Evaluation of the applicability of Jaentti's method to volumetric sorption measurements

Jaentti published in 1970 a method to obtain values of the sorption parameters at an early stage of gravimetric sorption measurements. In the present paper we apply that method to volumetric sorption measurements to discuss its applicability. A method is presented to cope with inaccuracies when using Jaentti's method. This will be of special importance for volumetric measurements where accuracy plays a major part. In the paper a second order regression method is used. We use a computer simulation as well as exptl. data on desorption of nitrogen from a silica aerogel at 77 K. [on SciFinder (R)]