… the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these …
Explanatory notes
… compounds 2844.44 ‑ - Radioactive residues 2844.50 ‑ Spent (irradiated) fuel elements (cartridges) of nuclear reactors … 32, sulphur 35, potassium 42, calcium 45, chromium 51, iron 59, cobalt 60, krypton 85, strontium 90, yttrium 90, … iodine 131 and 132, xenon 133, caesium 137, thulium 170, iridium 192, gold 198, and polonium 210. Radioactive …