About: Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Gas-liquid partitioning coefficients (K_GL) were measured for halogenated volatile organic compounds (VOCs), namely 1-chlorobutane, methoxyflurane, pentafluoropropan-1-ol, heptafluorobutan-1-ol, alpha,alpha,alpha-trifluorotoluene, and toluene in aqueous solutions of natural alpha-, beta-, and gamma-cyclodextrins (CDs) at temperatures from (273.35 to 326.35) K employing the techniques of headspace gas chromatography and inert gas stripping. The binding constants of the 1:1 inclusion complex formation between the VOCs and CDs were evaluated from the depression of the VOCs volatility as a function of CD concentration. The host?guest size matching and the hydrophobic interaction concept were used to rationalize the observed widely different affinity of the VOC-CD pairs to form the inclusion complex. The enthalpic and entropic component of the standard Gibbs free energy of complex formation as derived from the temperature dependence of the binding constant indicate the thermodynamic origin of the binding to vary greatly among the systems studied, but follow the global enthalpy?entropy compensation relationships reported previously in the literature. Gas-liquid partitioning coefficients (K_GL) were measured for halogenated volatile organic compounds (VOCs), namely 1-chlorobutane, methoxyflurane, pentafluoropropan-1-ol, heptafluorobutan-1-ol, alpha,alpha,alpha-trifluorotoluene, and toluene in aqueous solutions of natural alpha-, beta-, and gamma-cyclodextrins (CDs) at temperatures from (273.35 to 326.35) K employing the techniques of headspace gas chromatography and inert gas stripping. The binding constants of the 1:1 inclusion complex formation between the VOCs and CDs were evaluated from the depression of the VOCs volatility as a function of CD concentration. The host?guest size matching and the hydrophobic interaction concept were used to rationalize the observed widely different affinity of the VOC-CD pairs to form the inclusion complex. The enthalpic and entropic component of the standard Gibbs free energy of complex formation as derived from the temperature dependence of the binding constant indicate the thermodynamic origin of the binding to vary greatly among the systems studied, but follow the global enthalpy?entropy compensation relationships reported previously in the literature. (en)
Title	Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions (en)
skos:prefLabel	Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions (en)
skos:notation	RIV/60461373:22340/11:43889946!RIV12-MSM-22340___
http://linked.open...avai/predkladatel	Fakulta chemicko-inženýrská
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6046137307)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Dohnal, Vladimír Baránková, Eva Ondo, Daniel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	200820
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/11:43889946
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Thermodynamic quantities of binding; Inclusion complex stability; Cyclodextrin; Water; VOC; Gas-liquid partitioning (en)
http://linked.open.../riv/klicoveSlovo	Cyclodextrin Gas-liquid partitioning Inclusion complex stability Thermodynamic quantities of binding VOC Water
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[CE97C81A7F80]
http://linked.open...i/riv/nazevZdroje	Journal of Chemical Thermodynamics
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Dohnal, Vladimír Baránková, Eva Ondo, Daniel
http://linked.open...ain/vavai/riv/wos	000291522900020
http://linked.open...n/vavai/riv/zamer	Physico-chemical methods of analysis and characterization of chemical systems and biosystems
issn	0021-9614
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.jct.2011.03.017
http://localhost/t...ganizacniJednotka	22340
is http://linked.open...avai/riv/vysledek of	Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions Gas-liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions

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