Is It Possible To Analyze The Absorbance Or Concentration
Yes, it is possible.
For absorption we have experience with kinetic analysis of FTIR data, which are measured as the absorbance vs time at given temperature program. In the Kinetics Neo software it can be done by the same way like the analysis of DSC curves. You can use the project type of DSC (Differential Scanning Calorimetry) for analysis of absorbance data.
The measured concentrations can be analyzed only if this reaction step is independent from other reaction steps and has no overlapping with them. For example, this analysis works if the reaction steps are well-separated or if there is the single-step reaction. In the Kinetics Neo software it can be analyzed by the same way like TGA data. You can use the project type of TG (Thermogravimetry) for analysis of concentration data.