Tritium:

Tritium present in an oxide layer could be erased through acid dissolution of the oxide or more gently through isotopic exchange along with normal water or activated hydrogen gas (plasma).  Since diffusion of oxide- or bulk-dissolved tritium back to the surface of a material undergoing decontamination is frequent slow, exchange at an elevated temperature might be advantageous.

While exposed to tritium gas, hydriding metals absorb huge volumes of tritium to form tritide phases which are new chemical compounds, like as UT₃.  The mechanical integrity of the original metallic mass is frequently severely degraded as the inclusions of a brittle, salt-like hydride form inside the mass. Since, of this property and their huge permeability to hydrogen, hydriding metals are not to be used for constructing pipelines and vessels of containment for tritium gas. They have great utility, therefore, in the controlled solidification and storage of tritium gas, transfer, as well as in its pumping, and compression.