Dissolved
Dissolved Oxygen (DO)
Dissolved Oxygen (pronunciation: dih-zolved ox-i-gen) refers to the level of free, non-compound oxygen present in water or other liquids. It is an important parameter in assessing water quality because of its influence on the organisms living within a body of water.
Etymology
The term "Dissolved Oxygen" is derived from the fact that it refers to the oxygen that is "dissolved" or mixed into the water or liquid, much like salt might dissolve in water.
Related Terms
- Biochemical Oxygen Demand (BOD): The amount of oxygen required by aerobic microorganisms to decompose the organic matter in a sample of water.
- Chemical Oxygen Demand (COD): The total measurement of all chemicals (organics & in-organics) in the water that can oxidize.
- Water Quality: The physical, chemical and biological characteristics of water. It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose.
- Oxygen Saturation: A relative measure of the amount of oxygen that is dissolved or carried in a given medium. It can be measured with a dissolved oxygen probe such as an oxygen sensor or an optode in liquid media, usually water.
See Also
External links
- Medical encyclopedia article on Dissolved
- Wikipedia's article - Dissolved
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