Contactless conductometric determination of methanol and ethanol in samples containing water after their electrophoretic desalination

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10318712" target="_blank" >RIV/00216208:11310/15:10318712 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11120/15:43909809

Výsledek na webu

<a href="http://dx.doi.org/10.1002/elps.201500174" target="_blank" >http://dx.doi.org/10.1002/elps.201500174</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/elps.201500174" target="_blank" >10.1002/elps.201500174</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Contactless conductometric determination of methanol and ethanol in samples containing water after their electrophoretic desalination

Popis výsledku v původním jazyce

Determination of the contents of methanol and ethanol in aqueous solutions was performed by measuring the permittivity of solutions using a contactless conductivity detector ((CD)-D-4) normally used for detection in capillary electrophoresis. The detection cell is a section of a fused silica capillary with an internal diameter of 50 m with a pair of conductivity electrodes on the external walls. The (CD)-D-4 response to samples of methanol/water and ethanol/water mixtures is linear in the concentrationinterval of approx. 40-100% v/v alcohol content. In the analysis of technical samples of methanol and ethanol, the determination is disturbed by the presence of even trace amounts of salts. This interference can be effectively eliminated by integrated electrophoretic desalination of the sample by the application of a direct current electric voltage with a magnitude of 10 kV to the capillary with the injected sample zone. Under these conditions, the ions migrate out of the sample zone and

Název v anglickém jazyce

Contactless conductometric determination of methanol and ethanol in samples containing water after their electrophoretic desalination

Popis výsledku anglicky

Determination of the contents of methanol and ethanol in aqueous solutions was performed by measuring the permittivity of solutions using a contactless conductivity detector ((CD)-D-4) normally used for detection in capillary electrophoresis. The detection cell is a section of a fused silica capillary with an internal diameter of 50 m with a pair of conductivity electrodes on the external walls. The (CD)-D-4 response to samples of methanol/water and ethanol/water mixtures is linear in the concentrationinterval of approx. 40-100% v/v alcohol content. In the analysis of technical samples of methanol and ethanol, the determination is disturbed by the presence of even trace amounts of salts. This interference can be effectively eliminated by integrated electrophoretic desalination of the sample by the application of a direct current electric voltage with a magnitude of 10 kV to the capillary with the injected sample zone. Under these conditions, the ions migrate out of the sample zone and

Druh

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

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

—

Projekt

<a href="/cs/project/GA15-03139S" target="_blank" >GA15-03139S: Nové elektroforetické přístupy pro studium obezity a diabetu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Electrophoresis

ISSN

0173-0835

e-ISSN

—

Svazek periodika

36

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

1976-1981

Kód UT WoS článku

000360055300025

EID výsledku v databázi Scopus

2-s2.0-84939451346