Groundwater pollution by chromium (Cr), the origin of which is industrial
disposal
Groundwater pollution by chromium (Cr), the origin of which is industrial
disposal, constitutes a real health risk to the people who are using this
water. The chromium-containing anions are CrO4
2–, mostly found in neutral
water, and HCrO4, mostly found in more acidic water. Both are water-soluble.
Usually, Cr concentrations in groundwater are less than 50 mg/L.
However, in concentrations higher than 500 mg/L the dominant ion is
Cr2O7
2–. In basic water Cr(OH)3 is mainly found. It is less water-soluble
compared with the previous three and, apparently, less problematic than
the other three with respect to its toxicity
Groundwater pollution by chromium (Cr), the origin of which is industrialdisposalGroundwater pollution by chromium (Cr), the origin of which is industrialdisposal, constitutes a real health risk to the people who are using thiswater. The chromium-containing anions are CrO42–, mostly found in neutralwater, and HCrO4, mostly found in more acidic water. Both are water-soluble.Usually, Cr concentrations in groundwater are less than 50 mg/L.However, in concentrations higher than 500 mg/L the dominant ion isCr2O72–. In basic water Cr(OH)3 is mainly found. It is less water-solublecompared with the previous three and, apparently, less problematic thanthe other three with respect to its toxicity
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