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Metal speciation in natural waters is of increasing interest and importance because toxicity, bioavailability, environmental mobility, biogeochemical behavior, and potential risk in general are strongly dependent on the chemical species of metals.etal speciation in natural waters is of increasing interest and importance because toxicity, bioavailability, environmental mobility, biogeochemical behavior, and potential risk in general are strongly dependent on the chemical species of metals.
At high concentration (> .3ppm ) iron will cause the water to have a metallic taste and metallic odor. Water treatment for iron will depend on the form of the iron and the other contaminants found in the water. Ferrous iron â Ferrous iron is often referred to as clear-water iron. This form of iron is dissolved in the water.