Comparison of octadecyl-bonded silica and styrene-divinylbenzene copolymer sorbents for trace enrichment purposes fundamental aspects II. Linear chromatographic behaviour of the extracting supports |
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| Authors: | S Bitteur R Rosset |
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| Institution: | 1. Laboratoire de Recherches sur les Ar?mes, Institut National de la Recherche Agronomique, 17 rue Sully, 21000, Dijon, France
3. Laboratoire de Chimie Analytique, Ecole Supérieure de Physique et de Chimie de Paris, 10 rue Vauquelin, 75005, Paris, France
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| Abstract: | Summary Two reversed-phase LC systems were investigated by frontal analysis for the determination of linear chromatographic conditions,
as defined according to the isotherm concept. The Partisil ODS-3 bonded silica and the PRP-1 polystyrene-divinylbenzene resin
were used as stationary phases together withtrans-2-hexen-al as test solute and methanol-water mixtures as mobile phases. Particular attention was paid to the respective influence
of the two main parameters which may cause sorbent overloading, that is, the capacity factor (k′) and the solute concentration
in the mobile phase (Cm). Provided that k′Cm≤10−2 M, linear chromatographic behaviour was observed for both sorbents, the maximum capacities of which were found greater than
1mmolg−1. |
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| Keywords: | Column liquid chromatography Linear isotherms Octadecyl bonded silica Styrene divinylbenzene Frontal analysis |
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