title: The timing of krypton-85 controls.
mesh_terms: D000398:Air Pollution, Radioactive / Q000032:analysis*; D004781:Environmental Exposure; D005544:Forecasting; D007726:Krypton / Q000032:analysis*; D009688:Nuclear Reactors; D011868:Radioisotopes / Q000032:analysis*
chemical_list: D011868:Radioisotopes; D007726:Krypton