1 / 8

5.2 Detection and monitoring of pollution

5.2 Detection and monitoring of pollution. D irect methods of monitoring pollution. Air pollution - Measure the acidity of rain water to determine pH Measure CO 2 , CO, or NO x levels in the atmosphere using a gas sensor Measure particulate matter suspended in the atmosphere .

strom
Download Presentation

5.2 Detection and monitoring of pollution

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. 5.2 Detection and monitoring of pollution

  2. Direct methods of monitoring pollution • Air pollution - • Measure the acidity of rain water to determine pH • Measure CO2, CO, or NOx levels in the atmosphere using a gas sensor • Measure particulate matter suspended in the atmosphere

  3. Direct methods of monitoring pollution • Soil pollution • Test for nitrates and phosphates (Using LaMotte test kits)

  4. Direct methods of monitoring pollution • Water pollution • nitrate and phosphate tests • fecal coliform tests • tests for heavy metals (Hg, Pb, As)

  5. BOD (Biochemical Oxygen Demand) • BOD is the amount of oxygen required to support respiration by organisms living in a water sample. • high BOD indicates there are many organisms using oxygen for respiration • low BOD indicates relatively few organisms needing oxygen for respiration • high BOD = low DO levels = high pollutant levels, especially nitrate & phosphate • low BOD = high DO levels = low pollutant levels

  6. Indirect Method: The Biotic Index • A Biotic Index uses the presence or absence of key organisms to indicate the relative level of pollution in a stream. • Indirect method of measuring pollution • Advantage: Easy to use, especially for moderately or heavily polluted sites. • Disadvantages: not specific enough, doesn’t fully account for habitat quality

  7. Pollution Intolerant Semi-Pollution Tolerant Pollution Tolerant

  8. Indicator Species • Species that are present either only in polluted areas or only in unpolluted areas. • Lichens – Not present in air pollution • Rat-tailed maggot and sludge worms – Found only in polluted water • Gammarus - small crustaceans that are not found in high levels of salinity.

More Related