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| rdf:type
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| Description
| - Separation of enantiomers represents an extremely important task in the field of analytical chemistry. This paper contributes to the field of the on-line preconcentration of enantiomers by developing a novel setup based on the electrokinetic accumulation of ketoprofen enantiomers on the pH boundary followed by enantioselective mobilization by a mixture of SDS, sulfated-beta-cyclodextrin (S-beta-CD), and trimethyl-beta-cyclodextrin (TM-beta-CD). Under the best conditions, where the injection electrolyte was composed of 50 mmol L-1 borate/NaOH pH 9.5 with 60% (v/v) methanol, the background electrolyte contained 50 mmol L-1 phosphate/NaOH pH 2.5, and the mobilization electrolyte consisted of 50 mmol L-1 phosphate/NaOH pH 2.5 with 4.0% (w/v) S-beta-CD, 0.5% (w/v) TM-beta-CD, and 20 mmol L-1 SDS, the determination of nanomolar concentration levels of ketoprofen enantiomers was successful by using micellar electrokinetic chromatography with a common UV detection. LODs were 2.5 nmol L-1 and 3.4 nmol L-1, which represent enhancement factors of 9921 and 8529, respectively. The method was also applied to the determination of ketoprofen enantiomers in waste water samples by using simple filtration as a clean-up step. Here, the recovery of ketoprofen enantiomers was 91% at the concentration level of 5x10(-9) mol L-1.
- Separation of enantiomers represents an extremely important task in the field of analytical chemistry. This paper contributes to the field of the on-line preconcentration of enantiomers by developing a novel setup based on the electrokinetic accumulation of ketoprofen enantiomers on the pH boundary followed by enantioselective mobilization by a mixture of SDS, sulfated-beta-cyclodextrin (S-beta-CD), and trimethyl-beta-cyclodextrin (TM-beta-CD). Under the best conditions, where the injection electrolyte was composed of 50 mmol L-1 borate/NaOH pH 9.5 with 60% (v/v) methanol, the background electrolyte contained 50 mmol L-1 phosphate/NaOH pH 2.5, and the mobilization electrolyte consisted of 50 mmol L-1 phosphate/NaOH pH 2.5 with 4.0% (w/v) S-beta-CD, 0.5% (w/v) TM-beta-CD, and 20 mmol L-1 SDS, the determination of nanomolar concentration levels of ketoprofen enantiomers was successful by using micellar electrokinetic chromatography with a common UV detection. LODs were 2.5 nmol L-1 and 3.4 nmol L-1, which represent enhancement factors of 9921 and 8529, respectively. The method was also applied to the determination of ketoprofen enantiomers in waste water samples by using simple filtration as a clean-up step. Here, the recovery of ketoprofen enantiomers was 91% at the concentration level of 5x10(-9) mol L-1. (en)
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| Title
| - Separation of ketoprofen enantiomers at nanomolar concentration levels by micellar electrokinetic chromatography with on-line electrokinetic preconcentration
- Separation of ketoprofen enantiomers at nanomolar concentration levels by micellar electrokinetic chromatography with on-line electrokinetic preconcentration (en)
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| skos:prefLabel
| - Separation of ketoprofen enantiomers at nanomolar concentration levels by micellar electrokinetic chromatography with on-line electrokinetic preconcentration
- Separation of ketoprofen enantiomers at nanomolar concentration levels by micellar electrokinetic chromatography with on-line electrokinetic preconcentration (en)
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| skos:notation
| - RIV/61989592:15310/13:33147305!RIV14-GA0-15310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(ED2.1.00/03.0058), P(EE2.3.20.0018), P(GAP206/12/1150), S
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989592:15310/13:33147305
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Ketoprofen; On-line preconcentration; Chiral separation; Capillary electrophoresis (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Central European Journal of Chemistry
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Petr, Jan
- Maier, Vítězslav
- Znaleziona, Joanna
- Ševčík, Juraj
- Ginterová, Pavlína
- Knob, Radim
- Lošťáková, Markéta
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| http://linked.open...ain/vavai/riv/wos
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| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| - 10.2478/s11532-012-0177-0
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| http://localhost/t...ganizacniJednotka
| |
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