Acetate
CH3COO-
Carbonate
CO3-2
Hydrogen carbonate
HCO3-
Cyanide
CN-
Perchlorate
ClO4-
Chromate
CrO4-2
Ammonium
NH4+
Nitrite
NO2-
Nitrate
NO3-
Hydroxide
OH-
Phosphate
PO4-3
Hydrogen phosphate
HPO4-2
Sulfate
SO4-2
Sulfite
SO3-2
Thiocyanate
SCN-
Hydronium
H3O+