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Voltammetric determination of homovanillic acid at boron doped diamond electrode for hollow fibre microextraction
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SYSNO ASEP 0470878 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Voltammetric determination of homovanillic acid at boron doped diamond electrode for hollow fibre microextraction Author(s) Hrdlička, V. (CZ)
Barek, J. (CZ)
Navrátil, Tomáš (UFCH-W) RID, ORCIDSource Title Proceedings of the 12th International students conference Modern Analytical Chemistry. - Praha : VŠCHT, 2016 / Nesměrák K. - ISBN 978-80-7444-044-1 Pages s. 206-210 Number of pages 5 s. Publication form Print - P Action ISC Modern Analytical Chemistry /12./ Event date 22.09.2016 - 23.09.2016 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords biomarkers ; boron doped diamond electrode ; hollow-fibre Subject RIV CG - Electrochemistry Institutional support UFCH-W - RVO:61388955 UT WOS 000391253800037 Annotation Presented work deals with hollow-fibre assisted liquid/liquid/liquid microextraction (HF-LPME) and subsequent voltammetric detection of clinical biomarker homovanillic acid (HVA). Three main areas are discussed: hollow fibre assisted extraction of HVA, voltammetric detection of HVA under basic conditions, and sensing in very small volumes. Using HF-PLME, HVA was extracted with 1-octanol as a supported liquid membrane with enrichment factor of 55 after 60 minutes of extraction. A novel method of miniaturized voltammetric determination of HVA using cathodically pretreated boron doped diamond electrode was also developed. Using differential pulse voltammetry, limit of detection, limit of quantificati was 1.9 mu mol dm(-3) on 6.6 mu mol dm(-3). 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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