University of Idaho eTOX - Principles of Environmental Toxicology the study of Toxic Substances in the Environment
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Lecture 16 - Abiotic Transformation in the Environment

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Learning Objectives

  1. Understand the role of solar photons as an energy source for chemical reactions in the environment.
  2. Describe, in general, the dynamics of excited states in producing products and photo-sensitized reactants.
  3. Understand the major abiotic chemical reaction pathways in the environment.
  4. Describe electrophillic, nucleophillic, hydrolysis and redox reactions.
  5. Summarize the basic reactions associated with the formation of the hole in the ozone layer.
  6. Summarize the reactions associated with the formation of acid rock drainage.

Advance Reading

  1.  
  2. The Ozone Hole, 2008 Data
  3. The Ozone Hole

Resources

Keywords

  • Photochemical
  • Photolysis
  • Photoexcitation
  • Quantum yield
  • Energy level
  • Transition
  • Triplet state
  • Singlet state
  • Hydrolysis
  • Oxidant
  • Oxidation
  • Reduction
  • Free radical
  • Photodegradation
  • Redox potential
  • Pourbaix diagram
  • Electrophillic, electrophile
  • Nucleophillic, nucleophile
  • Ozone layer
  • Ozone hole
  • Acid rock drainage
  • Sulfate reducing bacteria
  • Sulfur oxidizing bacteria

Suggested Reading

  1. The Ozone Hole Tour
  2. EPA: The Antarctic Ozone Hole
  3. Mine Waste Technology Program
  4. Photographs of Acid Mine Drainage

Lecture Materials

Slides
PDF Notes
Video
Audio

Lecture Activities

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Discussion

 

Question or Comment? E-mail etox@uidaho.edu

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