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Possibilities of Hollow Fiber Microextraction and Voltammetric Detection of Homovanillic acid
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SYSNO ASEP 0459727 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Possibilities of Hollow Fiber Microextraction and Voltammetric Detection of Homovanillic acid Author(s) Hrdlička, V. (CZ)
Barek, J. (CZ)
Navrátil, Tomáš (UFCH-W) RID, ORCIDSource Title XXXVI. Moderní elektrochemické metody. Sborník přednášek. - Ústí nad Labem : Best servis, 2016 / Navrátil T. ; Fojta M. ; Schwarzová K. - ISBN 978-80-905221-4-5 Pages s. 74-77 Number of pages 4 s. Publication form Print - P Action Moderní elektrochemické metody /36./ Event date 23.05.2016 - 27.05.2016 VEvent location Jetřichovice Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords Hollow-fibers ; Liquid phase microextraction ; voltammetry Subject RIV CG - Electrochemistry Institutional support UFCH-W - RVO:61388955 UT WOS 000389898200017 Annotation The contribution deals with hollow fiber liquid phase microextraction (HF-LPME) of homovanillic acid (HVA) and its subsequent voltammetric detection. In HF-LPME, HVA is extracted from acidic sample through thin supported liquid membrane into basic aqueous acceptor solution. Since common electrode materials such as gold, platinum or glassy carbon are only able to detect HVA under acidic or neutral conditions, a new method was developed, utilizing silica gel modified carbon paste electrode (CPE). Reached limit of detection in a 10 μL drop of the HVA extract of pH 13 was 1·10-5 mol L-1. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2017
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