dissolved oxygen
Water's breathable gas
Dissolved oxygen is oxygen gas held in water, measured as a key indicator of water quality.
Fish and aquatic organisms depend on it for respiration.
Levels vary with temperature, salinity, and turbulence—cold, fast-moving streams typically have more dissolved oxygen than warm, stagnant ponds.
The dissolved oxygen levels dropped dangerously low during the algae bloom.
- parts per millionRatio expressing tiny concentrations
- water testingExamining liquid for contaminants
- turbidityCloudiness from suspended particles
- water qualityCondition of H2O supply
- pH levelsMeasure of hydrogen ions
decomposition · plankton · algae · aeration · salinity · photosynthesis · fish · thermal pollution · saturation point · redox reactions · gas exchange · oxidation · temperature · aquatic plants · pond · aquarium · ecosystem · meter
dissolved oxygenanoxia
Absence of oxygen supply
oxygen depletion · hypoxia · anaerobic conditions · deoxygenation · dead zone
dissolved oxygenfree oxygen