PlutoniumIsotope LabelingRadioactive PollutantsAmericiumNuclear EnergyWater Pollution, RadioactiveIsotopesNuclear ReactorsActinoid Series ElementsRadiation MonitoringNuclear Power PlantsRussiaUraniumNeoplasms, Radiation-InducedNitrogen IsotopesRadiation DosageOxygen IsotopesCarbon IsotopesFukushima Nuclear Accident