title: Sequential determination of radium-226, radium-228, actinium-227, and thorium isotopes in environmental and process waste samples.
mesh_terms: D000186:Actinium / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis*; D008722:Methods; D011848:Radioactive Pollutants / Q000032:analysis*; D011850:Radioactive Waste / Q000032:analysis*; D011883:Radium / Q000032:analysis*; D013910:Thorium / Q000032:analysis*
chemical_list: D004785:Environmental Pollutants; D011848:Radioactive Pollutants; D011850:Radioactive Waste; D013910:Thorium; D000186:Actinium; D011883:Radium