Arrhenius plots of the multilayer H₂S TPD curves used to derive the H₂S-H₂S binding energy. The experimental data are shown in gray, and the linear fits to the plots, performed simultaneously for the five ice thicknesses, with the dashed blue lines. The shaded blue region indicates the 1σ uncertainty. The fit is performed for the temperature range where the original curve follows an exponential trend (see Sect. 3.1.1).