title: Radioactivity in airborne particulates and precipitation.
mesh_terms: D000398:Air Pollution, Radioactive / Q000032:analysis*; D004583:Electrons; D004781:Environmental Exposure; D009656:North America; D011005:Plutonium / Q000032:analysis; D011834:Radiation Monitoring; D013020:South America
chemical_list: D011005:Plutonium