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. 2023 Oct 30;11(11):890. doi: 10.3390/toxics11110890

Table 3.

The range of ionic product constants of amorphous ferrous sulfide (FeS or FeS2) in low DO environment at various pH values.

pK (FeS) pK (FeS2)
pH 6.2 9.23–10.05 14.37–15.54
pH 7.5 9.14–9.96 14.21–15.37
pH 9.5 8.89–9.89 13.78–15.25