Variables: dissolved_organic_carbon total_cell_concentration concentration Keywords: groundwater Systems: groundwater Substances: Sulfate (InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2 Argon (InChI=1S/Ar) Krypton (InChI=1S/Kr) Nitrate (InChI=1S/NO3/c2-1(3)4/q-1)