A new electromembrane extraction probe for on-line connection with capillary electrophoresis for determination of substances in biological matrices

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11120%2F23%3A43924371" target="_blank" >RIV/00216208:11120/23:43924371 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/23:10451191
Result on the web
<a href="https://doi.org/10.1016/j.talanta.2022.124149" target="_blank" >https://doi.org/10.1016/j.talanta.2022.124149</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.talanta.2022.124149" target="_blank" >10.1016/j.talanta.2022.124149</a>

Result language
angličtina
Original language name
A new electromembrane extraction probe for on-line connection with capillary electrophoresis for determination of substances in biological matrices
Original language description
A miniature probe for electromembrane extraction is developed and constructed. The tubular probe with an internal volume of 1.1 μL is made of polypropylene hollow fiber with a supported liquid membrane of 85% nitrophenyloctyl ether (NPOE) with 15% bis(2-ethylhexyl)phosphonic acid (DEHP). The probe is connected on-line to the electrophoresis with short separation capillary via an air assisted flow gating interface cast from poly (dimethylsiloxane). The compact instrument is computer controlled via LabView. The probe parameters are tested for extraction of creatinine and basic amino acids from artificial solution and human urine. The sensitivity of the electrophoretic determination after 300 s extraction at 150 V compared to the sensitivity without extraction is 4.9-fold and 2.6-fold higher for creatinine and arginine, respectively. The RSDs for peak area measured from 5 repeated extractions of 50 μM solutions are 7.5%, 7.2%, 8.6% and 9.2% for Crea, Lys, Arg and His, respectively. The probe can be used for all-day measurements. The preparation of the probe is simple and requires no special tool.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry

Project
<a href="/en/project/GA22-22398S" target="_blank" >GA22-22398S: Microfluidic and electronic devices for on-line electrophoretic analysis of adipose tissue</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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