ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Inverse gas chromatographic characterization of Porapak Q as an extractant of pollutants from aqueous media
Nagy E. Moustafa and Doaa S. El-Desouki
Egyptian Petroleum Research Institut, 11727 Nasr City, Cairo, Egypt
Received: 18 June 2008 Revised: 29 September 2008 Accepted: 9 October 2008
Abstract: The surface of Porapak Q was characterized by inverse gas chromatography (IGC) carried out by the determination of dispersive
and specific adsorption components of Porapak Q surface, calculating γsd and -ΔH
as parameters, respectively. An interpretation was given based on the chemical structure of Porapak Q. The obtained results
were confirmed through the surface Lewis acidity and basicity constants, K
a and K
b, respectively, correlating well with the determined thermodynamic parameters.
Keywords: surface characteristics - Porapak Q - inverse gas chromatography - solid-phase extraction
Full paper is available at www.springerlink.com.
Chemical Papers 63 (3) 371–376 (2009)