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PO43-
phosphate
PO33-
phosphite
SO42-
sulfate
SO32-
sulfite
CrO42-
chromate
Cr2O72-
dichromate
NO3-
nitrate
NO2-
nitrite
ClO4-
perchlorate
ClO3-
chlorate
ClO2-
chlorite
ClO-
hypochlorite
CN-
cyanide
OH-
hydroxide
O22-
peroxide
CO32-
carbonate
HCO3-
bicarbonate (hydrogen carbonate)
C2H3O2- (CH3COO-)
acetate
C2O42-
oxalate
NH4+
ammonium
H3O+
hydronium