Collect. Czech. Chem. Commun. 1989, 54, 2974-2984

Elimination of dead-volume contributions to moments of chromatographic peaks

Helena Davidová and Petr Schneider

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


two methods for correction of moments of peaks from packed columns were applied to experimental responses of columns packed with porous γ-aluminia in the shape of Rasching rings: 1. substraction of moments for columns of two lengths and 2. application of dead volume corrections obtained by independent measurements. It appears that both methods give identical results. An advantage of the second methods lies in increased accuracy and decreased amount of necessary measurements.