21 Water Quality Parameters 11

21 Water Quality Parameters 11 - Oxygen content of water is

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Gases Also Dissolve in Water Gas Gases dissolution
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Middle Ages Industrial Revolution removed about 118 billion metric tons Of CO 2 from the atmosphere. Between 1800 and 1994, the ocean 48 percent of all fossil fuel emissions 380 ppm Solubility = 1.69 g/L CO 2
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Oxygen is also water Soluble O 2 O 2 In natural systems, oxygen diffusing from the atmosphere and from plant photosynthesis dissolves in water Diffusion of O 2 from the atmosphere is generally slow
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Reduced oxygen levels Oxygen is being used faster than it can be replaced
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Unformatted text preview: Oxygen content of water is temperature-dependent Example: Eutrophication Photosynthetic life O 2 bacteria Nutrient Additions Nutrient addition increases primary productivity (algae) Sunlight is limited at greater depth Photoautotrophs die and become food for aerobic heterotrophs Aerobic autotrophs consume oxygen Oxygen content in water is reduced If oxygen is reduced sufficiently, aerobic microbes cannot survive, and anaerobic microbes take over...
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21 Water Quality Parameters 11 - Oxygen content of water is

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