1 / 7

Chemical and physical properties of water quality

Envirothon 2009. Chemical and physical properties of water quality. pH. pH ranges from 0-14 0 is the most acidic 14 is the most basic/alkaline 7 is neutral Most healthy bodies of water in the U.S. are between 6.5 and 8.5. Certain macros exist in certain pH ranges. alkalinity.

yasir-wheeler
Télécharger la présentation

Chemical and physical properties of water quality

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Envirothon 2009 Chemical and physical properties of water quality

  2. pH • pH ranges from 0-14 • 0 is the most acidic • 14 is the most basic/alkaline • 7 is neutral • Most healthy bodies of water in the U.S. are between 6.5 and 8.5. • Certain macros exist in certain pH ranges

  3. alkalinity • Alkalinity is a measure of how well water can neutralize acids that might get added • Should be between 20-200 mg/L • Less than 20 mg/L means the water cannot easily buffer changes in pH • Acids can be added from acid rain and other environmental pollutants • Determined by the geology (rocks) that the water flows through. • Link to Wilkes alkalinity info

  4. Dissolved oxygen • D.O. is the amount of oxygen dissolved in a body of water • The more O2 that is dissolved, the more that is available to living organisms • Changes with temperature • Cold water holds more O2 than warm water.

  5. Stream velocity • Determined by depth and width of stream • Narrow streams are often faster and colder • Wide streams are slower and warmer • Will have greater velocity if the stream is the same depth all along its route • Certain macros are adapted to live in faster streams while others must live in slow water.

  6. Water temperature • Affects the amount of dissolved oxygen • Cooler water holds more oxygen • Affects rate of photosynthesis • Warmer water = faster photosynthesis • Affects organisms’ sensitivity to pollutants • Warmer water = higher sensitivity • Link to temp website

  7. Turbidity • Measure of how much suspended matter is in the water • Cloudy water has lots of silt, sand, clay and organic material floating • Certain macros must live in clear water (clogs up gills, for example) • Some macros are adapted to live in more turbid water. • Comes from erosion, runoff, algae blooms and sediment disturbances

More Related