Because analytes diffuse independently of each other and their diffusivities in the MOF are practically constant at low concentrations, all tested VOCs can be differentiated and identified (Fig. ). Moreover, also in binary mixture measurements, VOC concentrations could be quantified based on the extracted amplitude values ∆' /' ! (Fig. ). As expected for a multi-exponential fit, the quantification accuracy improved for larger diffusivity differences between the two components and amplitude ratios closer to one.