porous-shell columns
n4:klicoveSlovo
n7:Flavones n7:Comprehensive%202D%20LC n7:Porous-shell%20columns n7:Gradient%20elution n7:Phenolic%20compounds
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[B096DCD85772]
n4:nazevZdroje
Journal of Chromatography A
n4:obor
n18:CB
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n19:GA203%2F07%2F0641
n4:rokUplatneniVysledku
n15:2009
n4:svazekPeriodika
1216
n4:tvurceVysledku
Hájek, Tomáš Česla, Petr Jandera, Pavel
n4:zamer
n6:MSM0021627502
s:issn
0021-9673
s:numberOfPages
15
n11:organizacniJednotka
25310