Dissolved oxygen (Dissolved Oxygen: DO) is the quantity of oxygen gas dissolved in the water, which comes from the photosynthesis of plants that release oxygen dissolved in the water coming out of the independent and the oxygen from the atmosphere, spreading out into the water because oxygen is a gas that are important in the lives of various creatures, so it must be dissolved oxygen consumption to see if that is appropriate or not, per the existence of creatures in the water.Dissolved oxygen method in common use is the Azide Modification method, because it is a way to find good water soluble oxygen in almost any principle to oxygen is oxidized, along with Mn + 2 to a Mn + 4 under conditions as this can be spotted Mn + 4 oxidation along I-I2 to be independent under conditions, that is, the quantity of acid free I2 were dissolved oxygen is appropriate with mun in the water and initially measured by titration with a standard solution of sodium, sulfate, Chuo thai.Step
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