title: Influence of relative humidity on the properties of examined materials by means of inverse gas chromatography.
abstract: Inverse gas chromatography (IGC) at infinite dilution was applied to evaluate the surface properties of sorbents and the effect of different carrier gas humidity. They were stored in different environmental humidity - 29%, 40%, and 80%. The dispersive components of the surface free energy of the zeolites and perlite were determined by Schulz-Lavielle method, whereas their tendency to undergo specific interactions was estimated basing on the electron donor-acceptor approach presented by Flour and Papirer. Surface parameters were used to monitor the changes of the properties caused by the humidity of the storage environment as well as of RH of carrier gas. The increase of humidity of storage environment caused a decrease of sorbents surface activity and increase the ability to specific interaction.
authors.affiliation: Poznan University of Technology, Institute of Chemical Technology and Engineering, Pl. M. Skłodowskiej-Curie 2, 60-965 Poznan, Poland. Beata.Strzemiecka@put.poznan.pl
authors.forename: Beata
authors.initials: B
authors.lastname: Strzemiecka
authors.forename: Joanna
authors.initials: J
authors.lastname: Kołodziejek
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Kasperkowiak
authors.forename: Adam
authors.initials: A
authors.lastname: Voelkel
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry; D002849:Chromatography, Gas / Q000379:methods*; D005740:Gases / Q000737:chemistry; D006813:Humidity; D012822:Silicon Dioxide / Q000737:chemistry; D013696:Temperature; D017641:Zeolites / Q000737:chemistry
chemical_list: D005740:Gases; C003076:Perlite; D017641:Zeolites; D012822:Silicon Dioxide; D000537:Aluminum Oxide