ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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

E-mail: nemoustaf@yahoo.com

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 γ_s^d and -ΔH _a^s 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.

DOI: 10.2478/s11696-009-0014-x

Chemical Papers 63 (3) 371–376 (2009)