On the calculation of thermodynamic parameters in sorption calorimetric experiments

The sorption calorimetry method developed by Wadsö and co-workers is one of the most successful methods for studying enthalpy vapor solids gels. A unique feature this a simultaneous measurement water isotherm enthalpy. accuracy measurements in calorimetric experiments can be affected diffusion vapour through injection channel tube potentially small leaks cell. At high activities leads to an apparent drift measured enthalpies towards endothermic values. In work we propose improvement calculation method, that eliminates these effects substantially improves measurements. new successfully tested on previously published data recommended use future experiments.