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Humin

Humic substances that remain insoluble in both strong base solutions and in water.

Humins can effectively exchange cations with water and may accumulate quantities of metals. Lignite coal, for example, is largely a humin and humic-acid material, which, through ion exchange, tends to remove some metal ions from water.

See Also: Chelation Chelating Agent Organic Iron Trihalomethanes (THMs) Humic Acid Humic Substances Fulvic Acid Tannin Chelation Chelating Agent Organic Iron Trihalomethanes (THMs) Humic Acid Fulvic Acid Tannin