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. Author manuscript; available in PMC: 2021 Aug 24.
Published in final edited form as: Environ Int. 2020 Nov 29;146:106284. doi: 10.1016/j.envint.2020.106284

Fig. 2.

Fig. 2.

Eh-pH diagram (system Mn-C-S-O-H) with the data for the studied soils in both years. The gray dashed line indicates the Fe2+ stability field on the system Fe-C-O-H. The Eh-pH diagram was adapted from Brookins (1988).