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Hollow-fibre Based Microextraction and Voltammetric Determination of Vanillylmandelic Acid
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SYSNO ASEP 0487242 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Hollow-fibre Based Microextraction and Voltammetric Determination of Vanillylmandelic Acid Author(s) Hrdlička, Vojtěch (UFCH-W) ORCID, RID, SAI
Barek, J. (CZ)
Navrátil, Tomáš (UFCH-W) RID, ORCIDSource Title XXXVII. Moderní elektrochemické metody. Sborník přednášek mezinárodní odborné konference. - Ústí nad Labem : Best servis, 2017 / Navrátil Tomáš ; Fojta Miroslav ; Schwarzová Karolína - ISBN 978-80-905221-5-2 Pages s. 66-70 Number of pages 5 s. Publication form Print - P Action Moderní elektrochemické metody /37./ Event date 15.05.2017 - 19.05.2017 VEvent location Jetřichovice Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords Hollow-fibres ; Liquid phase microextraction ; Voltammetry Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) R&D Projects GA17-03868S GA ČR - Czech Science Foundation (CSF) Institutional support UFCH-W - RVO:61388955 UT WOS 000432424300015 Annotation New method of liquid/liquid/liquid hollow fibre based microextraction of vanillylmandelic acid coupled with voltammetric determination is being developed. Selected liquid membranes based on alcohols, aliphatic hydrocarbons and esters were tested. Highest enrichment factor of 2.52 after 30 minutes of extraction was obtained using propyl benzoate, RSD = 18.2 % (n=5). Mechanically and cathodically pretreated (-1000 mV vs. Ag/AgCl/3M KCl, 15 s) boron doped diamond electrode in a miniaturized arrangement was used for DPV determination. LOD = 1.2 micromol/l, RSD = 5.9% (n=10) for a 10 microl extract. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2019
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