Original title: Hollow-fibre Based Microextraction and Voltammetric Determination of Vanillylmandelic Acid
Authors: Hrdlička, Vojtěch ; Barek, J. ; Navrátil, Tomáš
Document type: Papers
Conference/Event: Moderní elektrochemické metody /37./, Jetřichovice (CZ), 20170515
Year: 2017
Language: eng
Abstract: 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.
Keywords: Hollow-fibres; Liquid phase microextraction; Voltammetry
Project no.: GA17-03868S (CEP)
Funding provider: GA ČR
Host item entry: XXXVII. Moderní elektrochemické metody. Sborník přednášek mezinárodní odborné konference, ISBN 978-80-905221-5-2

Institution: J. Heyrovsky Institute of Physical Chemistry AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0284894

Permalink: http://www.nusl.cz/ntk/nusl-380937


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Research > Institutes ASCR > J. Heyrovsky Institute of Physical Chemistry
Conference materials > Papers