About: Large Volume Sample Stacking for Rapid and Sensitive Determination of Antidiabetic Drug Metformin in Human Urine and Serum by Capillary Electrophoresis with Contactless Conductivity Detection

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About: Large Volume Sample Stacking for Rapid and Sensitive Determination of Antidiabetic Drug Metformin in Human Urine and Serum by Capillary Electrophoresis with Contactless Conductivity Detection Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Two CE methods with contactless conductivity detection have been developed for determining the oral antidiabetic drug metformin in human urine and blood. The determination of metformin is performed on a separation capillary with an effective length of 14 cm, using a maximum voltage of 30 kV and with a small injection of 50-fold diluted urine into the capillary. Under these conditions, the migration time of metformin is 35 s and the LOD is 0.3 µM. Large-volume sample stacking was used to determine low metformin levels in serum. The injection of a sample of serum deproteinized with acetonitrile was 10 times greater compared to the injected amount of urine. This enabled reduction of the LOD to 0.03 µM and the metformin migration time equalled 86 s. The undesirable solvent from sample zone was forced out of the capillary to ensure rapidity and good repeatability of the determination. The RSD values for the migration time are 0.1 % for urine and 0.7 % for serum; RSD for the peak areas equalled 1.4 % for urine and 2.6 % for serum. The developed CE technique was tested on performance of routine analyses of metformin in the urine and serum of patients suffering from type II diabetes mellitus. Two CE methods with contactless conductivity detection have been developed for determining the oral antidiabetic drug metformin in human urine and blood. The determination of metformin is performed on a separation capillary with an effective length of 14 cm, using a maximum voltage of 30 kV and with a small injection of 50-fold diluted urine into the capillary. Under these conditions, the migration time of metformin is 35 s and the LOD is 0.3 µM. Large-volume sample stacking was used to determine low metformin levels in serum. The injection of a sample of serum deproteinized with acetonitrile was 10 times greater compared to the injected amount of urine. This enabled reduction of the LOD to 0.03 µM and the metformin migration time equalled 86 s. The undesirable solvent from sample zone was forced out of the capillary to ensure rapidity and good repeatability of the determination. The RSD values for the migration time are 0.1 % for urine and 0.7 % for serum; RSD for the peak areas equalled 1.4 % for urine and 2.6 % for serum. The developed CE technique was tested on performance of routine analyses of metformin in the urine and serum of patients suffering from type II diabetes mellitus. (en)
Title	Large Volume Sample Stacking for Rapid and Sensitive Determination of Antidiabetic Drug Metformin in Human Urine and Serum by Capillary Electrophoresis with Contactless Conductivity Detection Large Volume Sample Stacking for Rapid and Sensitive Determination of Antidiabetic Drug Metformin in Human Urine and Serum by Capillary Electrophoresis with Contactless Conductivity Detection (en)
skos:prefLabel	Large Volume Sample Stacking for Rapid and Sensitive Determination of Antidiabetic Drug Metformin in Human Urine and Serum by Capillary Electrophoresis with Contactless Conductivity Detection Large Volume Sample Stacking for Rapid and Sensitive Determination of Antidiabetic Drug Metformin in Human Urine and Serum by Capillary Electrophoresis with Contactless Conductivity Detection (en)
skos:notation	RIV/00216208:11120/14:43908436!RIV15-MSM-11120___
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	June 6
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Tůma, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / 3. lékařská fakulta
http://linked.open...dnocenehoVysledku	25673
http://linked.open...ai/riv/idVysledku	RIV/00216208:11120/14:43908436
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Rapid separation; Large volume sample stacking; Contactless conductivity detection; Capillary electrophoresis; Antidiabetic drug (en)
http://linked.open.../riv/klicoveSlovo	Antidiabetic drug Rapid separation Capillary electrophoresis Contactless conductivity detection Large volume sample stacking
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[30BA5CF5B96F]
http://linked.open...i/riv/nazevZdroje	Journal of Chromatography A
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	1345
http://linked.open...iv/tvurceVysledku	Tůma, Petr
http://linked.open...ain/vavai/riv/wos	000336709300023
issn	0021-9673
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.chroma.2014.04.016
http://localhost/t...ganizacniJednotka	11120

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