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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Appl Geochem. 2019 Sep 1;108:1–16. doi: 10.1016/j.apgeochem.2019.104388

Fig. 4.

Fig. 4.

Concentration versus pH diagrams showing a) Cd speciation from pH 4 to 7 for the composition Cd (10−6.4 M), Cl (10−3 M), ΣCO2 (10−3 M), and SO4 (10−3 M). b) Otavite solubility as a function of pH and Σ CO2 from 10−3 to 10−2 M. C) Concentration versus dissolved sulfide diagram showing the solubility of CdS at pH 6. Reference concentrations for drinking water standards are shown (3 to 5 μg/L).