Dissolved oxygen

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Terms & Synonyms

Official WHO Definition

Dissolved oxygen is the oxygen that is dissolved in water (UNEP 2000). See biochemical oxygen demand

Other Definitions


Interpretations and Explanations

At an ambient temperature of 20 oC the amount is about 9 mg/L (parts per million). The small amount of oxygen that can be dissolved in water limits its availability to aquatic organisms, and can be readily depleted by wastewater (UNEP 2000).


UNEP (2000) International source book on environmentally sound technologies for wastewater and stormwater management

WHO Lexicon page (translations and examples)

See also

External Resources


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