Enviromental Chemistry
9.0 BOD Determination
9.0 BOD Determination
In order to find out BOD, the water sample is first saturated with oxygen. It is then incubated at constant temperature. This allows time for microorganisms in water sample to oxidise pollutants. The remaining amount of dissolved oxygen is determined and BOD is obtained by subtraction BOD measurements takes a few days, so another parameter called the chemical oxygen demand (COD) is sometimes measured.
