Materials as stationary phase are crucial for the chromatographic analysis of hydrogen gas isotopes. In this study, a Cu–Fe/ZSM-5 zeolite with ion-exchanged Fe3+–Cu2+ is prepared for H2/D2 chromatographic analysis. High-resolution H2/D2 separation is enabled within 4 min and their concentrations are quantitatively analyzed according to peak areas with high accuracy (R2 ≥ 0.999).
