Isotope LabelingTritiumIsotopesOxygen IsotopesNitrogen IsotopesCarbon IsotopesFood Contamination, RadioactiveDeuteriumRadioisotope Dilution TechniqueTamaricaceaeZinc IsotopesSulfur IsotopesRadioactive PollutantsIron IsotopesHydrologyWater Pollutants, RadioactiveBorohydridesWater Pollution, RadioactiveKineticsStrontium IsotopesNorepinephrineNuclear Power PlantsCarbon RadioisotopesVas DeferensMass SpectrometrySoil Pollutants, RadioactiveScintillation CountingAutoradiography