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Statements

Subject Item
n2:RIV%2F00216208%3A11160%2F12%3A10124973%21RIV13-MSM-11160___
rdf:type
skos:Concept n10:Vysledek
rdfs:seeAlso
http://www.sciencedirect.com/science/article/pii/S0021967311018607
dcterms:description
Hydrophilic interaction liquid chromatography (HILIC) represents a modern MS-friendly approach to the analysis of polar compounds. To date especially silica-based HILIC stationary phases are utilized. Recently the papers concerning retention of polar analytes on unmodified titania and zirconia as well as a polybutadiene modified zirconia stationary phase under HILIC conditions have been published. In this work the investigation of a highly hydrophobic carbon-coated zirconia column under HILIC conditions was reported. The influence of buffer concentration, buffer type, pH and temperature on the elution and chromatographic efficiency were studied. The processes participating on the retention of polar compounds showed a multimodal character. The retention was governed rather by surface adsorption than phase partition in high ACN mobile phases. The ligand exchange remained an important retention force although the access of the analytes to the active surface was significantly hindered by the carbon coating. Besides ligand exchange and hydrophilic interactions also the hydrophobic carbon layer was involved in the retention of carboxylic acids and especially xanthines in the organic rich mobile phase. Hydrophilic interaction liquid chromatography (HILIC) represents a modern MS-friendly approach to the analysis of polar compounds. To date especially silica-based HILIC stationary phases are utilized. Recently the papers concerning retention of polar analytes on unmodified titania and zirconia as well as a polybutadiene modified zirconia stationary phase under HILIC conditions have been published. In this work the investigation of a highly hydrophobic carbon-coated zirconia column under HILIC conditions was reported. The influence of buffer concentration, buffer type, pH and temperature on the elution and chromatographic efficiency were studied. The processes participating on the retention of polar compounds showed a multimodal character. The retention was governed rather by surface adsorption than phase partition in high ACN mobile phases. The ligand exchange remained an important retention force although the access of the analytes to the active surface was significantly hindered by the carbon coating. Besides ligand exchange and hydrophilic interactions also the hydrophobic carbon layer was involved in the retention of carboxylic acids and especially xanthines in the organic rich mobile phase.
dcterms:title
The influence of a carbon layer deposited on a zirconia surface on the retention of polar analytes in an organic rich mobile phase The influence of a carbon layer deposited on a zirconia surface on the retention of polar analytes in an organic rich mobile phase
skos:prefLabel
The influence of a carbon layer deposited on a zirconia surface on the retention of polar analytes in an organic rich mobile phase The influence of a carbon layer deposited on a zirconia surface on the retention of polar analytes in an organic rich mobile phase
skos:notation
RIV/00216208:11160/12:10124973!RIV13-MSM-11160___
n10:predkladatel
n11:orjk%3A11160
n4:aktivita
n6:S n6:I
n4:aktivity
I, S
n4:cisloPeriodika
1
n4:dodaniDat
n16:2013
n4:domaciTvurceVysledku
n18:8288763 n18:3249719 n18:1330780
n4:druhVysledku
n8:J
n4:duvernostUdaju
n15:S
n4:entitaPredkladatele
n14:predkladatel
n4:idSjednocenehoVysledku
141308
n4:idVysledku
RIV/00216208:11160/12:10124973
n4:jazykVysledku
n20:eng
n4:klicovaSlova
Ligand exchange; Carboxylates; Xanthines; Hydrophilic interaction chromatography; Zirconia; Carbon-coated zirconia
n4:klicoveSlovo
n7:Ligand%20exchange n7:Hydrophilic%20interaction%20chromatography n7:Xanthines n7:Carbon-coated%20zirconia n7:Zirconia n7:Carboxylates
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[0B8024AF7290]
n4:nazevZdroje
Journal of Chromatography A
n4:obor
n19:CB
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:rokUplatneniVysledku
n16:2012
n4:svazekPeriodika
1232
n4:tvurceVysledku
Klimeš, Jiří Kučera, Radim Kalafut, Peter
n4:wos
000302423000031
s:issn
0021-9673
s:numberOfPages
6
n5:doi
10.1016/j.chroma.2011.12.058
n3:organizacniJednotka
11160