About: Electrolysis in electromembrane extractions. Effects on extraction performance for substituted phenols

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About: Electrolysis in electromembrane extractions. Effects on extraction performance for substituted phenols Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.ce-ce.org/CECE2014/CECE%202014%20proceedings_full.pdf
Description	Electrolysis was shown to play a significant role in electromembrane extraction (EME) performance. Alkaline acceptors, prepared as 1 – 10 mM CsOH solutions, suffered from electrolytic reactions during EMEs of substituted phenols and their pH values decreased by more than 8 units after 40 min of EMEs at 50 V. As a consequence, serious deterioration of EME performance was observed for weak and medium-strong acidic phenols due to their compromised ionization and their subsequent back-extraction into organic phase and donor solution. Application of acceptor solutions consisting of high concentrations of weak bases (e.g. 500 mM ethanolamine) ensured similar initial pH conditions as for the alkali-metal hydroxide based solutions, moreover, significantly better tolerance to electrolysis-induced effects was obtained. Stable pH of acceptor solutions was achieved as well as an improved EME performance for all analytes over the entire extraction period. Electrolysis was shown to play a significant role in electromembrane extraction (EME) performance. Alkaline acceptors, prepared as 1 – 10 mM CsOH solutions, suffered from electrolytic reactions during EMEs of substituted phenols and their pH values decreased by more than 8 units after 40 min of EMEs at 50 V. As a consequence, serious deterioration of EME performance was observed for weak and medium-strong acidic phenols due to their compromised ionization and their subsequent back-extraction into organic phase and donor solution. Application of acceptor solutions consisting of high concentrations of weak bases (e.g. 500 mM ethanolamine) ensured similar initial pH conditions as for the alkali-metal hydroxide based solutions, moreover, significantly better tolerance to electrolysis-induced effects was obtained. Stable pH of acceptor solutions was achieved as well as an improved EME performance for all analytes over the entire extraction period. (en)
Title	Electrolysis in electromembrane extractions. Effects on extraction performance for substituted phenols Electrolysis in electromembrane extractions. Effects on extraction performance for substituted phenols (en)
skos:prefLabel	Electrolysis in electromembrane extractions. Effects on extraction performance for substituted phenols Electrolysis in electromembrane extractions. Effects on extraction performance for substituted phenols (en)
skos:notation	RIV/68081715:_____/14:00438022!RIV15-GA0-68081715
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-05762S)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Boček, Petr Kubáň, Pavel Šlampová, Andrea
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav analytické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	14144
http://linked.open...ai/riv/idVysledku	RIV/68081715:_____/14:00438022
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	electromembrane extraction; electrolysis; capillary electrophoresis (en)
http://linked.open.../riv/klicoveSlovo	electromembrane extraction capillary electrophoresis electrolysis
http://linked.open...ontrolniKodProRIV	[1D11FB75F967]
http://linked.open...v/mistoKonaniAkce	Brno
http://linked.open...i/riv/mistoVydani	Brno
http://linked.open...i/riv/nazevZdroje	CECE 2014. 11th International Interdisciplinary Meeting on Bioanalysis
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Theory, methodology and development of progressive chemical methods for analysis of trace components and complex samples by capillary electrophoresis.
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Boček, Petr Kubáň, Pavel Šlampová, Andrea
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-10-20 (xsd:date)
number of pages	3 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Ústav analytické chemie AV ČR
https://schema.org/isbn	978-80-904959-2-0

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