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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11120%2F14%3A43908436" target="_blank" >RIV/00216208:11120/14:43908436 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.chroma.2014.04.016" target="_blank" >http://dx.doi.org/10.1016/j.chroma.2014.04.016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chroma.2014.04.016" target="_blank" >10.1016/j.chroma.2014.04.016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 14cm, 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 ?M. 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 ?M 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 equal

Název v anglickém jazyce

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

Popis výsledku anglicky

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 14cm, 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 ?M. 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 ?M 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 equal

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chromatography A

ISSN

0021-9673

e-ISSN

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Svazek periodika

1345

Číslo periodika v rámci svazku

June 6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

207-211

Kód UT WoS článku

000336709300023

EID výsledku v databázi Scopus

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