Surface area determination of a polystyrene-divinylbenzene chromatographic packing material via ionic amphiphile adsorption from aqueous mobile phases and application of Gouy-Chapman theory.
A method for the determination of the chromatographically accessible area of a reversed-phase column similar to the method of Hägglund and Ståhlberg [J. Chromatogr. A 761 (1997) 13] is applied to a column containing a polystyrene-divinylbenzene resin. Its theoretical basis is Gouy-Chapman theory in combination with an electrostatically modified linear adsorption isotherm. The surface area value determined for the resin, 96 m2/g, is much less than the reported surface area value, 400 m2/g, determined by N2 sorptometry and application of Branauer-Emmett-Teller (BET) theory. The method also provides a value for the number of moles of native anionic sites present on the column.
Niederhauser
Travis L
TL
Department of Chemistry and Biochemistry, Brigham Young University, C100 Benson Science Building, P.O. Box 25700 Provo, UT 84602-5700, USA.
Scoville
David H
DH
Lamb
John D
JD
D000327:Adsorption; D002853:Chromatography, Liquid / Q000295:instrumentation*; D008956:Models, Chemical; D011137:Polystyrenes / Q000737:chemistry*; D020058:Styrene / Q000737:chemistry*; D013816:Thermodynamics
D011137:Polystyrenes; D020058:Styrene