title: Cosmogenic and artificial Na-22 levels in rainwater.
mesh_terms: D000398:Air Pollution, Radioactive / Q000032:analysis*; D005107:Explosions; D007558:Italy; D011851:Radioactivity; D012494:Sampling Studies; D012975:Sodium Isotopes / Q000032:analysis*; D013051:Spectrometry, Gamma; D013223:Statistics as Topic; D014878:Water Pollution, Radioactive / Q000032:analysis*; D014887:Weather
chemical_list: D012975:Sodium Isotopes