Explain chemical oxygen demand[COD]...
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Chemical Oxygen Demand also known by COD. It means the amount of chemicals dissolved per 100 ml of water . If the concentration of chemicals is more then its effects can be adverse and not be treated as a potable water.
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▶Chemical oxygen demand { COD } analysis is a measurement of the oxygen-depletion capacity of a water sample contaminated with original waste matter. Specifically , it measures the equivalent amount of oxygen required to chemically oxidize organic compounds in water.
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