Organizations: Environmental Isotopes Variables: dissolved_organic_carbon alkalinity total_cell_concentration Substances: Nitrogen (InChI=1S/N2/c1-2) Sulfate (InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2 Krypton (InChI=1S/Kr) Keywords: noble gases