Question
Biochemical Oxygen Demand (BOD)
Answer :
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Biochemical Oxygen Demand (BOD) is a key parameter in environmental chemistry used to assess the amount of biodegradable organic matter present in water. It measures the quantity of dissolved oxygen required by microorganisms to decompose the organic material in a water sample over a specified period, typically five days at 20°C, known as BOD₅. High BOD values indicate a high concentration of organic pollutants, suggesting that the water body is under significant organic load, which can lead to oxygen depletion and adversely affect aquatic life.
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