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Voltammetric determination of the herbicide Bifenox in drinking and river water using a silver solid amalgam electrode
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SYSNO ASEP 0358328 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Voltammetric determination of the herbicide Bifenox in drinking and river water using a silver solid amalgam electrode Author(s) Barek, J. (CZ)
Cabalková, D. (CZ)
Fischer, J. (CZ)
Navrátil, Tomáš (UFCH-W) RID, ORCID
Pecková, K. (CZ)
Josypčuk, Bohdan (UFCH-W) RID, SAI, ORCIDSource Title Environmental Chemistry Letters - ISSN 1610-3653
Roč. 9, č. 1 (2011), s. 83-86Number of pages 4 s. Language eng - English Country DE - Germany Keywords differential pulse voltammetry ; silver solid amalgam electrode ; solid phase extraction Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/07/1195 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000287708200014 DOI 10.1007/s10311-009-0250-x Annotation A new method for the determination of submicromolar and nanomolar concentrations of herbicide Bifenox using differential pulse voltammetry at a mercury meniscus modified silver solid amalgam electrode is described. This new type of working electrode is non-toxic, environmentally friendly, and compatible with principles of green analytical chemistry, and its surface can be easily electrochemically renewed in the case of passivation. The newly developed direct differential pulse voltammetric determination of Bifenox gives limit of determination 6.7 center dot 10(-7) and 6.9 center dot 10(-7) M in drinking and river water, respectively. Both the selectivity and the sensitivity can be further increased by preliminary separation and preconcentration using solid phase extraction. This combination enables to reach limit of determination 0.9 x 10(-9) and 1.5 x 10(-9) M for drinking and river water, respectively. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2012
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